Jeep 1988 Wrangler YJ Manuals
Manuals and User Guides for Jeep 1988 Wrangler YJ. We have 1 Jeep 1988 Wrangler YJ manual available for free PDF download: Workshop Manual
Jeep 1988 Wrangler YJ Workshop Manual (1905 pages)
Brand: Jeep
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Category: Automobile
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Size: 58.73 MB
Table of Contents
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Contents3
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Front Towing17
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Rear Towing18
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Engine Oil20
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Tools21
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Products24
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Installation39
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Removal41
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Adjustment41
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Hole Repair48
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Glove Box55
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Dash Panel57
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Soft Top67
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Bumpers72
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Rear Bumpers73
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Hood75
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Alignment75
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Hood Lock76
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Hood Bumper76
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Front Seats77
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Rear Seat78
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Roll Bar81
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Seat Belts83
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Road Test96
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Water Test98
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Ab Wide Cotation117
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Frame Alignment119
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Frame Conditions119
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Center Side Sway120
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Frame Sag120
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Frame Kick-Up120
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Down at the Cowl121
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Sway121
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Sag Condition122
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Repair Jig Bench122
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Leveling122
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MZ Towers128
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Utilization129
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MIG Welding131
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Stitch Welding132
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Tack Welding133
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Plug Welding133
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Welding134
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Repairing135
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Spotweld Removal135
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Chisel or Snips135
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Spherical Cutter136
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Operation Symbol138
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Tool Symbols138
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Sealing150
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Touch up Paint174
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Color Matching176
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Primary Colors176
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Lighten (Drier)176
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Secondary Colors177
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Neutral Colors177
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MIX Examples177
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Procedure179
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Sandpaper180
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Standards180
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Abrasives180
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Precautions181
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Air Compressor181
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Paint Filtering182
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Air Pressure182
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Environment183
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E Dip Panels187
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Aluminum Wheels189
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Fender Flares193
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Test for Vinyl194
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Equipment200
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Vehicle Interior201
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Exterior Decals203
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Repair203
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Replacement203
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Preparation203
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Specifications217
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Dimensions217
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(Vin)219
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Fluid Capacities223
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Front Towing225
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General225
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Rear Towing226
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Axle Lubricant228
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Engine Contents231
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Special Tools236
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Drive Belts256
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Ignition System256
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Ignition Coil261
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Distributor261
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Distributor RPM266
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Fuel System269
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Air Cleaner269
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Fiil Filter269
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Build Date Code273
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Engine Mounting283
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Engine Removal285
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Valve Timing296
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Camshaft Removal306
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Oil Pan Remowal319
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Oil Pan Cleaning319
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Oil Pump Removal320
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Cooling System398
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Coolant400
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Coolant Draining400
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Water Pump402
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Water Pump Tests404
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Intake Manifold405
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Hoses406
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Radiator Removal409
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Fan Removal411
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Fan Installation412
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Dynamic Test412
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Fan Shroud413
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Engine Flushing415
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Solvent Cleaning415
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Core Plugs416
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EGR Valve471
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MCU Inputs487
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Oxygen Sensor489
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Knock Sensor490
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MCU Outputs492
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Idle Relay493
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Idle Solenoid493
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Start-Up Mode496
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Warm-Up Mode497
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Cruise Mode497
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Diagnostic Tests497
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MCU Connector502
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Diagnostic Test504
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Operational Test504
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Diagnostic Test506
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Exhaust Systems526
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Muffler Removal529
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Pulse Air System531
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Batteries543
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Battery Codes544
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Battery Removal545
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Battery Testing545
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Hydrometer Test546
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Heavy Load Test549
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Delco Alternator553
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Alternator Noise554
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Troubleshooting570
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Armature Tests578
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Solenoid Testing597
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No-Load Test598
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Armature Removal600
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Brush Removal601
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Armature Testing604
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Firing Order612
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ICM Connections613
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Flywheel614
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TDC Sensor615
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Rotor618
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Firing Sequence619
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Coil Test626
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Air Density630
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Fusible Links644
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Headlamp647
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Headlamp Removal647
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Headlamp Aiming649
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Taillamp Removal652
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Fog Lamp657
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Fog Lamp Aiming657
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Horn System665
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Horn665
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Horn Removal666
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Diagnosis670
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Instrument Panel690
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Clock Removal691
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Indicator Panel692
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Clutch Contents697
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Clutch Service702
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Transfer Case715
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Transmissions716
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Lubricant Type721
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Throttle Linkage739
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Rear Clutch Test746
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Front Servo Test746
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Governor747
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Stall Test747
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Rear Servo Test747
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Noise748
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Main Oil Cooler766
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Tire Pressures775
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Steering Columns787
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Steering Damper787
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Propeller Shaft903
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Description903
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Wheels and Tires909
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Tire Repair909
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Tire Rotation909
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Wheel Lug Nuts910
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Axle Shaft920
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Pinion Seal923
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Universal Joints960
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Specifications963
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Front Suspension964
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Rear Suspension964
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Track Bars964
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Stabilizer Bar966
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Track Bars967
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Front Springs968
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Rear Springs969
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Diagnosis Guides976
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Diagnosis Charts976
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Final Adjustment996
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Brake Pedal Removal1001
