The service and repair manual for the 1991 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 | 1991 |
|---|---|
| Engines | 2.5L I4 — OHV 4.0L I6 — OHV |
| Trims | Base Standard Cab Pickup · Eliminator Standard Cab Pickup · Pioneer Standard Cab Pickup |
| Federal record | 1 recall · 6 complaints · 10 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 1991 Comanche manual
03 / ContentsSections in the manual
- Quick Lookups 65
- General Information 1,399
- Accessories & Equipment 159
- Heating, Ventilation & A/C (HVAC) 154
- Brakes 35
- Maintenance 57
- Drivelines & Axles 83
- Steering 96
- Electrical 159
- Suspension 50
- Engine Mechanical 111
- Transmission 219
- Engine Performance 556
- Steering Wheel Nut 25
- Turn Signal Mounting Screws 35
04 / Known issuesRecalls on federal record for the 1991 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.
Owners have filed 6 complaints and Jeep has issued 10 technical service bulletins for the 1991 Comanche. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 1991 Comanche manual
Is this manual specific to the 1991 Comanche?
Yes. It is the OEM manual matched to the 1991 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 1991 Comanche problems does it help with?
1 recall is on federal record for the 1991 Comanche, covering service brakes, hydraulic. 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 1991 Comanche wiring diagrams?
Yes — the complete wiring diagrams for the 1991 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 1991 Jeep models
1992 Comanche · 1990 Comanche · 1989 Comanche · 1988 Comanche · 1987 Comanche · 1986 Comanche · all 7 years
1991 Jeep Cherokee · 1991 Jeep Grand Wagoneer · 1991 Jeep Wagoneer · 1991 Jeep Wrangler · every 1991 model