A lifted blue-and-white 1984–88 Ford Bronco II with a winch bumper, off-road lights and mud-terrain tires
FORD BRONCO II · RANGER-BASED COMPACT SUV · 1984–1990

Ford Bronco II

94 IN WHEELBASE2.8 / 2.9 COLOGNE V6DANA 28 / 35 TTB FRONTFORD 7.5 REAR2WD FROM 1986–87

“Ford put a roof on the new Ranger, cut the wheelbase to 94 inches and sold more than 760,000 of the result. It is light, narrow, simple and genuinely good on a tight trail, and it carries the heaviest safety file of any small 4x4 of its era. Buy one with your eyes open and drive it like what it is.”

PART 01

Overview

Where it came from, why it matters, and how it changed year to year.

The story

In March 1983 Ford introduced a second Bronco that had almost nothing to do with the first two. The Bronco II was the new Ranger compact pickup with a short enclosed wagon body where the bed would be, built alongside it at Louisville Assembly from January 1983 and sold as a 1984 model. It was roughly the size of the early Bronco, nearly a foot shorter than Chevrolet's new S-10 Blazer, and it arrived the same year as the Jeep Cherokee XJ and the first 4Runner. MotorTrend liked it so much it decided XLT stood for "Xcellent Little Truck". Then the rollover numbers came in.

1984–85: A RANGER WITH A ROOF

Under the skin it was all Ranger: a ladder frame cut to a 94-inch wheelbase, Ford's Twin Traction Beam front suspension with a Dana 28 differential, coil springs and radius arms, and a leaf-sprung Ford 7.5-inch axle at the back. Wikipedia notes that nearly the whole driver's compartment came straight from the pickup. Every early truck was four-wheel drive, with a Borg-Warner 1350 transfer case, and power came from the German-built 2.8-liter Cologne V6: carbureted, 115 hp and 150 lb-ft. A Toyo Kogyo four-speed or a C5 three-speed automatic sent it rearward.

Ford sold it as a lifestyle object from the start. Its own marketing called it a vehicle for "men, single people, or young couples", the sort of John Wayne truck that made buyers feel they could conquer anything. The 1984 range already included an Eddie Bauer edition, which The Ranger Station calls the first Ford to wear the outdoor brand: two-tone paint over Light Desert Tan, a tan interior with pine-tree stitching, and Eddie Bauer luggage shipped to the buyer's house. For 1985 the four-speed became a five-speed, the A4LD four-speed automatic replaced the C5 from November 1984 builds, and power windows and locks finally arrived.

1986–90: FUEL INJECTION, 2WD AND A NEW FACE

For 1986 the 2.8 gave way to a fuel-injected 2.9-liter Cologne V6 with 140 hp and 170 lb-ft, and the push-button Touch-Drive electric transfer case appeared late in the year. A Mitsubishi 2.3-liter turbodiesel was listed as well; The Ranger Station says it was offered for 1986 only, Wikipedia says 1986 and 1987, and everyone agrees almost nobody bought it. Rear-wheel drive arrived too, though NHTSA's sales figures show the first 2WD trucks counted in the 1987 model year. Rear-wheel ABS became standard for 1987, and the XL Sport, with a brush guard, fog lamps and a tubular rear bumper, followed for 1988.

The 1989 facelift matched the restyled Ranger: new hood, fenders and front bumper, a new dashboard with the Touch-Drive buttons moved into it, and 3.6 more inches of overall length on the same wheelbase. The front-door vent windows disappeared, the 2.9 got stronger "89TM" cylinder heads, and Eddie Bauer trucks switched to Light Sandalwood lower paint. The last trucks brought the BW1354 transfer case on electric-shift models and, after November 1989, a Dana 35 front axle in place of the Dana 28. Production ended in early 1990. The Bronco II had been built for barely seven model years, while the full-size Bronco carried on until 1996.

THE ROLLOVER RECORD

The trouble started before production. Automobile Magazine reports that Ford engineers calculated a stability index (a figure based on track width and center-of-gravity height) significantly lower than the S-10 Blazer's and slightly lower than the Jeep CJ-7's, that some test maneuvers were dropped for the drivers' safety, and that proposals to widen the track or lower the truck were mostly vetoed because they would have delayed the launch. In the summer of 1982 Ford's Office of General Counsel collected more than 100 documents on the truck's handling, 53 of which later turned out to be missing.

In March 1989 NHTSA opened an engineering analysis of 1984–89 Bronco IIs after its study of the Suzuki Samurai. That study counted 43 fatal single-vehicle Bronco II rollovers, or 19 per 100,000 vehicles, against 6 for the Samurai, 6 for the S-10 Blazer and Jimmy, and 2.5 for the Cherokee. Two months later Consumer Reports, published by Consumers Union, told readers to avoid the truck after it failed the magazine's emergency-handling tests. NHTSA closed its investigation on October 31, 1990, without a recall. Using its preferred measure, first-event single-vehicle rollovers per single-vehicle crash, the agency found the Bronco II similar to other small SUVs.

The argument never went away. NHTSA turned down a 1997 petition to reopen the case in May 1999. It repeated that the truck's rollover rate did not stand out, but added that its crashworthiness in rollovers was "a cause for concern", with a much higher share of occupants killed in first-event rollovers than in most peer vehicles. By 1997 about 260 people had died in Bronco II rollovers. Ford had paid $113 million to settle injury and death suits, and it offered a class settlement covering about 658,000 owners: new warning labels and manuals, $100 toward worn suspension parts and up to $200 for certain modifications. Ford has always maintained that driving and modifications, not design, caused the rollovers.

