A dark green 1986–91 Jeep Grand Wagoneer with woodgrain sides parked on a red-dirt gravel pull-off beside a mountain road in western North Carolina
JEEP GRAND WAGONEER · SJ · 1984–1991

Jeep Grand Wagoneer (SJ)

SJ PLATFORMAMC 360 5.9 V8TF727 3-SPEED AUTOSELEC-TRAC NP228/NP229DANA 44 FRONT

“A 1962 design in a vinyl-wood cardigan, still drinking carbureted 360 V8 fuel when Chrysler finally switched off the Toledo line in 1991. It is slow, thirsty and gloriously out of date, and it invented the idea that a truck could be the nicest car in the driveway. Buy the rust you can see, budget for the rust you can't.”

PART 01

Overview

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

The story

Jeep introduced the Wagoneer in November 1962 for the 1963 model year, and the same SJ body was still in production 29 model years later. By 1991 it was the longest-running domestically produced vehicle on one platform. For its final eight years it was called Grand Wagoneer: a body-on-frame, solid-axle, carbureted-V8 station wagon with simulated woodgrain on its flanks and leather inside. It was sold as the gold standard of the SUV market at a time when nobody had yet called it an SUV.

THE KAISER ORIGINAL (1963–1969)

Industrial designer Brooks Stevens shaped the Wagoneer for Kaiser-owned Willys, which renamed itself Kaiser Jeep Corporation shortly after launch. It shared its chassis with the Gladiator pickup and was more car-like than any other 4x4 on sale. It offered an overhead-cam 'Tornado' six of 140 hp, independent front suspension, power steering, an automatic gearbox and optional air conditioning. Development took three years and cost about $20 million. When it arrived it had no direct rival: the two-door Range Rover was still eight years away.

The independent front end did not catch on and was dropped from four-wheel-drive models in 1965. An AMC 327 V8 arrived the same year. The 1966 Super Wagoneer added a 270 hp four-barrel V8, a tilt wheel, a console-shifted TH400 and a power tailgate window. Only about 3,989 were built, and Wikipedia calls it the precursor of today's luxury SUVs. From 1968 to 1971 a Buick 350 'Dauntless' V8 did the work.

AMC TURNS IT INTO A LIMOUSINE

AMC bought Kaiser Jeep in 1970 and refined the truck rather than replacing it. The AMC 360 and 401 V8s arrived after 1971. In 1973 came Quadra-Trac, a full-time 4WD system that saved buyers from locking hubs and a stiff transfer-case lever, and woodgrain side trim appeared from 1971. The 1978 Wagoneer Limited added leather, power seats, cruise control and forged aluminum wheels. At $10,500 it was priced against Cadillacs and Lincolns, and AMC built 28,871 Wagoneers that year.

When the unibody Cherokee XJ arrived for 1984, AMC planned for the compact XJ Wagoneer to replace the big wagon. Demand kept the old truck alive. The Limited became the Grand Wagoneer, which freed the 'Wagoneer Limited' name for the XJ. A cheaper, wood-free Wagoneer Custom lasted only through 1984, and from 1985 there was a single fully loaded version. The 1986 update brought a new grille and hood ornament, a redesigned dash with square gauges, new seats and a Trac-Lok limited-slip for the Selec-Trac driveline.

CHRYSLER LEAVES IT ALONE

Chrysler agreed to buy AMC on March 9, 1987, and largely left the Grand Wagoneer alone. It still made $5,000 to $6,000 per truck, and Chrysler kept building it with the carbureted AMC 360. The 360 became one of the last carbureted engines in an American-built vehicle. The 1989–91 trucks are considered the best: they got a better A/C compressor to replace the earlier leak-prone unit, a rear wiper, an overhead console with compass and thermometer, keyless entry, electrocoat primer and base-clear paint.

Then fuel prices rose with the 1990 oil shock. Sales fell from more than 10,000 in 1989 to 6,449 in 1990, and only 4,253 were built for 1991. The platform would also have needed major re-engineering for upcoming federal light-truck safety rules. Chrysler announced the end on February 27, 1991, offered a gold 'Final Edition' dash badge, and built the last Grand Wagoneer in Toledo on June 21, 1991. The name came back for one year on the 1993 ZJ Grand Cherokee and then returned in 2021 on the WS-platform Wagoneer and Grand Wagoneer.

