Jeep CJ Series: problems, complaints, bulletins
Summary for the Jeep CJ Series across 2 model years: 4 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
| Year | Owner complaints | involving a crash | Technical service bulletins (TSB) | YouTube repair videos |
|---|---|---|---|---|
| 9999 | 2 | 0 | 0 | 0 |
| 1986 | 2 | 0 | 0 | 0 |
What fails most often
- 1 Engine and cooling 50% of all complaints
- 2 Fuel system 25% of all complaints
- 3 Powertrain 25% of all complaints
- Engine and cooling: 2 complaints (50% of all).
- Fuel system: 1 complaints (25% of all).
- Powertrain: 1 complaints (25% of all).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine and cooling | 2 | 0 | 0 |
| Fuel system | 1 | 0 | 0 |
| Powertrain | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Tl contact owns a 1987 jeep j10. When placing fuel in the vehicle, the gas would leak to the ground. The mechanic stated that the vehicle needed a fuel filler hose (part number j5361182) and fuel tank vent hose (part number j5361188). The manufacturer no longer makes the parts. The vin was unavailable.
Consumer went through state inspection where a crack in exhaust manifold was discovered. Dealer stated there were no recalls for this vehicle.
Rear axle was cracked. Dealership was aware of problem. Vehicle formed an unusual axle tubing crack, an auto expert stated to consumer: the axle housing crack was unique and unusual as axle housing cracks occur, if at all, where the axle tubing is joined at the axle center and not on the tubing itself, vehicle can…
On two ocassions jeep was at a gas station and caught on fire from the engine.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
What to check before buying
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Fuel system. Fuel smell, leaks, rough running, fuel-system codes.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Other models of this make
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.