THE EXPLORER, AND THE TRUCKS THAT SURVIVED

Ford replaced the Bronco II with the Ranger-based Explorer, introduced in March 1990 as a 1991 model with a 160-hp 4.0 V6 and the four doors the Bronco II never had. Even the two-door Explorer Sport was about a foot longer. According to PBS Frontline, Ford engineers ran an Explorer prototype through the same test the Bronco II had failed and saw it lift its wheels too. Thirty-odd years on, the surviving Bronco IIs are cheap, light and narrow, and owners build them around Explorer parts: Dana 35 front axles, 8.8 rear axles and 4.0 engines. Driven sensibly, kept low and treated as the narrow-track short-wheelbase truck it is, a Bronco II will go places a modern SUV won't fit.

SIDEBAR · THE 2WD WITH A TRANSFER CASE

The BW1359 "dummy" case

When Ford added a rear-drive Bronco II, it didn't redesign the drivetrain. Most 2WD trucks got the four-wheel-drive transmission, the same crossmember and rear driveshaft, and a Borg-Warner 1359 that looks like a transfer case but drives nothing. It passes power straight through to the rear axle and has a permanent seal where the front output would be. The Ranger Station's explanation is assembly-line efficiency: the short wheelbase made unique 2WD driveshafts and exhaust routing more trouble than a pass-through box.

Late in 1990 production some 2WD trucks finally got a true 2WD transmission with a bolt-on flange adapter instead. Owners note that some 1359s are dry and others contain ATF. The case is also why converting a 2WD Bronco II to 4WD is a popular, well-documented project. It only matters for safety because the 2WD truck had the worse record: Automobile Magazine cites IIHS figures of 3.78 rollover deaths per 10,000 rear-drive Bronco IIs in 1986–90, against 1.74 for the 4x4.

Year by year

What changed, model year by model year. Sweet spot Beware

  1. 1983Production begins at Louisville in January and the Bronco II is introduced in March as a 1984 model. Four-wheel drive only, carbureted 2.8 Cologne V6 (115 hp), TK4 four-speed or C5 automatic, Dana 28 TTB, 7.5 rear.
  2. 1985Five-speed manuals (TK5, FM145); the A4LD four-speed automatic replaces the C5 from November 1984 builds; power window and lock group; side glass changes from glued to bolted-in late in the year. Last year of the XLS.
  3. 1986Fuel-injected 2.9 Cologne V6 (140 hp); Mitsubishi 2.3 turbodiesel offered; Touch-Drive electric-shift transfer case late in the year. Ford records show the first 2WD trucks.
  4. 1987Rear-wheel ABS standard; 2WD sales begin in earnest (22,286 sold per NHTSA). 1985–87 A4LDs are the least reliable.
  5. 1988Sequential fuel injection; FM146 and Mazda M5OD five-speeds; dual-solenoid A4LD from mid-year; XL Sport arrives. Last year of the front-door vent windows and the early body.Sweet spot
  6. 1989Facelift to match the Ranger: new hood, fenders, bumper and dashboard, 161.9 in long. Improved 89TM 2.9 heads cure most head cracking. Ball joints move from the TTB beam to the knuckle. XLT Plus package.Sweet spot
  7. 1990Final year. BW1354 on electric-shift trucks; Dana 35 TTB on 4x4s built from November 1989; some 2WD trucks get a true 2WD transmission. Production ends in early 1990 and the Explorer replaces it for 1991.Sweet spot
PART 02

Specs & capability

How it’s built, what it can do, and what fits under it.

How it’s built

The Bronco II is a first-generation Ranger under a short wagon body: a ladder frame with a 94-inch wheelbase and a 56.9-inch track, Twin Traction Beam independent front suspension on coil springs and radius arms, and leaf springs over a solid Ford 7.5-inch rear axle. Almost everything mechanical is shared with the 1983–92 Ranger and much of it with the 1991–94 Explorer, which is why the parts supply is good and the swap culture is strong.

CHASSISLadder frame · 94 in wheelbase · 56.9 in trackShortened Ranger frame. Length grew from 158.3 in to 161.9 in with the 1989 facelift.
FRONT SUSPENSIONTwin Traction Beam, coil springs, radius armsTwo pivoting beams with a U-joint in the middle give independent travel. Camber changes as the suspension moves, so lifts need geometry correction.
FRONT AXLEDana 28 TTB (1984–89) · Dana 35 TTB (built after Nov 1989)Dana 28: 23-spline shafts, 6.625 in ring gear, rated for about 31 in tires. Dana 35: 27-spline, 7.56 in ring gear. In 1989 the ball joints moved from the beam to the knuckle.
REAR AXLEFord 7.5 in, 28-spline, overslung leaf springsBronco II shafts are about 1-5/8 in wider than Ranger shafts on the passenger side. Ratios 3.45, 3.73 or 4.10; limited slip optional.
TRANSFER CASEBW1350 (to 1990) · BW1354 (1990 electric shift) · BW1359 dummy (2WD)Part-time, chain-drive, aluminum, 2.48:1 low range. Touch-Drive push buttons from late 1986, in the overhead console until 1988 and in the dash from 1989.
ENGINES2.8 Cologne V6 (1984–85) · 2.9 Cologne V6 EFI (1986–90) · 2.3 Mitsubishi turbodiesel (1986)2.8: 115 hp, carbureted, gear-driven cam. 2.9: 140 hp, chain-driven cam; bank-fire injection in 1986–87, sequential from 1988.

Variants & engines

YEARSPLATFORMENGINEOUTPUTWORTH KNOWING
1984Launch · 4WD only2.8 Cologne V6 (carbureted)115 hp · 150 lb-ftTK4 four-speed or C5 three-speed automatic. BW1350 manual-shift transfer case, Dana 28 TTB, 7.5 rear. Standard, XLS, XLT and Eddie Bauer trims.
19854WD only2.8 Cologne V6115 hp · 150 lb-ftFive-speed manuals (TK5, FM145). A4LD four-speed automatic from November 1984 builds. Power window and lock group. Last XLS.
19864WD (first 2WD per Ford production records)2.9 Cologne V6 EFI · 2.3 Mitsubishi turbodiesel I4140 hp · 170 lb-ft (2.9)Fuel injection, 58 mm throttle body and EGR on 1986–87 2.9s. Touch-Drive electric shift arrives late in the year. The diesel sold poorly.
1987–19882WD and 4WD2.9 Cologne V6 EFI140 hp · 170 lb-ftRear ABS standard from 1987. 1988: sequential injection, FM146 and Mazda M5OD five-speeds, dual-solenoid A4LD from mid-year, XL Sport trim.
1989–1990Facelift · 2WD and 4WD2.9 Cologne V6 EFI140 hp · 170 lb-ftNew nose and dash, 161.9 in long, no vent windows, improved 89TM heads. XLT Plus package. 1990: BW1354 on electric-shift trucks, Dana 35 TTB after November 1989.