THE AFTERLIFE: RESTOMODS AND RISING PRICES

Specialist shops were refurbishing Grand Wagoneers before Chrysler built the last one. Wagonmaster, founded by Leon Miller in Kerrville, Texas, keeps the original look but replaces the carburetor with throttle-body fuel injection. Classic Gentleman, G.K. Kerr's shop in Bemus Point, New York, looks for low-mileage trucks and offers full rebuilds and color changes. In 2019 DrivingLine reported $40,000 to $80,000 for trucks from either shop. Kerr told Hagerty he won't buy trucks from road-salt states.

Hagerty said its Grand Wagoneer values rose an average of 2–6% with each bi-monthly update, with a 1991 in #2 condition at $36,900 and a #1 at $62,200 when that piece ran. By 2021, Wikipedia notes, Hagerty listed the 1984–91 trucks among the most sought-after vintage cars of the COVID-19 pandemic. The 1984–91 Grand Wagoneer belongs to the same era as the FJ60 Land Cruiser and the four-door Range Rover Classic. Of the three, it is the one most likely to be restored with an EFI V8 and sold as a lifestyle object.

SIDEBAR · THE MEXICAN AMBASSADOR

VAM's 4.6-liter six and the 'Ambassador' finale

Mexico had its own full-size Jeeps. Vehículos Automotores Mexicanos built Wagoneers with a 282 cu in (4.6 L) six from its Lerma plant, an engine designed for low-octane fuel and high altitude, and offered Alpina and base trims that never reached the US.

Its last product was the 1987 VAM Wagoneer Ambassador: a four-seater with a second pair of front seats or captain's chairs in place of the rear bench, landau-style rear windows and 'Ambassador' badges. Most sources put production at 10 to 30, in black or white only.

Year by year

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

  1. 1984The SJ Wagoneer Limited becomes the Grand Wagoneer as the compact XJ takes the Wagoneer name; Brougham dropped; a no-woodgrain Wagoneer Custom lasts only this year. 258 six standard and 360 V8 optional, per Hagerty
  2. 1985Handling package: revised front anti-roll bar, gas shocks and lower-friction rear springs
  3. 1986New four-part grille and stand-up hood ornament; fully revamped interior with square gauges and improved climate control; Selec-Trac gains a Trac-Lok limited-slip; factory power sunroof optionSweet spot
  4. 198725th anniversary: the 360 V8 becomes the only engine; 'marine teak' woodgrain, Michelin self-sealing P235/75R15s. Chrysler agrees to buy AMC in March
  5. 1988First full Chrysler year; carbureted 360 retained; 14,117 built
  6. 1989Start of the 'best of the breed' run: more reliable A/C compressor, rear wiper/washer, minivan-sourced overhead console with compass and thermometer, keyless entry, electrocoat primer and base/clear paint, gunmetal wheel inlaysSweet spot
  7. 1991Final year; buyers after the February 27 discontinuation announcement could add a gold 'Final Edition' dash badge. Last truck built June 21, 1991Sweet spot
PART 02

Specs & capability

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

How it’s built

The Grand Wagoneer is a 1963 design updated over the years. It has a separate ladder frame (boxed and strengthened from 1976), leaf springs and solid axles at both ends, a carbureted AMC 360 V8, a Chrysler TorqueFlite 727 three-speed automatic and a chain-drive New Process transfer case. Jeep's 1989 spec sheet lists a 108.7 in wheelbase, 186.4 in length, 10.1 in minimum running clearance, a 20.3-gallon tank behind a skid plate, and P235/75R15 tires on 15x7 six-lug wheels.

