BOXY TRUCKS
Common problems · 1998–2004

Discovery 2 problems: 8 things to check

The problems owners and specialists flag most on the Land Rover Discovery Series II, the repairs they end up doing and what those cost, plus the years and recalls to watch. Sourced, not scraped.

Read the full Discovery 2 guideYears to avoidBiggest tireSpecs & fluids

Discovery 2 problems to check before you buy

  1. Rear chassis and crossmemberThe back of the frame, around the fuel tank and the rear crossmember, rots from the inside out where mud and water collect. Look closely at the rear chassis legs, the crossmember and the suspension hangers, because owners report hangers collapsing. Replacement rear quarter and half chassis sections exist, and so do whole galvanised frames, which tells you how common this is.
  2. Sills, arches, boot floor and body mountsOne LandyZone member's under-seal inspection turned up rotten footwells, inner and outer sills, all four arches, the boot floor and both rear body mounts, with a £5,040 repair quote. Expect to find at least twice the rust you can see once you start cutting.
  3. Td5 head, fuel in the oilFamous Four says Td5 cylinder-head failure is now quite common and expensive. Check the dipstick: a level that is too high suggests diesel in the oil. Failed injector sealing washers cause the same symptom and are much cheaper to fix, so diagnose before you condemn the head.
  4. Oil in the ECU plugLift the ECU out of its tray by the battery and look at the connectors. Oil there means the injector harness seals under the rocker cover have failed, and in time that causes misfires and poor starting. The fix is a cheap harness, but neglected trucks may also have oil in the main engine loom.
  5. Diesel leak at the back of the Td5Diesel weeping from the rear of the cylinder head on the driver's side is usually the fuel pressure regulator. Fix it quickly: Famous Four warns that leaking fuel can drip onto the starter motor and kill it.
  6. V8 cooling and head gasketsAsk for head-gasket and cooling records. An Expedition Portal buyer's guide says gaskets often go between 50,000 and 70,000 miles and advises avoiding trucks with a compromised cooling system. Owners also report slipped or cracked cylinder liners, especially on 2003–04 4.6s, which mean an engine rebuild with top-hat liners or a replacement block.
  7. SLS, ACE and the 'three amigos'A tail that sags overnight means leaking SLS air springs. Oil on the chassis rails or around the anti-roll bars means ACE leaks, which Famous Four calls 'very expensive to rectify'. ABS, TC and HDC lights together (the 'three amigos') are often a dirty or failed wheel sensor, but can be a failing ABS modulator costing thousands.
  8. Centre diff lock and propshaftsPre-facelift trucks have the lock in the transfer box but often no lever, unless someone has fitted one. On the test drive, a severe shimmy points to worn propshaft joints; the front shaft's double-cardan joint has non-greasable UJs from the factory, and the rear rubber coupling cracks.

The repairs Discovery 2 owners end up doing

REPAIRSYMPTOMSDIFFICULTYTIMECOST
Td5 injector harness replacementOil inside the red ECU plug, poor starting, misfires or rough running, injector fault codes.2 / 5≈ 2 hoursHarness about £30 (discovery2.co.uk); ECU-plug cleaning included
Td5 oil pump bolt (preventive)None until it fails: the bolt holding the oil-pump sprocket can loosen and fall out, and the engine is destroyed. Early engines are most at risk, but owners have found loose bolts on 2003–04 trucks too.3 / 5Half a dayA bolt, a sump gasket and RTV
Td5 fuel pressure regulatorDiesel leaking from the back of the engine on the driver's side; fuel smell.2 / 5≈ 1 hourRegulator about £80 (discovery2.co.uk, 2008)
SLS air springs, or convert to coilsThe rear sags overnight or when parked, then pumps back up; the compressor runs for long periods. Ignored leaks burn out the compressor.2 / 5≈ 2–3 hoursA pair of air springs, or a coil conversion kit
ACE leaks: pipes, filter or deleteHydraulic fluid on the chassis or around the anti-roll bars, ACE warning, body roll returning. Pipes rust through and the aluminium valve block pits until its seals fail.3 / 5Half a day to a weekendPipes are cheap; one owner's previous owner spent about $4,000 on the system
Three amigos: ABS sensors and hubsABS, TC and HDC warning lights on together, sometimes intermittently.2 / 5≈ 1–3 hoursA sensor, or a front hub assembly (about £160–260, per discovery2.co.uk)
V8 head gaskets and cooling refreshCoolant loss, overheating at idle, coolant weeping at the head-to-block joint, mayonnaise under the filler cap.4 / 5A weekend, plus machine-shop timeOne US owner paid about $1,250 at an independent shop, including $640 labour and head skimming
Rear chassis and crossmember repairFlaking or holed metal at the rear crossmember, rear chassis legs and around the fuel tank; collapsed suspension hangers; MOT failures.4 / 5Several weekends, or a week on a rampLandyZone members put a new chassis plus the work at close to £10,000; patch repairs much less

Each repair links to a step-by-step guide with tools, part numbers and where to buy the parts.

Years with known problems

YEARSFLAGWHAT TO KNOW
1998–2000BewareEarly Td5 oil-pump drive and head-stud ('head shuffle') problems, fixed within two years; ACE pipe and idler-pulley recalls
2003–04BewareUS owners report slipped and cracked liners on late 4.0 and especially 4.6 blocks

Every Discovery 2 model year, with the best ones to buy →

Discovery 2 recalls and service bulletins

Check any VIN for open recalls at nhtsa.gov/recalls ↗, or see the recall tracker.

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Take the printable Discovery 2 inspection checklist: every check on this page plus the model-specific ones, on one sheet. Get the checklist →

Sourced from owners, specialists and factory documents; full sources are on the Discovery 2 guide. Verify torque figures and procedures against the factory service manual (disclaimer).

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