Capability numbers

Wheelbase94.0 in (2,388 mm)
Length158.3 in (1984–88) · 161.9 in (1989–90)
Width68.0 in (1,727 mm)
Height68.2 in (1984–88) · 69.9 in (1989–90)Wikipedia infobox figures
Track56.9 in front and rearNHTSA petition analysis, 1999
Fuel tank23 US gal (87 L)
Seating4
Cargo volume23.8 cu ft behind the rear seat · 57 cu ft maximum
Low range2.48:1 (BW1350 and BW1354)
Fuel economyEPA 15–17 city / 17–22 hwyFactory-era ratings: a 1984 4x4 with the 2.8 and C5 automatic was 15/17; the best was a 1986–88 2WD five-speed 2.9 at 17/22

Wheels & tires

FACTORY TIRES
205/75R15 (≈ 27.1 in tall), the factory size per The Ranger Station
Bolt pattern5x114.3 (5x4.5")
OffsetListed fitments 6Jx15 and 7Jx15, ET12
Center bore70.5 mm
Lug thread1/2"-20 UNF
LIFTBIGGEST TIREWHAT IT TAKES
Stock31x10.50R15Shown on The Ranger Station with no lift and trimmed fenders. Its rule of thumb pairs 31s with about 1.5 in of lift plus trimming. The Dana 28 front axle is rated for about 31 in tires.
1.5 in32x11.50R15Fits with the bottom rear corner of the front fender trimmed.
4 in31–32 in (33 in with cut-out flares or a 3 in body lift)The Ranger Station's chart: 31s fit, 32s need trimming, and 33s need cut-out flares or a 3 in body lift.
6 in33 in (35 in with a 2–3 in body lift and cut-out flares)35s also show up on 3–5.5 in lifts with body lifts and cut-out flares, and on solid-axle swaps. At this size, plan for a Dana 35 or a solid axle, an 8.8 rear and regearing.

Forum consensus, not a guarantee: wheel offset, tire brand and suspension wear all change clearance. Confirm before you buy.

Production & special editions

All Bronco IIs were built at Louisville Assembly in Kentucky. Ford's own production records are patchy, so the cleanest figures are NHTSA's US sales by model year.

1984144,061 (4x4 only)
198598,153 (4x4 only)
1986109,846 (4x4 only)
1987111,104 (88,818 4x4 · 22,286 4x2)
1988147,725 (109,524 4x4 · 38,201 4x2)
198997,191 (67,356 4x4 · 29,835 4x2)
199054,896 (38,451 4x4 · 16,445 4x2)
Total US sales762,976
XLS1984–1985Blacked-out trim, tri-color lower-body tape stripes, sport steering wheel; optional reclining rear bucket seats
Eddie Bauer1984–1990Two-tone paint, tan interior, captain's chairs, Eddie Bauer luggage package on early trucks
XL Sport1988–1990Brush guard, fog lamps, black tubular rear bumper, body spats and graphics
XLT Plus1989–1990A fully loaded XLT package with deluxe two-tone paint, luggage rack and outside spare carrier
Sherrod convertible and Bronco II Plus—Rare outside conversions, not factory trims, documented by The Ranger Station

1984–88 Eddie Bauer colors were Dark Canyon Red, Dark Shadow Blue, Dark Walnut or Dark Spruce over Light Desert Tan; 1989–90 trucks paired Raven Black, Scarlet Red, Cabernet Red, Hunter Green, Twilight Blue or Sandalwood with Light Sandalwood.

PART 03

Buying one

What to pay, what to check, and how to tell a good one from a clone.

What they cost

Bronco IIs are still cheap. Clean, original Eddie Bauers and XLT 4x4 five-speeds bring the most, and very-low-mileage survivors bring far more.

Tired or engine-swapped driver$5k–9k
Good original XLT or Eddie Bauer 4x4$9k–16k
Exceptional low-mileage survivor$28.5k+

Based on 24 recent Bring a Trailer results (August 2024 to October 2026): sold prices ran from $5,000 (a 302-swapped 1989 XLT) to $15,750 for most trucks, with a 9,000-mile 1989 Eddie Bauer at $28,550. BaT lists 69 Bronco II auctions in all. Prices move; checked October 2026. See live listings below.

