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1998 Jeep Wrangler CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Jeep REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- 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
A/C & HEATER SERVICE PROCEDURES FOR 1998 Jeep Wrangler AUTOMOBILES
Air Bag System Precautions -> DaimlerChrysler -> Arming -> 1990-97 -> 1994-96 Cherokee -> 1998-2004 -> Except 1994-96 Cherokee -> Light Truck & Vans -> Passenger Cars
Vehicle: 1998 Jeep Wrangler 4.0 L6 GAS
Passenger Cars
1990-97
- Ensure no one is inside vehicle and ignition switch is in Lock position.
- Connect battery ground cable.
- Turn ignition switch to On position from passenger side of vehicle.
- The SRS warning lamp should light for six to eight seconds, then remain off for at least 45 seconds to indicate if SRS is functioning properly.
1998-2004
- Ensure no one is inside vehicle and ignition switch is in Lock position.
- Connect battery ground or remote cable or terminal.
- Turn ignition On from a safe position be...
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BRAKE SERVICE PROCEDURES FOR 1998 Jeep Wrangler AUTOMOBILES
Drum Brakes -> Jeep -> Tightening Specifications
Vehicle: 1998 Jeep Wrangler 2.5 L4 GAS
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1998 Jeep Wrangler AUTOMOBILES
DaimlerChrysler Corp./Jeep Light Trucks, SUVs & Vans -> Fuel Pressure Relief -> 1993-06 Grand Cherokee & 1993 Grand Wagoneer, 1988-01 Cherokee, Comanche, Grand Cherokee, Wagoneer, Wrangler -> Models Less Fuel Pressure Test Port -> Models w/Fuel Pressure Test Port
Vehicle: 1998 Jeep Wrangler 4.0 L6 GAS
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.
Prior to disconnecting fuel lines, the fuel system pressure must be relieved to prevent accidental spray of fuel.
After the battery has been disconnected and reconnected, some abnormal driveability symptoms may occur. The vehicle may need to be driven while the vehicle relearns its adaptive strategy...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1998 Jeep Wrangler AUTOMOBILES
DRIVESHAFT, Replace -> Front -> Rear
Vehicle: 1998 Jeep Wrangler 2.5 L4 GAS
Front
- With vehicle in neutral, position vehicle on hoist.
- Remove skid plate if equipped to gain access to propeller shaft.
- Mark a line across axle pinion flange, propeller shaft, flange yoke and transfer case for installation reference.
- Remove U-joint strap bolts at pinion shaft yoke.
- Remove transfer case yoke bolts.
- Push rear of propeller shaft forward to clear transfer case yoke.
- Remove propeller shaft from vehicle.
- Reverse procedure to install, noting the following:
- Align reference marks.
- Torque U-joint strap bolts t...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1998 Jeep Wrangler AUTOMOBILES
Starter, Replace
Vehicle: 1998 Jeep Wrangler 2.5 L4 GAS
- Disconnect battery ground cable.
- Raise and support vehicle.
- Remove two bolts that secure starter motor to engine block.
- Lower starter motor to gain access to solenoid harness connector eyelet to solenoid terminal retaining nut, then remove nut and wiring from starter.
- Remove battery cable harness connector eyelet to solenoid battery termi...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1998 Jeep Wrangler AUTOMOBILES
Chrysler LLC Trucks -> Electronic Throttle Control Indicator ->
Vehicle: 1998 Jeep Wrangler 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 1998 Jeep Wrangler AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 1998 Jeep Wrangler 4.0 L6 GAS
Inlet
- Drain cooling system into a suitable container.
- Reposition heater core inlet hose clamp at thermostat housing.
- Remove hose from thermostat housing.
- Reposition heater hose inlet clamp at heater core.
- Remove heater inlet hose from heater core.
- Remove hose from vehicle.
- Reverse procedu...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1998 Jeep Wrangler AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1998 Jeep Wrangler 4.0 L6 GAS
Belt tension is adjusted at the power steering pump or idler pulley if not equipped with power steering.
- Loosen power steering or idler pulley rear mounting bolts.
- Loosen power steering pump ...
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COMPONENT LOCATION DIAGRAMS FOR 1998 Jeep Wrangler AUTOMOBILES
Component location diagrams for most 1998 Jeep Wrangler cars and light trucks sold in the U.S. from 1990+.
Rear Of Engine Compartment Diagram for 1998 Jeep Wrangler 4.0 L6 GAS Components on diagram: |
Engine Grounds Diagram for 1998 Jeep Wrangler 4.0 L6 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 1998 Jeep Wrangler AUTOMOBILES
OEM drawn wiring diagrams for most 1998 Jeep Wrangler cars and light trucks sold in the U.S.
1998 Jeep Wrangler 2.5 L4 GAS Wiring Diagram Components on diagram: |
1998 Jeep Wrangler 2.5 L4 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1998 Jeep Wrangler AUTOMOBILES
OEM TSB listings for most 1998 Jeep Wrangler cars and light trucks sold in the U.S. from 1985+.
Document: RECALL - Mopar Value Line Catalytic Converters Vehicle: 1998 Jeep Wrangler 2.5 L4 GAS Auto Systems: |
Document: AUTOMATIC TRANSMISSION DIAGNOSTIC TEARDOWN PROCEDURE - REVISED Vehicle: 1998 Jeep Wrangler 2.5 L4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1998 Jeep Wrangler AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1998 Jeep Wrangler 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 1998 Jeep Wrangler 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 1998 Jeep Wrangler 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 1998 Jeep Wrangler 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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