CHASSISSJ body-on-frame, 108.7 in wheelbaseShared with the J-Series pickups. Boxed side rails and stronger crossmembers from 1976.
ENGINEAMC 360 (5.9 L) V8, 2-bbl Motorcraft 21508.25:1 compression. Ratings vary by source: Hagerty quotes 140 hp / 280 lb-ft; Offroaders.com and Wikipedia's AMC V8 table give 144 hp / 280 lb-ft for the 1991 two-barrel. Hagerty says a 4.2 L six was the standard engine for 1984–86.
TRANSMISSIONChrysler TorqueFlite A727 three-speed autoColumn shift. Hagerty's specialist puts the worst-case rebuild at about $2,000.
4WD SYSTEMSelec-Trac NP228 / NP229Vacuum-shifted 2WD/4WD on the fly, 2.6:1 low range (1989 spec). NP229 adds a viscous coupling; some 1984–88 trucks used the part-time NP208.
AXLESDana 44 front · AMC or Dana 44 rear1989 spec: full-floating Dana 44 front, AMC semi-floating rear, both 2.73:1. Trac-Lok limited slip from 1986. Check the axle tag before ordering parts.
BRAKES & STEERINGFront disc / rear drum · variable-ratio power steeringRecirculating ball, 16:1 to 13:1, 37.7 ft turning circle.

Variants & engines

YEARSPLATFORMENGINEOUTPUTWORTH KNOWING
1963–1965Wagoneer (Kaiser)Tornado 230 OHC I6140 hpIFS optional on 4WD (dropped 1965). Two- and four-door wagons and a panel delivery.
1965–1968Wagoneer / Super WagoneerAMC 327 V8 · AMC 232 I6250 hp (270 hp Super)Super Wagoneer 1966–69, about 3,989 built.
1968–1971WagoneerBuick 350 Dauntless V8230 hp / 350 lb-ftLast non-AMC engine. Solid axles and leaf springs only from 1969.
1972–1983Wagoneer (AMC)AMC 360 / 401 V8 · 258 I6Varies by yearQuadra-Trac from 1973, Limited trim from 1978, Selec-Trac standard for 1983.
1984–1986Grand WagoneerAMC 360 V8 (4.2 I6 offered)140–144 hp (see engineering)Renamed from Limited. 1986 refresh: grille, dash, Trac-Lok.
1987–1991Grand Wagoneer (Chrysler)AMC 360 V8, 2-bblHagerty: 140 hp / 280 lb-ftMarine-teak woodgrain from 1987. 1989–91 best of the breed; 1991 Final Edition badge.
1993Grand Wagoneer (ZJ)5.2 L Magnum V8220 hpA one-year woodgrain Grand Cherokee, 6,378 built. A different truck entirely.

Capability numbers

Towing5,000 lb (2,270 kg)Trailer Package B (Class III), 750 lb tongue; Package A is rated 3,500 lb (1989 spec)
GVWR6,200 lb (2,812 kg)
Fuel tank20.3 US gal (77 L)with skid plate
Ground clearance10.1 in (257 mm)minimum running clearance
Curb weight4,514 lb (2,048 kg)
Fuel economyAbout 11 mpg combined5.9 L V8
Drivetrain360 V8, 727 three-speed automatic, Selec-Trac NP229 with 2.6:1 low range, Dana 44 front, 2.73:1 axles1989 spec

Wheels & tires

FACTORY TIRES
P235/75R15 (Michelin Tru Seal self-sealing radial standard from 1987)
Bolt pattern6x139.7 (6x5.5")
Center bore108 mm

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

Production & special editions

Built at Toledo's Stickney plant; the SJ ran 29 model years in all, and Grand Wagoneer output fell steadily after 1984.

Built by year20,019 (1984) · 17,814 (1985) · 17,254 (1986) · 14,265 (1987) · 14,117 (1988) · 4,253 (1991)
SalesOver 10,000 in 1989, falling to 6,449 in 1990
PlantStickney Plant, Toledo, Ohio
Wagoneer Custom1984Cheaper SJ without woodgrain, steel wheels and part-time 4WD, about $3,000 under the Grand; dropped after one year
Final Edition1991Gold dash badge offered to buyers after the February 27, 1991 announcement

Hunter green metallic was offered only for 1991 and is the colour of the very last Grand Wagoneer built.

PART 03

Buying one

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

What they cost

Hagerty reported values rising through most of the 2010s, and the market is still deep: original low-mile 1989–91 trucks and Final Editions lead, while fuel-injected and LS-swapped restomods sell for whatever the build cost.