What to check before you buy

  1. 01
    Look for a cracked 2.9 head before anything elseThe Ranger Station says early North American 2.9 heads lost material around the valve guides and rocker pedestals, and some cracked after a single overheat. Symptoms are white exhaust smoke when warm, clean spark plugs, low compression on a cylinder, and milky residue on the oil cap or dipstick (check it warm, since condensation looks similar). Rectangular rocker pedestals and an 89TM casting mean the improved heads have been fitted.
  2. 02
    Listen to the valve trainOn the 2.9, oil reaches the lifters, rocker shaft and rockers through the two center cam bearings, so slight bearing wear can starve the top end. Loud clatter, especially after a long highway run, warrants an oil-pressure check. The Ranger Station's figures are about 20 psi at warm idle and 55 psi at 2,000 rpm. Coolant in the oil from a cracked head quickly wipes out those bearings.
  3. 03
    Hunt for water leaks and cowl rustThe cowl drains on 1984–88 trucks clog with leaves and rust through, putting water on the front carpet and in the glove box. The 1989–90 trucks got a mesh cowl. Every year leaks at the A-pillar and roof seam, the rear drip rail, the side-glass seals and behind the top of the hatch. A passenger floor that is always wet, rain or not, is usually the heater core.
  4. 04
    Judge the A4LD, especially on 1985–87 trucksThe Ranger Station rates 1985–87 A4LDs as the weakest, with reliability improving after the dual-solenoid change in mid-1988. Heat is the main killer. Look for dark or burnt fluid, slow or missing overdrive, and hard or erratic shifts, which can mean a ruptured vacuum modulator. Fluid in the modulator's vacuum line confirms it, and so does white exhaust smoke from ATF being drawn into the engine.
  5. 05
    Read the door sticker and the front axleThe certification label on the driver's door post carries axle and transmission codes, so you can confirm the ratio, a limited-slip rear and the original gearbox. Dana 28 axles have 12 cover bolts and date codes starting with E; the Dana 35 has a 10-bolt cover and F codes. Only 1990 trucks built after November 1989 left the factory with a Dana 35.
  6. 06
    Check the TTB and the hubsUneven tire wear points to tired beam pivot bushings, ball joints or radius-arm bushings, or a lift without camber correction. The Ranger Station advises checking the beam pivot bushings whenever the front end is apart. The factory automatic locking hubs become unreliable with age, and owners usually replace them with manual hubs.
  7. 07
    Is it really a 4x4?A 2WD Bronco II often has what looks like a transfer case, the BW1359 pass-through, so look for a front driveshaft, a front differential and a shifter or Touch-Drive buttons. Also look for 2WD-to-4WD conversions, which are common. Check the quality of the swapped axle, the driveshafts and the transfer-case linkage.
  8. 08
    Run the recalls and question the modificationsNHTSA lists campaigns for locking-hub cams (1984), seat-belt anchors (1984), fuel lines and an EEC harness short (1986), handling-warning stickers on the sun visor (1987) and missing front wheel-bearing keys (1989). Ford blamed many rollovers on unsafe modifications. Treat a tall lift on a narrow 94-inch truck with suspicion and ask how it was engineered.

Spotting the real thing

Nearly every Bronco II has been modified or had parts swapped from Rangers and Explorers, so identification is mostly about which drivetrain is fitted now and which it left the factory with.

  1. ID
    Door-post label codesThe Federal Safety Compliance Certification label on the driver's door post lists the axle code (ratio and limited slip) and the TRANS code. Ranger Station manual-transmission codes include X (TK4), 5 (TK5), D (FM145/FM146) and M (M5OD); automatics are W (C5) and T (A4LD).
  2. ID
    Front axleA Dana 28 TTB has a 12-bolt cover, 23-spline shafts and a date code beginning with E. A Dana 35 has a 10-bolt cover, 27-spline shafts and an F code. Only 1990 trucks built from November 1989 came with a Dana 35, so on anything earlier it's a swap.
  3. ID
    2WD or 4WDA 2WD truck usually still has a transfer-case-shaped BW1359 behind a 4WD-style transmission, but no front driveshaft or front differential. Late 1990 2WD trucks may have a true 2WD transmission with a bolt-on flange adapter instead.
  4. ID
    Engine and headsThe 2.8 (1984–85) is carbureted with a gear-driven cam. The 2.9 (1986–90) has an upper intake reading "2.9L Electronic Fuel Injection". Improved heads have rectangular rocker pedestals and 89TM castings; early heads have oval pedestals.
  5. ID
    Eddie Bauer1984–88 trucks are two-tone over Light Desert Tan with Eddie Bauer fender badges, a logo on the passenger side of the dash and a tan interior with pine-tree stitching. 1989–90 trucks are two-tone over Light Sandalwood and have a signature decal instead of a badge, plus striped seats with Eddie Bauer and duck headrest graphics.
  6. ID
    Early-build cluesRemovable flip-out quarter windows appeared only on early 1983.5 production. Glued-in side glass with metal trim means a 1984 to early-1985 build. Front-door vent windows ended in 1988. A 1984 fuel tank has a smaller sending-unit opening than 1985–90 tanks.

Recalls & service bulletins

Open recalls follow the VIN, not the model. Run yours through NHTSA before you buy, and ask the seller for dealer records showing recall work.

Check a VIN at NHTSA ↗
Notable recalls
Shoulder-belt D-ring anchorage too weak ↗1984 · NHTSA 83V-134The D-ring mounting didn't meet FMVSS 210; dealers installed stronger attaching hardware.
Automatic locking-hub cams may crack ↗1984 · NHTSA 84V-023Improperly heat-treated hub components could fracture when the front axle engaged; cam assemblies were replaced.
EEC wiring harness short can open fuel injectors ↗1986 · NHTSA 85V-116Welding spikes could damage harness insulation and short the fuel-pump circuit, discharging fuel into the engine; the harness was repaired and the engine and catalyst checked.
Nylon fuel-return lines may crack ↗1986 · NHTSA 85V-130Lines on the return side of the pressure regulator could crack and leak; they were replaced with rubber hoses.
Spring-lock fuel couplings may not be engaged ↗1986–1987 · NHTSA 87V-139Dealers installed retainer clips over the couplings to prevent separation and fuel leaks.
Wrong lug nuts on aluminum wheels ↗1987 · NHTSA 87V-039Tapered lug nuts were replaced with the correct short-shank type.
Handling-warning sticker on the sun visor won't stay on ↗1987 · NHTSA 87V-070The handling and maneuverability decal didn't meet the permanent-adhesion requirement; owners were mailed new visor sleeves with the warning printed on.
Power lumbar seat wiring can chafe ↗1986 · NHTSA 88V-145Wiring routed under the seat springs could be abraded; a fuse was added to the circuit.
Front wheel-bearing nut retaining keys missing ↗1989 · NHTSA 89V-109Without the keys the adjusting nut could loosen; dealers installed them where missing.
Automatic transmission park pawl may not engage ↗1990 · NHTSA 91V-189The park pawl didn't always engage the park gear; transmissions were repaired with a new pawl.
The one you’ll own someday

For sale now

1984–1990 · USAll Bronco IIs
1984–1988 · USEarly body (2.8 and early 2.9)
1989–1990 · USFacelift
PART 04

Owning one

Baseline service, the repairs you’ll actually do, and where the manuals live.

