The service and repair manual for the 1990 Jeep Comanche — 2.5L I4 and 4.0L I6 engines, 3 trims. Matched to this exact model year, so the specifications and sequences are the ones Jeep published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 1990 |
|---|---|
| Engines | 2.5L I4 — OHV 4.0L I6 — OHV |
| Trims | Base Standard Cab Pickup · Eliminator Standard Cab Pickup · Pioneer Standard Cab Pickup |
| Federal record | 2 recalls · 15 complaints · 10 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 1990 Comanche manual
03 / ContentsSections in the manual
- Quick Lookups 65
- Engine Performance 779
- Accessories & Equipment 171
- General Information 1,398
- Body & Frame 18
- Heating, Ventilation & A/C (HVAC) 142
- Brakes 67
- Maintenance 57
- Drivelines & Axles 76
- Steering 150
- Electrical 162
- Suspension 49
- Engine Mechanical 162
- Transmission 116
- Except Grand Wagoneer 23
- Grand Wagoneer 13
- Brake Line-to-Wheel Cylinder 13
- Wheel Cylinder Bolts 18
- Wheel Lug Nuts 75
- Brake Line-to-Master Cylinder 180
04 / Known issuesRecalls on federal record for the 1990 Comanche
- Service Brakes, Hydraulic — foundation components › disc › rotor · 98V005000The reduced strength can allow the cast iron wear surface to separate from the hub, reducing the bra.
- Vehicle Speed Control — cruise control · 90V177000High engine idle when car is first placed in gear couldresult in unexpected acceleration.
Owners have filed 15 complaints and Jeep has issued 10 technical service bulletins for the 1990 Comanche. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 1990 Comanche manual
Is this manual specific to the 1990 Comanche?
Yes. It is the OEM manual matched to the 1990 model year, covering the 2.5L I4 and 4.0L I6 across the Base Standard Cab Pickup, Eliminator Standard Cab Pickup, Pioneer Standard Cab Pickup trims. Specifications and procedure sequences are the ones Jeep published for this year.
What 1990 Comanche problems does it help with?
2 recalls are on federal record for the 1990 Comanche, covering service brakes, hydraulic, vehicle speed control. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Jeep dealers.
Does it include 1990 Comanche wiring diagrams?
Yes — the complete wiring diagrams for the 1990 build, alongside repair procedures, specifications and diagnostics.
Is it a subscription?
No. $29.99 once and the manual is yours. It is a digital manual — nothing ships; access details arrive by email after checkout and it works on any device.
RelatedOther Comanche years and 1990 Jeep models
1992 Comanche · 1991 Comanche · 1989 Comanche · 1988 Comanche · 1987 Comanche · 1986 Comanche · all 7 years
1990 Jeep Cherokee · 1990 Jeep Grand Wagoneer · 1990 Jeep Wagoneer · 1990 Jeep Wrangler · every 1990 model