Project / needs work$7k–14k
Driver$17k–36k
Excellent / low-mile or restomod$42k–92k

Compiled from Bring a Trailer Grand Wagoneer results in October 2026 (about 76 sales, median around $27,400, middle half roughly $17,900–42,500); the best originals and restomods reached the high $80k to low $90k range. Recheck current results before relying on these figures. Prices move; checked October 2026. See live listings below.

What to check before you buy

  1. 01
    Rust first, everything else secondHagerty's buyer's guide calls rust the biggest concern. Lift the front carpet to see the floor pans, then check where the fuel tank meets the body, the underbody and frame, and the front fenders near the parking lamps. New fenders are no longer available. YourMechanic adds the frame near the fuel-tank skid plate and the rockers, and says the driver's floor is the most common hole.
  2. 02
    Bubbles under the woodgrainThe wood is vinyl. Bubbles under it usually mean rust working from the inside. Replacement Cherry Oak and Marine Teak (1987–91) vinyl kits exist, but the metal underneath has to be fixed first.
  3. 03
    Drive it cold and hotKerr estimates the Motorcraft carburetor causes about 40% of owner headaches. Stumbling or stalling cold or hot is common. Also listen for ignition faults and watch the oil-pressure gauge. A rear main seal leak costs $500–1,000 to fix.
  4. 04
    Test 4WD on the moveSelec-Trac should engage on the fly. Check that 4WD engages and disengages properly and shift through every range; low range can grind. Look for leaking transfer-case seals.
  5. 05
    Work every switchWindow flex tracks snap, and window and power-lock switches fail often. The rear-window switch frequently dies, and because the glass must come down to reach the inside tailgate handle, a dead switch can lock you out of the tailgate.
  6. 06
    Check the A/C and the cabinA/C repairs are expensive. The 1989–91 trucks got a better compressor than the earlier leak-prone one. Sagging headliners and water-damaged door panels are common.
  7. 07
    Know the yearWikipedia points to 1989–91 for better rustproofing, paint and equipment, and a 1991 Final Edition commands a premium. Hagerty says tan or sand interiors and blue, green or white paint sell best.
  8. 08
    Ask where it livedKerr won't buy trucks from road-salt states and estimates about 20% of needed parts have to come from salvage yards. A dry-state truck with a known history is worth paying for.

Spotting the real thing

Three different Jeeps wore 'Wagoneer' in the 1980s, woodgrain is easy to stick on, and restomod shops trade on 'Final Edition' badges, so the VIN and the year-specific details matter.

  1. ID
    SJ Grand Wagoneer vs XJ WagoneerThe 1984–90 XJ Wagoneer and Wagoneer Limited are compact unibody Cherokees with woodgrain; the Grand Wagoneer is the body-on-frame SJ on a 108.7 in wheelbase with a 6-lug 15x7 wheel. The 1993 Grand Wagoneer is a ZJ Grand Cherokee.
  2. ID
    VINCharacters 6–7 read 15 on a Grand Wagoneer. On 1984–86 VINs the 4th character is the engine (C = 258 six, N = 360 V8); on 1987–90 VINs N = 5.9 V8, the only engine offered. The 10th character is the model year.
  3. ID
    1989–91 tellsRear wiper/washer, overhead console with compass and outside temperature, infrared keyless entry, and alloy wheels with gunmetal-grey inlays instead of the earlier gold.
  4. ID
    1986-on interiorSquare-gauge dash, two-spoke steering wheel, plastic woodgrain glovebox door and adjustable front head restraints mark a 1986 or later truck; earlier trucks have the old dash and metal glovebox door.
  5. ID
    Final Edition badgeThe gold 'Final Edition' dash badge was a 1991-only option for trucks sold after February 27, 1991, so one on any earlier year was added later.