Post-purchase baseline

After you buy it

Most Bronco IIs for sale are 35-plus years old and have passed through several cheap owners, so baseline everything. On a 2.9, the cooling system is a priority, because The Ranger Station says one overheat can crack an early head, and it calls synthetic oil and good cooling maintenance essential. On a 4x4, service the transfer case with ATF, not gear oil, and inspect the TTB front end.

Engine oil & filter2.9: 5.0 qt with filter (4.0 qt without) · 2.8: 5 qt with filter · grade [CONFIRM IN MANUAL]Change at purchase, then per the owner's manual [CONFIRM IN MANUAL]

Check oil pressure if the valve train is noisy: The Ranger Station quotes about 20 psi at warm idle and 55 psi at 2,000 rpm for the 2.9. Look for milky residue under the filler cap.

Coolant, thermostat & hoses7.2 qt (with A/C) / 7.8 qt (without A/C) per The Ranger Station · coolant type [CONFIRM IN MANUAL]Flush at purchase; fit a new thermostat and hoses if their age is unknown

The single most important item on a 2.9. Pressure-test the system and check the radiator, fan clutch and water pump.

Spark plugs, wires, cap & rotorMotorcraft AWSF-42C gapped 0.044 in · timing 10° BTDC · firing order 1-4-2-5-3-6Replace at purchase

These specs are listed for both the 2.8 and the 2.9. On the 2.8, check that the distributor hold-down and rotor screws are tight, because loose ones change the timing.

TFI ignition moduleDistributor-mounted thick-film moduleInspect at purchase; carry a spare

Heat makes it fail intermittently on a hot engine. Relocating it to a heat sink is a well-documented fix.

Air & fuel filters[CONFIRM IN MANUAL]Replace at purchase; check the air filter after dusty trails

The 2.9 is fuel-injected (30–40 psi fuel pressure per The Ranger Station), so relieve the pressure before opening the lines. Recall 87V-139 added retainer clips to spring-lock fuel couplings on 1986–87 trucks.

Automatic transmission (A4LD)Mercon ATF (Mercon V as the modern replacement) · ≈ 9.5 qt totalPan drop and filter at purchase

A pan drop replaces only part of the fluid. Check the vacuum modulator line for ATF and add an auxiliary cooler. 1985–87 units are the most fragile.

Manual transmissionTK4, TK5 and M5OD: Mercon ATF · FM145 and FM146: [CONFIRM IN MANUAL]Drain and refill at purchase

Identify the gearbox from the TRANS code on the door-post label. On an M5OD, replace the three rubber top-cover plugs with steel cup plugs (Dorman 555-108 or Dana 219-3052), because leaks there can run it low.

Transfer case (BW1350 / BW1354)≈ 2 qt ATF: Dexron III/Mercon, Mercon V or Mercon LV per the factory manual, NOT gear oilDrain and refill at purchase

The 2WD BW1359 pass-through case is a special case: some contain ATF and some are dry. On Touch-Drive trucks, test every mode from the buttons.

Front differential (Dana 28 / Dana 35 TTB)Hypoid gear oil SAE 80W or 90W · The Ranger Station lists 2 qt (Dana 28) / 3 qt (Dana 35) [CONFIRM AT FILL PLUG]Change at purchase and after deep water

Check the slip-yoke seal on the long side and the axle vent.

Rear differential (Ford 7.5)Hypoid gear oil SAE 75W-80 or 80W-90 · ≈ 5 pints · add 2 oz friction modifier for a limited slipChange at purchase

The axle code on the door-post label tells you the ratio and whether it's a limited slip.

Front hubs & wheel bearingsWheel-bearing grease [CONFIRM IN MANUAL]Repack at purchase

Check that the bearing-adjusting nut retaining keys are present (recall 89V-109 covered trucks that left the factory without them). Replace failing automatic hubs with manual hubs.

TTB bushings, ball joints & steeringBeam pivot bushings · radius-arm bushings · ball joints · tie-rod endsInspect at purchase

Uneven tire wear is the tell. Fix camber with offset bushings, not by ignoring it.

Brake fluidDOT 3 [CONFIRM IN MANUAL]Flush at purchase

Front discs and rear drums, with rear-wheel ABS from 1987. On manual trucks the hydraulic clutch is worth bleeding at the same time.

For the hands-on owner

Common repairs

The jobs owners actually end up doing, rated for a competent home mechanic with a decent tool kit. Always confirm torque figures, fluids and procedures against the factory service manual for your VIN, and work safely — support the truck on stands, never just a jack. You do this work at your own risk; see the disclaimer. Some parts links are affiliate links.