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Brake Bleeding1002
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Valve Service1002
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Valve Operation1002
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Heating System1010
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Heater Control Panel1014
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Blower Motor1016
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System Operation1020
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Service Valves1027
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System Pressure Test1030
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Discharge Procedure1030
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Leak Testing1034
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Flushing the System1035
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Leak Test Procedure1035
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Charging the System1036
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Charge Capacity1036
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A/C Control Panel1038
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Fan Switch1038
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Condenser1039
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Sight Glass1039
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Receiver-Dryer1040
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Expansion Valve1043
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Compressor Clutch1044
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Compressor Service1046
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Compressor Isolation1046
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Compressor Removal1047
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Compressor Oil Level1055
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Accessories Contents1059
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Radio Speakers1062
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Speaker Removal1062
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Speaker Installation1062
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Antenna Tests1063
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Mast-To-Ground1063
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Electrical Procedure1067
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Regulator Adjustment1068
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Parts Information1069
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SRT/TIC Information1069
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Filing Instructions1069
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Reposition1072
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Brakes1075
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Alternator No-Charge1077
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Idle Speed Variation1079
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Idle/Decel Switch1091
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Engines1096
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Front Splash Shields1100
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Gearboxes1104
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Underbody Noise1104
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Clearance Check1104
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Idle Speed1106
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Ignition Timing1106
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Fast Idle Speed1107
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2.5L Crankshaft1115
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2.5L Valve Springs1115
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Starter Removal1121
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Starter Installation1121
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Starter Testing1121
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Starter No-Load Test1122
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Armature Runout1124
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Starter Overhaul1125
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Starter Disassembly1125
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Starter Assembly1129
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Operating Ranges1134
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Shift Mechanism1135
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Transfer Case Fluid1142
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Ball Plug Leak Test1167
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Steering Column1176
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Tool Set1184
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Bearing Removal1186
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Bearing Installation1189
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Front Axle1193
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Drive Shaft Boots1193
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T.C. 207 Contents1199
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Identification1202
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Shift Linkage1206
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Overhaul1208
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Bearing Replacement1214
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Input Gear Bearings1215
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Mainshaft Assembly1219
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Thrust Washer Chart1269
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End Play Measurement1270
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Oil Pan Removal1270
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Overrunning Clutch1273
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Front Servo Removal1273
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Subassembly Overhaul1274
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Rear Servo Removal1274
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Park Lock Sprag1304
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Front Servo1342
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Rear Servo1344
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S00 Series1349
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Front Band1350
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Front Case Assembly1389
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Valve Removal1429
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Valve Refacing1430
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Valve Seat Refacing1430
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Preferred Method1431
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Alternate Method1432
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Water Pump Removal1434
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Fuel Pump1434
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Oil Pump Assembly1439
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Crankshaft Removal1440
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Piston Pin Removal1442
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Piston Ring Fitting1444
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Bearing Insert Pairs1447
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Valve Installation1460
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Fuel Delivery System1475
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Electric Fuel Pump1475
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Fuel Filter1475
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Fuel Injector1476
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Ballast Resistor1477
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Fuel Contrrol System1478
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ECU Inputs1478
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Battery Voltage1482
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Speed Sensor1483
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Starter Motor Relay1484
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A/C Controls1485
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ECU Outputs1486
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System Power Relay1486
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Modes of Operation1493
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Engine Start-Up Mode1494
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Engine Warm-Up Mode1494
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Deceleration Mode1495
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1.4L 1983-19851497
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Fuel Body Assembly1510
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ECU Conectors1517
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Summary1527
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EGR Valve (Renault)1548
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EGR Valve (Jeep)1549
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Cold Start Relay1558
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O-Ring Replacement1568
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Component Diagnosis1572
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MT Up-Shift Test1592
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2.0L Engine1594
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ECU Connector1610
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Diagnosis Procedure1631
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Engine Disassembly1652
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Valve Guides1655
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Valve Spring1656
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Cylinder Block1659
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Block Disassembly1659
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Oil Pump1662
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Pump Assembly1666
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Piston Pins1669
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Piston Rings1672
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Ring Gap Position1675
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Main Bearings1677
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Engine Assembly1679
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Connecting Rods1681
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Camshaft Bearings1685
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Final Assembly1694
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Wrangler/Yj Contents1701
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Introduction1702
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Voltmeter1704
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Ammeter1704
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Ohmmeter1704
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Jumper Wires1704
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Symbols1705
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Fuse Panel1706
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Fuse Panel Data1706
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Ground Distribution1709
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Starter1713
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Charging System1715
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Carburetor Circuits1716
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Tachometer1717
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Cigar Lighter1718
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Rear Defogger1720
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Operational Check1721
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Wiper/Washer1724
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Windshield Washer1726
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Heater1726
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Radio1728
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Radio Inoperative1729
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Noisy Reception1729
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Noisy Speaker1729
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Air Conditioning1730
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Blower Inoperative1731
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Gauge Package1732
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Clock1733
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One Gauge1733
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Cruise Control1735
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No Lamps on1736
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Engine Running Test1737
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Indicator Lamps1738
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All Lamps out1738
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One Lamp out1738
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Upshift Lamp out1739
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Brake Lamp out1739
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Flasher Circuit1743
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Headlamps1748
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Underhood Lamp1748
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Front Lighting1757
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Body/Roof1761
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Transmission1762
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4WD Lamp out1810
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Turn Signal Lamps1814
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Stop Lamps1815
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Hazard Lamps1815
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Backup Lamps1816
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Fog Lamps1818
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Circuit Index1843
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Wire Color Codes1844
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Harness Codes1844
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Starter - 2.5L1845
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Key Warning Buzzer1885
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Starter - 4.2L1887
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