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1990 Jeep Comanche CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Jeep REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
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- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1990 Jeep Comanche car and truck
repair procedures including Jeep engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your Jeep Comanche automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 1990 Jeep Comanche AUTOMOBILES
A/C & Cooling System Maintenance -> DaimlerChrysler Corp. -> Jeep
Vehicle: 1990 Jeep Comanche Eliminator 4.0 L6 GAS
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BRAKE SERVICE PROCEDURES FOR 1990 Jeep Comanche AUTOMOBILES
DISC BRAKES, CHRYSLER CORP. -> Type 7-Single Piston Sliding Caliper, Jeep -> BRAKE PAD, Replace -> CJ-7, Cherokee, Comanche, Scrambler, Wagoneer & Wrangler -> Grand Wagoneer & J-Series Truck -> Grand Wagoner & J-Series Truck -> INSTALLATION -> REMOVAL
Vehicle: 1990 Jeep Comanche 2.5 L4 GAS
REMOVAL
Grand Wagoneer & J-Series Truck
- Unfasten caliper as previously described, leaving brake hose attached to caliper. Suspend caliper from suspension spring. Do not let caliper hang by hydraulic line.
- Remove inboard and outboard brake pads from caliper.
- Remove support spring from inboard pad, noting position of spring for assembly reference.
- Remove sleeves and rubber bushings from mounting bolt bores in caliper mounting ears.
- Clean mounting bolts, bolt core and bushing grooves in caliper mounting ears with suitable solvent. Do not use abrasives to clean or polish the mounting b...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1990 Jeep Comanche AUTOMOBILES
DaimlerChrysler Corp./Jeep Light Trucks, SUVs & Vans -> Fuel Filter Scheduled Maintenance -> 1985-92 Jeep w/Gasoline Engine -> Normal Service -> Severe Service
Vehicle: 1990 Jeep Comanche 4.0 L6 GAS
Normal Service
Replace eve...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1990 Jeep Comanche AUTOMOBILES
DRIVESHAFT, Replace -> Front -> Rear
Vehicle: 1990 Jeep Comanche 2.5 L4 GAS
Front
- Hoist and support vehicle on safety stands.
- Scribe alignment marks on yokes at transfer case. Place marks at pinion shaft and at each end of propeller shaft. These marks will be used for installation reference.
- Remove universal joint strap bolts at pinion shaft yoke.
- Disconnect propeller shaft at transfer case and remove propeller shaft.
- Reverse procedure to install, noting the following:
- Torque universal joint strap/clamp bolts at axle yoke to 14 ft. lbs.
- Torque flange to transfer case bolts to 20 ft. lbs.
Rear
- Shif...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1990 Jeep Comanche AUTOMOBILES
Starter, Replace
Vehicle: 1990 Jeep Comanche 2.5 L4 GAS
- Disconnect battery ground cable.
- Remove starter to flywheel housing and rear bracket to engine or transaxle attaching bolts.
- Remove heat shield clamp and heat shield, if required.
- Disconnect starter cable a...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1990 Jeep Comanche AUTOMOBILES
Chrysler LLC Trucks -> Electronic Throttle Control Indicator ->
Vehicle: 1990 Jeep Comanche Pioneer 4.0 L6 GAS
When the ignition is turned On, the lamp will light for approximately 6-12 seconds as a bulb inspection. If the lamp is illuminated with the engine running, the vehicle is usually drivable but the electronic throttle system must be diagnosed and servic...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1990 Jeep Comanche AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 1990 Jeep Comanche Eliminator 4.0 L6 GAS
Inlet
- Drain cooling system into a suitable container.
- Reposition hose clamp at heater core and remove hose.
- Reposition hose clamp at intake manifold and remove hose.
- Remove hose from vehicle.
- Reverse procedure...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1990 Jeep Comanche AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1990 Jeep Comanche 4.0 L6 GAS
- Disconnect battery ground cable.
- Loosen power steering pump rear mounting bolts, piv...
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COMPONENT LOCATION DIAGRAMS FOR 1990 Jeep Comanche AUTOMOBILES
Component location diagrams for most 1990 Jeep Comanche cars and light trucks sold in the U.S. from 1990+.
 Body Harness Splices Diagram for 1990 Jeep Comanche 4.0 L6 GASComponents on diagram: |
 Underbody Components Diagram for 1990 Jeep Comanche 4.0 L6 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 1990 Jeep Comanche AUTOMOBILES
OEM drawn wiring diagrams for most 1990 Jeep Comanche cars and light trucks sold in the U.S.
 1990 Jeep Comanche Pioneer 2.5 L4 GAS Wiring DiagramComponents on diagram: |
 1990 Jeep Comanche Eliminator 4.0 L6 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1990 Jeep Comanche AUTOMOBILES
OEM TSB listings for most 1990 Jeep Comanche cars and light trucks sold in the U.S. from 1985+.
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Document: WINDSHIELD WIPER BLADE / ELEMENT MAINTENANCE Vehicle: 1990 Jeep Comanche 2.5 L4 GAS Auto Systems: |
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Document: AUTOMATIC TRANSMISSION FLUID USAGE - ATF+4 (TYPE 9602) - REVISED Vehicle: 1990 Jeep Comanche 2.5 L4 GAS Symptoms: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1990 Jeep Comanche AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 Jeep Comanche cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 1990 Jeep Comanche cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 1990 Jeep Comanche cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 1990 Jeep Comanche cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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