Segment:
Compact Pickup Truck
Reputation:
Known for ruggedness, off-road capability, and Jeep's iconic styling.
Competitors:
Toyota Tacoma, Nissan Hardbody, Ford Ranger, Chevrolet S-10
Platform Sharing:
Utilized the Jeep Cherokee (XJ) platform, providing a unique unibody construction for a pickup of its era.
Powertrain Options:
Renowned for the durable 4.0L inline-six engine, offering strong performance.
Off Road Capability:
Jeep's signature four-wheel-drive systems (Command-Trac and Selec-Trac) and available robust axles.
Engine Mechanical:
Engine assembly, disassembly, cylinder head, block, pistons, crankshaft, camshaft, timing system, lubrication system, cooling system
Engine Electrical:
Ignition system, fuel injection (MPI), starting system, charging system, sensors, actuators, ECU diagnostics
Transmission Manual:
Clutch, gearbox overhaul, gear selection, synchronizers, shifting mechanisms
Transmission Automatic:
Transmission overhaul, hydraulic control, torque converter, electronic control module (if applicable), fluid service
Drivetrain 4Wd:
Transfer case (NP242 Selec-Trac, NP231 Command-Trac), front axle, rear axle, drive shafts, U-joints, differential service
Suspension:
Front and rear suspension, leaf springs, coil springs, shock absorbers, control arms, bushings, alignment specifications
Steering:
Power steering system, steering gear, steering column, tie rods, ball joints
Brakes:
Front disc brakes, rear drum brakes, hydraulic system, parking brake, ABS (if equipped), bleeding procedures, component replacement
Electrical Body:
Wiring diagrams, lighting, power windows, door locks, interior/exterior trim, HVAC system, instrumentation
Body Chassis:
Frame construction, body panels, doors, hood, tailgate, bumpers, corrosion protection
Preventative Maintenance:
Scheduled maintenance, fluid changes, filter replacements, lubrication points, inspections
Diagnostic Troubleshooting:
Systematic troubleshooting guides, symptom-based diagnostics, fault code interpretation
Component Replacement:
Step-by-step instructions for replacing major and minor components
Rebuilding Overhaul:
Detailed procedures for engine, transmission, and transfer case rebuilds
Specifications Data:
Torque values, clearances, tolerances, fluid capacities, wiring diagrams, diagnostic trouble codes (DTCs)
Depth:
Comprehensive: Covers everything from routine maintenance to full engine and transmission rebuilds, including advanced diagnostics.
Engine 1:
4.0L (242 cu in) OHV Inline-6
Engine 1 Fuel System:
Multi-Point Fuel Injection (MPI)
Engine 1 Horsepower Approx:
170-180 hp @ 4500-4750 rpm
Engine 1 Torque Approx:
220-230 lb-ft @ 3000-3250 rpm
Engine 2:
2.5L (150 cu in) OHV Inline-4
Engine 2 Fuel System:
Multi-Point Fuel Injection (MPI)
Engine 2 Horsepower Approx:
125 hp @ 5000 rpm
Engine 2 Torque Approx:
150 lb-ft @ 3000 rpm
Fuel Type:
Unleaded gasoline
Fuel Pump Pressure Psi:
31-43 psi (4.0L) / 31-39 psi (2.5L)
Transmission 1:
5-Speed Manual (Aisin AX-5)
Transmission 2:
3-Speed Automatic (Chrysler 32RH)
Transmission 3:
4-Speed Automatic (Chrysler 42RE - less common for Comanche, more for Grand Cherokee XJ)
Transmission Fluid Type Auto:
ATF+3 or ATF+4 (Check manual for specific recommendation)
Transmission Fluid Type Manual:
API GL-5 gear oil (e.g., SAE 75W-90)
Oil Change Interval Miles:
3,000 - 5,000 miles or 3-6 months
Transmission Fluid Change Miles:
30,000 - 50,000 miles (automatic), 50,000 - 70,000 miles (manual)
Coolant Change Interval Miles:
30,000 - 50,000 miles or 2-3 years
Engine Oil Type 4.0L:
API SJ or SL, SAE 10W-30 or 10W-40 (Check manual for specific temp range)
Engine Oil Capacity 4.0L Qts:
5.0 quarts (with filter)
Coolant Type:
Conventional Green Ethylene Glycol
Common Issue 1:
Cracking of the exhaust manifold (especially on 4.0L) due to heat cycles.
Common Issue 2:
Leaking valve cover gasket and oil pan gasket.
Common Issue 3:
Chrysler automatic transmission (42RE/32RH) occasional hard shifting or delayed engagement.
Common Issue 4:
Rust in common areas like rocker panels, rear quarter panels, and tailgate.
Common Issue 5:
Fuel injector O-ring degradation leading to fuel leaks.
Jeep Legacy:
Jeep has a long history of producing rugged, off-road capable vehicles dating back to World War II.
Comanche Introduction:
Introduced for the 1986 model year as Jeep's compact pickup truck offering.
Comanche Relation To Xj:
Based on the Jeep Cherokee (XJ) platform, it shared much of its mechanicals and styling, offering a unique unibody construction for its class.
Comanche Production Years:
1986-1992 (with the 1993 model year being the last for some markets or configurations, though production ceased earlier for most).
Manufacturer:
American Motors Corporation (AMC) until 1987, then Chrysler Corporation.