Replace cracked 2.9 cylinder heads
DIFFICULTY · 4 / 5TIME · ≈ 1–2 daysSHOP COST · Parts plus machine-shop inspection
SYMPTOMSWhite smoke when warm, clean spark plugs, low compression on one or more cylinders, coolant loss with no external leak, or milky "snot" on a warm dipstick or oil cap.
THE FIXStop driving it: The Ranger Station warns that coolant in the oil destroys the crank bearings and turns a head job into a rebuild. Drain the oil and coolant, pull the intake and both heads, and have them magnafluxed to confirm the crack. Fit the improved 1989-on heads (89TM castings with rectangular rocker pedestals) or aftermarket heads from World Products. Torque the head bolts in three steps: 22 lb-ft, then 51–55 lb-ft, then a further 90 degrees. Tighten the intake manifold to 15–18 lb-ft in five steps and retorque it after warm-up. Old valve covers with turned-down flanges tend to leak on the newer heads, so use later covers with turned-up flanges. Change the oil again after the first run.
TOOLS & PARTSTorque wrench and angle gauge · gasket scraper · compression tester · machine-shop magnaflux.
Replace 2.8 valve stem seals without pulling the heads
DIFFICULTY · 3 / 5TIME · ≈ 4–6 hoursSHOP COST · Under the price of a set of seals plus an air adapter
SYMPTOMSBlue smoke on start-up or overrun, and oil consumption on a high-mileage 2.8. The Ranger Station says the original rubber valve seals deteriorate and leak oil into the cylinders.
THE FIXRemove a valve cover, then the spark plug and wire for the cylinder you're working on. Loosen the rocker-shaft stand bolts two turns at a time from the ends toward the middle, lift off the shaft and oil baffle, and remove both pushrods. Screw an air adapter into the 14 mm plug hole and pressurize the cylinder to hold the valves shut; if they won't hold, the seats are damaged and the head has to come off. Compress the spring, remove the keepers, retainer and spring, replace the seal and reassemble. Repeat on each cylinder, then reset the valve lash (0.014 in intake, 0.016 in exhaust).
TOOLS & PARTSAir compressor · spark-plug-hole air adapter · valve spring compressor · feeler gauges · torque wrench.
Reseal leaking valve covers
DIFFICULTY · 2 / 5TIME · ≈ 1–2 hoursSHOP COST · Parts only
SYMPTOMSOil weeping down the heads onto the exhaust manifolds, a burning-oil smell after a drive, an oily engine bay.
THE FIXThe Ranger Station calls Cologne valve-cover leaks messy but not dangerous, apart from rare fires when a lot of oil reaches the exhaust. Remove the intake plumbing or wiring that's in the way, unbolt the covers, clean both sealing surfaces completely and fit Fel-Pro rubber or Fel-Pro Blue gaskets. If the engine has the improved 1989-on heads, use the later covers with turned-up flanges, because old-style covers leak on the flatter surface. Tighten the bolts evenly and only lightly.
TOOLS & PARTSSockets and extensions · gasket scraper · brake cleaner.
Replace or relocate the TFI ignition module
DIFFICULTY · 2 / 5TIME · ≈ 30 minutes (replace) · 2–3 hours (relocate)SHOP COST · Parts plus a donor heat sink
SYMPTOMSThe engine dies or won't restart when hot, then runs again after it cools down, without leaving a trace of the fault.
THE FIXThe Thick Film Ignition module is mounted on the distributor, one of the hottest places under the hood. Disconnect the battery and remove the two screws with a thin-wall 7/32 in (5.5 mm) socket or a T20, depending on the screw. Slide the module down before pulling it away from the distributor, or it won't come off. For a permanent fix, The Ranger Station shows how to mount the module remotely on a finned heat sink from a 1989–95 Mercury Cougar or an Aerostar, trimming fins to clear the Ranger's connectors. Don't paint the heat sink. On the 2.8, owners also convert to Duraspark, GM HEI or aftermarket ignition.
TOOLS & PARTSThin-wall 7/32 in (5.5 mm) socket or ignition-module wrench · T20 driver · basic hand tools.
Service the A4LD, replace the modulator and add a cooler
DIFFICULTY · 2 / 5TIME · ≈ 2–3 hoursSHOP COST · Parts plus fluid
SYMPTOMSDark or burnt-smelling fluid, slipping, no overdrive, hard or erratic shifts, a missing 1–2 shift or third gear, or white exhaust smoke from ATF being drawn through a ruptured modulator.
THE FIXDrop the pan, change the filter, clean the pan and refill with Mercon-type ATF (The Ranger Station recommends Mercon V as the modern replacement; total capacity is about 9.5 quarts). Pull the vacuum hose from the modulator: fluid in the hose means the diaphragm has failed, and you can confirm it with a vacuum gauge before fitting a new one. Heat is the main enemy of the A4LD, so fit an auxiliary cooler in the return line to supplement the radiator cooler. On 1988-on dual-solenoid units, test the 3-pin connector if overdrive or lock-up is missing.
TOOLS & PARTSDrain pan · sockets · gasket scraper · hand vacuum pump or gauge · funnel.
Refresh the TTB front end and set camber
DIFFICULTY · 3 / 5TIME · ≈ 4–6 hours plus an alignmentSHOP COST · Parts plus an alignment
SYMPTOMSTires wearing on the inside or outside edge, clunks over bumps, wandering, or play when you rock the wheel top to bottom.
THE FIXSupport the frame and unload the front axle. Inspect the beam pivot bushings where each beam meets its frame bracket, the radius-arm bushings, the ball joints and the tie-rod ends, and replace whatever is worn. Camber on a TTB is set with an offset cam bushing around the upper ball joint, and the right bushing brings worn or lifted beams back into spec. On 1984–88 axles the ball joints are in the beam; from 1989 they moved to the knuckle. If the truck is lifted, check that it has drop brackets for the beam pivots and radius arms and a dropped pitman arm. The Ranger Station warns against kits that lower the passenger beam pivot with a bolt-on drop plate, because the differential can strike it. Finish with a proper alignment.
TOOLS & PARTSJack and stands · ball-joint press · pickle fork · large sockets · torque wrench.
Find and seal water leaks
DIFFICULTY · 2 / 5TIME · ≈ 1–8 hours depending on the leakSHOP COST · Seam sealer plus any parts
SYMPTOMSA wet front floor, water in the glove box, drips from the headliner just behind the windshield, a wet cargo carpet, fogged windows and a musty smell.
THE FIXFirst rule out the heater core: a passenger floor that stays wet without rain is usually coolant, and the core sits behind an easy-to-remove panel under the dash. On 1984–88 trucks, clear the cowl drains and seal the cowl-to-firewall seam. Small holes can be sealed through the access covers, but rusted cowls mean drilling out spot welds. For the A-pillar and roof seam, the rear drip rail and the area above the hatch, dig out the cracked factory seam sealer and apply new sealer (silicone is only a temporary fix). Leaking side glass has to come out: remove the trim, unbolt the glass, cut the old seal with piano wire with a helper and reseal it with tar ribbon. Don't force it, because the glass breaks easily and is expensive.
TOOLS & PARTSTrim tools · seam sealer · tar ribbon · piano wire · drill (for cowl repairs).
Fix a liftgate that won't release
DIFFICULTY · 1 / 5TIME · ≈ 30 minutesSHOP COST · One washer
SYMPTOMSYou turn the handle, feel resistance and a click, and the tension lets go without the gate opening, or it only opens if you push on the handle while turning it.
THE FIXThis is the Bronco II Corral fix for a worn release catch. Remove the inner trim panel (screws around the edge, then slide it forward and pop the push-pins). Remove the two 9 mm nuts and the retaining plate and pull the handle out. Take out the 7/32 in screw on the end of the handle, lift off the latch arm, put a 9/16 in washer under it as a shim and refit the arm the right way round (the nub faces away from the word "Gate"). Test the gate before refitting the panel. If you're stuck in the meantime, you can open the gate from inside by pulling one of the latch rods toward the center.
TOOLS & PARTSPhillips screwdriver · 1/4 in ratchet · 9 mm and 7/32 in sockets · push-pin pliers.