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
Front wheel bearing lubrication ↗1984 · NHTSA 84V-009Front wheel bearings might not have enough grease; covered 10,504 1984 Grand Wagoneers and J-trucks.
Contaminated brake fluid ↗1986 · NHTSA 85V-140Some 1986 Grand Wagoneers and J-trucks (230 vehicles) were filled with contaminated brake fluid, which can affect the whole braking system.
Cruise-control module ↗1987 · NHTSA 87V-022Cruise-control module could operate inconsistently.
Key-operated tailgate window ↗1984–1988 · NHTSA 87V-178The power tailgate glass could keep closing if the spring-loaded key switch failed to return to off; part of a 180,000-vehicle campaign back to 1970 Wagoneers.
The one you’ll own someday

For sale now

1984–1986 · USGrand Wagoneer (AMC era)
1987–1991 · USGrand Wagoneer (Chrysler era)
1963–1983 · USWagoneer (SJ, pre-Grand)
PART 04

Owning one

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

Post-purchase baseline

After you buy it

A Grand Wagoneer is at least 35 years old. Treat every fluid, rubber part and ignition part as original unless there are receipts. Capacities below are marked for confirmation because we couldn't find a sourced factory fill table. The parts catalogs split by year: 1984–86 versus 1987–91 (filters, ignition modules), and York versus Sanden A/C compressors (1978–88 versus 1989–91).

Engine oil & filterAMC 360 V8 · AMSOIL's 1989 lookup lists 5 qt with filter and 10W-30 or 10W-40 for most climates [CONFIRM IN MANUAL]Baseline now; then per your owner's manual

The filter changes by year: one for 1984–86, another for 1987–90, and a third for 1991. Order by model year.

Air filter & fuel filterStock air-cleaner element · inline fuel filterBaseline now; inspect every oil change
Spark plugs, wires, cap & rotor8 plugs · gap per underhood label [CONFIRM IN MANUAL]Baseline now
Ignition module (carry a spare)Early 1978–1987 / late 1988–1991Carry one

Electronic ignition modules are split by year; a spare in the glovebox is cheap insurance on a 30-plus-year-old system.

Coolant, thermostat, hoses & capAMSOIL's 1989 lookup lists 13.7 qt · coolant type [CONFIRM IN MANUAL]Flush and refill now
Automatic transmission (A727) fluid & filterATF · drain pan, new filter and gasket · AMSOIL's 1989 lookup lists about 4 qt for a pan drop and 8.6 qt total [CONFIRM IN MANUAL]Every 30,000 mi or 3 years with conventional fluid (Team Grand Wagoneer's filter-kit listing)
Transfer case (NP228 / NP229 / NP208)ATF-type fluid (per Team Grand Wagoneer) · AMSOIL's 1989 lookup lists 5.9 pints for the NP208/NP229 [CONFIRM IN MANUAL]Baseline now; Team Grand Wagoneer suggests every 50,000 mi in severe use, 100,000 mi in normal use (with its synthetic fluid)
Front & rear differentials75W-90 gear oil · limited-slip additive or LSD-rated oil for Trac-Lok axles · AMSOIL's 1989 lookup lists 2.7 pints front and 3 pints rear [CONFIRM IN MANUAL]Baseline now

The front is a Dana 44; the rear is an AMC or Dana 44 depending on year. Read the tag and use LSD-compatible oil if the truck has Trac-Lok (standard with Selec-Trac from 1986).

U-joints & driveshaftsGrease every zerk; inspect for playEvery oil change

Check the front axle U-joints at full lock and the driveshaft joints and slip yoke for clunks.

Front ball joints (Dana 44)Check for vertical and horizontal playInspect now

Worn joints show up as wander and uneven tire wear. Replace upper and lower together.

Power steering fluidPower-steering fluid · flush the old fluidBaseline now

Team Grand Wagoneer notes most owners never flush it. While you're there, check the steering box rag joint.

Brake fluid, pads & linesBrake fluid per the master-cylinder cap [CONFIRM IN MANUAL]Flush now; then every 2 years

Old steel lines on a salt-state truck deserve a hard look. A complete pre-bent stainless kit is available.

Accessory beltsAlternator/AC pair and power-steering belt (V8-360)Baseline now
Leaf springs & shocksStock-height leaf springs front and rearInspect now

Sagging springs and dead shocks make the truck wallow. Stock-height sets and full nitrogen shock sets are available.

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.

Rebuild the Motorcraft 2150 or convert to throttle-body injection
DIFFICULTY · 2 / 5 (rebuild) · 3 / 5 (TBI)TIME · ≈ An afternoon (rebuild) · A weekend (TBI)SHOP COST · TBI conversion about $2,000 in parts plus up to $1,000 labor (Hagerty)
SYMPTOMSHesitation, stumbling or stalling cold or hot, hard hot starts, fuel smell, poor idle. Hagerty's specialist blames the carburetor for about 40% of owner headaches.
THE FIXRule out vacuum leaks and ignition faults first: check every vacuum line and the distributor pickup and module. To rebuild, remove the carb, strip it on a clean bench, replace the base gasket, power valve and internal gaskets from a 2150 kit, set the float and choke pull-off to the kit's specs, and refit on a new base gasket and insulator. Converting to TBI means a throttle body with its own fuel pump, return line, sensors and harness. Most owners who keep the truck do it eventually, and it's the core of the Wagonmaster recipe.
TOOLS & PARTSCarb rebuild kit with specs · gasket scraper · carb cleaner · vacuum gauge · timing light · for TBI: fuel-line tools, wiring tools, laptop or handheld tuner per kit
Replace the rear main seal (AMC 360)
DIFFICULTY · 3 / 5TIME · ≈ A long daySHOP COST · $500–1,000 at a shop (Hagerty)
SYMPTOMSOil dripping from where the engine meets the transmission, with no obvious leak above it. Hagerty lists rear main leaks as a common 360 fault.
THE FIXRule out the valve covers, intake and oil-pressure sender first, because oil runs downhill to the bellhousing. Then drain the oil, support the engine, and drop the oil pan; on a full-size Jeep, front axle and crossmember clearance make this the hard part. Remove the rear main cap, pull both seal halves, clean the grooves, install the new seal, refit the cap to the factory torque spec, and refit the pan with a new gasket. Fill and check for leaks after a heat cycle.
TOOLS & PARTSFloor jack and stands · engine support · torque wrench · seal pick · RTV per seal instructions · factory service manual for torque specs [CONFIRM IN MANUAL]
Fix a dead power window (flex rack and motor)
DIFFICULTY · 2 / 5TIME · ≈ 2–3 hours per doorSHOP COST · Under $20 for a flex rack
SYMPTOMSYou can hear the motor run, but the glass doesn't move or moves in jerks. Hagerty says window flex tracks snap often on these trucks.
THE FIXRemove the door panel carefully, since water-damaged panels are common and the clips break. Peel back the vapor barrier and support the glass. Unbolt the motor and regulator assembly and inspect the plastic flex rack, which is the usual failure. Fit a new rack, lube the channel, fit new mounting grommets and screws, and check the motor's pigtail connector for corrosion before refitting the panel.
TOOLS & PARTSDoor-panel clip tool · glass holder · screwdrivers and sockets · white lithium grease
Revive the tailgate window
DIFFICULTY · 2 / 5TIME · ≈ 2–4 hoursSHOP COST · Parts plus labor
SYMPTOMSThe rear glass won't go down, so the interior tailgate handle can't be reached. YourMechanic says the tailgate window is 'notorious for failing'.
THE FIXTest the dash switch and the key switch in the tailgate first; Hagerty says the rear switch often dies. If the motor hums but the glass doesn't move, open the tailgate inner panel (lower the glass by hand with the manual crank if you need to) and check the lifter cushions and glass channels for binding. Replace worn cushions and channels, lube the tracks, and fit a new switch if needed.
TOOLS & PARTSTrim tools · test light or multimeter · sockets · silicone or lithium lube
Patch floors, rockers and lower quarters
DIFFICULTY · 4 / 5TIME · ≈ Several weekendsSHOP COST · Parts plus bodywork labor
SYMPTOMSWet or crunchy carpet, holes under the driver's floor mat, bubbling under the woodgrain, rotten rockers that can let exhaust into the cabin.
THE FIXPull the seats and carpet and wire-brush everything so you can see the full extent. Cut out rot back to clean metal, then trial-fit and weld in repair sections: front driver's and passenger's floor, rear sections, rockers, dog legs and lower quarters. Seam-seal and undercoat. On the outside, remove the woodgrain before welding and put down fresh vinyl afterward.
TOOLS & PARTSMIG welder · cut-off wheel · spot-weld drill · clamps · weld-through primer · seam sealer
Drop the fuel tank and replace the skid plate and straps
DIFFICULTY · 3 / 5TIME · ≈ A daySHOP COST · Parts plus labor
SYMPTOMSRust where the tank meets the body, a sagging or perforated skid plate, fuel smell, a sending unit that reads wrong. Both Hagerty and YourMechanic name this area.
THE FIXRun the tank nearly empty and disconnect the battery. Support the skid plate and tank with a jack, remove the skid-plate bolts and straps, disconnect the filler and vent hoses and the sender wiring, and lower the assembly. Inspect the frame and body above it. Treat the rust, then refit with a new skid plate (or the master kit), insulator mat, straps and fresh hardware.
TOOLS & PARTSTransmission jack or floor jack with board · penetrating oil · fuel-line clamps · sockets
Selec-Trac won't engage: vacuum system and transfer-case service
DIFFICULTY · 2 / 5TIME · ≈ 2–3 hoursSHOP COST · Parts plus labor
SYMPTOMSThe dash 2WD/4WD control does nothing, the truck stays in one mode, or 4WD drops out. Hagerty says to check that 4WD engages on the fly; seals leak with age.
THE FIXSelec-Trac uses vacuum to shift between 2WD and 4WD. Check the vacuum lines from the engine to the reservoir, the dash switch and the transfer-case actuator for cracks or disconnected hoses, and test with a hand vacuum pump. On 1984–86 trucks, the transfer-case vacuum switch is a known replacement part. Fix any seal leaks at the yokes, then drain and refill the transfer case (Team Grand Wagoneer recommends a synthetic ATF-type fluid).
TOOLS & PARTSHand vacuum pump · vacuum hose · sockets · drain pan · fluid pump