Manuals & documentation

Asked on every forum

Ford Bronco II questions, answered

What's the biggest tire I can fit without a lift?

Stock was 205/75R15, about 27 inches tall. The Ranger Station shows a stock-height Bronco II on 31x10.50R15s with trimmed fenders, and its rule of thumb is that 31s need about 1.5 inches of lift plus fender trimming. 32x11.50R15s have fitted on a 1.5-inch lift with the bottom rear corner of the front fender trimmed. Remember that the Dana 28 front axle is rated for about 31-inch tires.

SOURCE · THE RANGER STATION
2.8 or 2.9: which engine should I want?

The carbureted 2.8 (1984–85) is simple, with gear-driven cam timing, but it makes 115 hp, burns oil through worn valve seals, and its aging feedback carburetor tends to misbehave. The injected 2.9 (1986–90) makes 140 hp and 170 lb-ft. Its early heads crack and its top end is sensitive to cam-bearing wear, but 1989-on 89TM heads largely cured the cracking. A well-maintained 2.9 with the later heads is the pick.

SOURCE · THE RANGER STATION · FOUR WHEELER
Was there really a diesel?

Yes. Ford offered a Mitsubishi 2.3-liter turbodiesel four-cylinder. The Ranger Station's specification table lists it for 1986 only, while Wikipedia and a Hemmings history say 1986–87. Everyone agrees it was slow and sold poorly, so factory diesel Bronco IIs are rare today.

SOURCE · THE RANGER STATION · WIKIPEDIA
Is the Bronco II really more likely to roll over?

NHTSA twice declined to call it defective, in 1990 and 1999, because its rollover rate per single-vehicle crash was similar to its peers. The same 1999 review called its crashworthiness in rollovers "a cause for concern": a much larger share of occupants died in first-event rollovers than in most comparable SUVs. IIHS figures cited by Automobile put the 1986–90 rear-drive truck at 3.78 rollover deaths per 10,000 vehicles and the 4x4 at 1.74. It's a narrow, short truck, so drive it accordingly and be careful about adding height.

SOURCE · NHTSA · AUTOMOBILE MAGAZINE
Dana 28 or Dana 35: what do I have and does it matter?

Almost every Bronco II has the Dana 28 TTB: 23-spline shafts, a 6.625-inch ring gear and little aftermarket support for gears or lockers now. Only 1990 trucks built from November 1989 got the Dana 35, with 27-spline shafts and a 7.56-inch ring gear. Count the cover bolts (12 on a Dana 28, 10 on a Dana 35) or read the date code. Serious builders swap in a Dana 35 from an Explorer.

SOURCE · THE RANGER STATION
Can a 2WD Bronco II be converted to 4WD?

Yes. It's a common, well-documented job because most 2WD trucks already have the 4WD-style transmission and a BW1359 pass-through case in the transfer-case position. You need a front TTB axle, a working transfer case and shifter, a front driveshaft and the matching parts. Late 1990 2WD trucks with a true 2WD transmission and a flange adapter need more work.

SOURCE · THE RANGER STATION
Which transmission is best?

Manuals are the safe bet: Ford fitted TK4 (1984), TK5 and FM145 (1985–87), and FM146 or Mazda M5OD five-speeds (1988–90). The M5OD runs on Mercon ATF and tends to leak from rubber plugs in its top cover, which owners replace with steel cup plugs (Dorman 555-108). The Ranger Station rates the 1985–87 A4LD automatic as the weakest and says it improved from mid-1988. Whatever you have, add an auxiliary cooler to an A4LD.

SOURCE · THE RANGER STATION
What fluids does it take?

According to The Ranger Station's specification pages, the 2.9 takes 5.0 quarts of oil with the filter and the 2.8 takes 5. The BW1350 and BW1354 transfer cases take about 2 quarts of ATF (Dexron III/Mercon, Mercon V or Mercon LV, never gear oil). The A4LD takes Mercon (Mercon V is the modern replacement), about 9.5 quarts. The 7.5 rear takes 75W-80 or 80W-90 hypoid oil, about 5 pints, with 2 oz of friction modifier for a limited slip. Check grades in the owner's manual.

SOURCE · THE RANGER STATION
What engine swaps do people do?

The most common is the 4.0 V6 from an Explorer or later Ranger, which shares Cologne family roots with the 2.9, and The Ranger Station has wiring guides for 4.0 swaps into both early and late dashes. The 5.0 V8 is the bigger project. Bring a Trailer has sold several swapped trucks, including 4.0-powered 1988 and 1989 Bronco IIs and a 302-powered 1989.

SOURCE · THE RANGER STATION · BRING A TRAILER
How is it related to the Ranger and the Explorer?

It is a first-generation Ranger underneath, built on the same Louisville line with the same TTB front end, 7.5 rear and Cologne V6s, and nearly the same driver's compartment. The Explorer replaced it for 1991, still Ranger-based but bigger, with four doors available and a 4.0 V6. Its Dana 35, 8.8 rear axle and 4.0 are now the standard Bronco II upgrades.

SOURCE · WIKIPEDIA · THE RANGER STATION
What are they worth?

Not much yet, which is part of the appeal. On Bring a Trailer in 2025–26, most stock XLTs and Eddie Bauers sold for $6,450 to $15,750. A 9,000-mile 1989 Eddie Bauer reached $28,550 in April 2025, and a 1989 Eddie Bauer five-speed was bid to $12,000 in August 2026 without selling.

SOURCE · BRING A TRAILER
PART 05

Building one

Who makes the good stuff, where owners gather, and who to watch.

Common modifications & who does them

SUSPENSION LIFTTTB lifts use taller coils, drop brackets for the beam pivots and radius arms, a dropped pitman arm and rear add-a-leafs or blocks. The Ranger Station's builder guides name James Duff and Skyjacker, and warns against bolt-on drop plates for the passenger beam pivot.
FENDERS & FLARESBigger tires on a Bronco II mostly come down to fender trimming. Cut-out flares are how the 33- and 35-inch builds on The Ranger Station clear without huge lifts.
AXLE SWAPS & GEARSThe Dana 28 is good for about 31-inch tires, so builders swap in an Explorer Dana 35 TTB in front and often an Explorer 8.8 in the rear, then regear both to suit the tires.
LOCKERSThe Ranger Station's builder guide lists a Lock-Right (1830-LR) for the 7.5 rear. The Dana 28 front has little support left, which is one more reason to swap to a Dana 35.
ENGINE SWAPSA 4.0 V6 from an Explorer is the classic Bronco II upgrade, and a 5.0 V8 is the ambitious one. Adapters, mounts and wiring are well documented.
RECOVERYA small, light truck still needs a winch and real recovery points. The Ranger Station's builder guide sizes a winch at 1.5 times the gross vehicle weight.

Clubs & events

Resources

Channels, accounts & forums

All Bronco resources →
SourcesWikipedia — Ford Bronco IIWikipedia — Ford Ranger (Americas) (shared interior, Bronco II introduction)Wikipedia — Twin-Traction BeamWikipedia — Ford Cologne V6 engineFederal Register 64 FR 27343 (May 19, 1999) — NHTSA denial of petition DP97-006, Ford Bronco II rollover (history of EA89-013, US sales by model year, crashworthiness analysis)Los Angeles Times — Agency to launch study of Ford Bronco II after high rate of roll-over accidents (March 16, 1989)Los Angeles Times / Reuters — Ford settles again with owners of its Bronco II (January 31, 1997)Automobile Magazine — Why the Bronco II was one of Ford's epic disasters (Aaron Gold, 2020)PBS Frontline — Rollover: chronologyPBS Frontline — Rollover: program synopsisNHTSA — recalls API, Ford Bronco II 1984–1990The Ranger Station — Ford Bronco II specifications & factsThe Ranger Station — Ford Bronco II historyThe Ranger Station — Bronco II trim levels & packagesThe Ranger Station — Eddie Bauer Ford Bronco IIThe Ranger Station — Ford Bronco II production numbersThe Ranger Station — Ford Bronco II rolloversThe Ranger Station — Lost vehicles of the 1980s: Ford Bronco II (Hemmings Daily repost)The Ranger Station — Bronco II: a guide to Ford's smaller SUV (Four Wheeler repost)The Ranger Station — Ford 2.8L V6 enginesThe Ranger Station — Ford 2.9L V6 enginesThe Ranger Station — Ford 2.8L valve seal replacementThe Ranger Station — Remote-mounted TFI ignition moduleThe Ranger Station — Ford Ranger A4LD automatic transmissionThe Ranger Station — Ford Ranger & Bronco II manual transmissionsThe Ranger Station — Ranger & Bronco II transfer casesThe Ranger Station — BW1359 dummy transfer caseThe Ranger Station — Ford Ranger 4x4 front axles 1983–1997 (Dana 28/35 TTB)The Ranger Station — Ford 7.5-inch rear axle history & specsThe Ranger Station — 1983–1997 TTB suspension modification guideThe Ranger Station — Bronco II lift and tire guideThe Ranger Station — Ford Bronco II builder's guideThe Ranger Station — Ford Bronco II common upgradesThe Ranger Station — Bronco II leak-prone areasThe Ranger Station — Bronco II liftgate latch repairThe Ranger Station — Ford Bronco II fuel tankBring a Trailer — Ford Bronco II resultsKoleso.ee — Ford Bronco II 1984–1988 wheel specificationsThe Ranger Station — Ford Bronco II specifications & factsThe Ranger Station — Ford Bronco II production numbersThe Ranger Station — Ford Bronco II historyThe Ranger Station — Bronco II trim levels & packagesThe Ranger Station — Eddie Bauer Ford Bronco IIThe Ranger Station — Bronco II lift and tire guideThe Ranger Station — Ford Bronco II common upgradesThe Ranger Station — Ford Ranger 4x4 front axles 1983–1997The Ranger Station — Ford Ranger & Bronco II manual transmissionsThe Ranger Station — Ranger & Bronco II transfer casesThe Ranger Station — BW1359 dummy transfer caseThe Ranger Station — Ford 2.9L V6 enginesThe Ranger Station — Ford Bronco II fuel economy ratingsThe Ranger Station — Ford Bronco II fuel tankThe Ranger Station — Bronco II: a guide to Ford's smaller SUV (Four Wheeler repost)Wikipedia — Ford Bronco IIFederal Register 64 FR 27343 (May 19, 1999) — NHTSA DP97-006 petition analysis (sales by model year, track width)NHTSA — recalls API, Ford Bronco II 1984–1990Koleso.ee — Ford Bronco II 1984–1988 wheel specificationsBring a Trailer — Ford Bronco II results