Manuals & documentation

Asked on every forum

Jeep Grand Wagoneer (SJ) questions, answered

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

We couldn't find a forum consensus we trust for the SJ, so we won't guess. The factory size is P235/75R15 on 15x7 six-lug alloys (1989 spec). Anything larger should be test-fitted at full lock and with the suspension compressed. Team Grand Wagoneer sells a 3-inch lift kit with springs and shocks for owners who want more. Running bigger tires on yours? Tell us through Show Us Your Rig.

SOURCE · WAGONEER WORLD
How much power does the 360 V8 make?

It depends on the source. Hagerty quotes 140 hp and 280 lb-ft, and Offroaders.com and Wikipedia's AMC V8 table both give 144 hp (280 lb-ft) for the 1991 two-barrel 360. Either way, the torque is what moves it. The 360 is a tall-deck AMC engine. Chrysler kept building it until 1991, changing only the casting from '360' to '5.9L'.

SOURCE · HAGERTY · WIKIPEDIA
What fuel economy should I expect?

Not much. Wikipedia cites a combined 11 mpg, and Hagerty says single digits in town and about a dozen on the highway with the V8. Fuel prices after the 1990 oil shock helped kill the truck. TBI conversions are said to help, but don't expect miracles from a carbureted-era V8 in a 4,000-plus-pound wagon.

SOURCE · WIKIPEDIA · HAGERTY
How much can it tow?

Jeep's 1989 spec lists 5,000 lb maximum trailer weight (750 lb tongue) with the Class III Package B, and 3,500 lb (350 lb tongue) with the Class I and II Package A.

SOURCE · WAGONEER WORLD
Is it full-time 4WD?

Most are Selec-Trac: an NP228 or NP229 (the 229 adds a viscous coupling) with a dash control that shifts between 2WD and 4WD on the move using vacuum. Offroaders.com says some 1984–88 Grand Wagoneers used the part-time NP208 instead. Going between 4-High and 4-Low takes neutral and a crawl of under 5 mph.

SOURCE · OFFROADERS.COM · WIKIPEDIA
Which years should I buy?

1989–91, if you can. Those years got better rust-proofing (electrocoat primer), base-clear paint, an improved A/C compressor, an overhead console, keyless entry and a rear wiper. The 1991 Final Edition carries a premium. Hagerty's specialist adds that low mileage, under about 100,000, is the safest buy.

SOURCE · WIKIPEDIA · HAGERTY
Carburetor or fuel injection?

Every Grand Wagoneer left the factory with a carburetor, a two-barrel Motorcraft on the 360. Throttle-body injection kits are the most common upgrade. Hagerty puts the conversion at about $2,000 in parts and up to $1,000 in labor, and Wagonmaster builds its trucks around a Howell TBI system.

SOURCE · HAGERTY · DRIVINGLINE
What are they worth?

Values rose for years. In one report, Hagerty listed a 1991 at $36,900 in #2 condition and $62,200 in #1, and said a nice #3 driver shouldn't cost much more than $20,000. Restomods from Wagonmaster or Classic Gentleman were $40,000–80,000 in 2019. These figures are dated, so check current Hagerty valuations and recent BaT results.

SOURCE · HAGERTY · DRIVINGLINE
Is this the same as the Wagoneer Limited (XJ)?

No. From 1984 to 1990 Jeep also sold a compact, unibody Wagoneer based on the Cherokee XJ, with woodgrain decals. The Grand Wagoneer is the full-size, body-on-frame SJ.

SOURCE · WIKIPEDIA
Can I still get parts?

Mostly. Specialists such as Team Grand Wagoneer and BJ's Off Road stock everything from floor pans to woodgrain vinyl. But Hagerty's specialist estimates about 20% of the parts a restoration needs come from salvage yards, and front fenders are no longer available.

SOURCE · HAGERTY
Can I replace the woodgrain?

Yes. It's vinyl, not wood. The 1987–91 trucks use 'marine teak' and earlier trucks the cherry-oak style, and replacement kits are sold for both. Fix any rust under the old vinyl first, because bubbles usually mean the metal is rotting.

SOURCE · TEAM GRAND WAGONEER · YOURMECHANIC
PART 05

Building one

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

Common modifications & who does them

FUEL INJECTIONThe single most popular upgrade: easier starts, smoother running and an end to carburetor tinkering.
SUSPENSION & LIFTFresh leaf springs and shocks fix the wallow. A modest lift makes room for slightly bigger tires on gravel and snow.
COOLINGA carbureted V8, a 30-plus-year-old radiator and a tow hitch make a recipe for boiling over. Heavy-duty radiators and high-flow pumps are cheap insurance.
BRAKESStainless lines and modern pads help a heavy wagon stop on old drum-rear brakes.
RESTOMOD BUILDERSIf you'd rather buy one finished, specialist builders restore and update trucks for about the price of a new SUV.
FULL-SIZE JEEP PARTS SPECIALISTSSJ-specific sheet metal, trim, weatherstrip and drivetrain parts that general parts stores no longer carry.

Clubs & events

Resources

Channels, accounts & forums

All Jeep resources →
SourcesWikipedia — Jeep Wagoneer (SJ)Wikipedia — AMC V8 engine (360)Hagerty — Your definitive 1984–91 Jeep Grand Wagoneer buyer's guideHagerty — 1984–91 Jeep Grand Wagoneer prices are on an ever-rising tearHagerty — 1984 Jeep Grand Wagoneer valuationWagoneer World — Technical specs (1989 Grand Wagoneer)Offroaders.com — Jeep Grand WagoneerOffroaders.com — Factory Jeep transfer casesYourMechanic — How to choose a Jeep Grand WagoneerDrivingLine — The ultimate restomod Jeep Grand Wagoneers (2019)Team Grand Wagoneer — parts catalog and product notesAMSOIL — 1989 Jeep Grand Wagoneer 5.9L lubricant and capacity lookupWikipedia — American Motors Corporation (Chrysler purchase, March 1987)Team Grand Wagoneer — A727 filter kit (service interval) and 2150 carburetor kit listingsWikipedia — Jeep Wagoneer (SJ)WagoneerWorld — technical specs (1989 Grand Wagoneer)Wagoneers.com — SJ engines by yearQuadratec — Jeep wheel bolt patterns and lug nut torque specsOffroaders.com — 1981–1986 CJ & J-Series VIN decoderTireSize.com — 1988 Jeep Grand Wagoneer original tire sizeNHTSA recalls API — Jeep GRAND WAGONEER 1984NHTSA recalls API — Jeep GRAND WAGONEER 1986NHTSA recalls API — Jeep GRAND WAGONEER 1987Bring a Trailer — Jeep SJ Grand Wagoneer sold resultsQuadratec — Haynes manual for 84–91 Wagoneer & Grand WagoneerRed Rock 4-Wheelers — Easter Jeep Safari