TABLE OF CONTENTS
This publication meets or exceeds the requirements of the current version of the California Bureau of Automotive Repair's "Minimum Requirements For Emission Repair Manuals" when used in licensed "Smog Check" stations for diagnosing and repairing emissions defects on 1993-96 vehicles covered by this publication. The Bureau has not certified the accuracy or completeness of the information contained herein. This statement does not constitute approval or endorsement, nor assumption of liability by the State of California. Check frequently with your MOTOR Authorized Publisher Representative to ensure that this is the most current and revised edition available. To obtain information on MOTOR Publications covering emission control diagnosis and repair for imported cars and light duty trucks, domestic cars, medium & heavy duty trucks and previous domestic light duty truck model years, call 1-800-4A MOTOR.

This edition covers service specifications and procedures on 1993-96 Light Trucks and Vans available at time of publication. Data reported in this manual is subject to change. This manual is divided into four sections using three tabs. The section before Tab 1 covers Vehicle Identification, Air Bag System Precautions, Computer Relearn Procedures, Service Reminder & Warning Lamp Reset Procedures, Air Quality Standards, Vehicle Maintenance Schedules and Electrical Symbol and Wire Color Code Identification. Tab 1 covers Chrysler Corp Jeep vehicles. Tab 2 covers Ford Motor Company vehicles. Tab 3 covers General Motors Corp. vehicles. Each tabbed section starts on page 1-1.
 
QUICK REFERENCE................................................................................ 1-1
HOW TO USE THIS MANUAL................................................................... 1-1
VEHICLE IDENTIFICATION .......................................................................0-2
AIR BAG SYSTEM PRECAUTIONS ......................................................... 0-4
COMPUTER RELEARN PROCEDURES.................................................... 0-7
SERVICE REMINDER & WARNING LAMP RESET PROCEDURES ............0-8
AIR QUALITY STANDARDS................................................................... 0-16
VEHICLE MAINTENANCE SCHEDULES ................................................. 0-37
ELECTRICAL SYMBOL & WIRE COLOR CODE IDENTIFICATION. 0-69
MANUAL INFORMATION LOCATOR, SPECIAL SERVICE TOOLS, Inside Inside Rear Cover    

CHRYSLER CORP./JEEP-TAB 1

ABBREVIATIONS & ACRONYMS.............................. 20-1 Ignition Wire Resistance.............................. 4-1
APPLICATION CHARTS........................................... 14-1 Sensor Adjustments .................................... 4-3
COMPUTERIZED ENGINE CONTROLS . Spark Plugs................................................ 4-1
Diesel Engine Control System .................................  13-1 Valves............................................................ 4-3
DIESEL ENGINE PERFORMANCE V6 Gasoline Engine:
SPECIFICATIONS..................................................... 3-6 Compression Pressures ............................... 4-4
ELECTRIC FUEL PUMPS......................................... 11-1 Engine Identification ...................................  4-4
ELECTRONIC INSTRUMENTATION .........................  18-1 Idle Speed & Mixture Adjustments ................ 4-4
EMISSION CONTROL SYSTEM APPLICATION Ignition Timing............................................... 4-4
CHARTS.................................................................. 14-1 Ignition Wire Resistance............................... 4-4
EMISSION CONTROLS Sensor Adjustments ..................................... 4-5
Chrysler, Except Ram 50.. ......................................  17-1 Spark Plugs................................................. 4-4
Jeep........................................................ ............  17-11            Valves .........................................................4-5
Ram 50.................................................................. 17-9 Inline 6-Cylinder Gasoline Engine:
ENGINE COMPARTMENT REFERENCE Compression Pressures ............................... 4-7
DIAGRAMS............................................................. 16-1 Engine Identification ..................................... 4-6
ENGINE SYSTEMS IDENTIFICATION......................... 2-1 Idle Speed & Mixture Adjustments ..................4-7
ENGINE TUNE UP & PERFORMANCE Ignition Timing..............................................4-7
4 Cylinder Gasoline Engine: Ignition Wire Resistance......................................4-6
Compression Pressures ............................................ 4-1 Spark Plugs..............................................4-6
Engine Identification ................................................  4-1 Valves......................................................4-7.
Idle Speed & Mixture Adjustments ............................. 4-2 Inline 6-Cylinder Diesel Engine:
Ignition Timing.......................................................... 4-1 Compression Pressures .................................. 4-7

FORD MOTOR COMPANY-TAB 2

ABBREVIATIONS & ACRONYMS ...........................  19-1
APPLICATION CHARTS........................................... 13-1
COMPUTERIZED ENGINE CONTROLS
DI Turbo Diesel Powertrain Control System................ 9-1
Electronic Engine Control (EEC) System.................. 10-1
Electronic Engine Control IV (EEC-IV) System........ 11-1
Electronic Engine Control V (EEC-V) System .........  12-1
DIESEL ENGINE PERFORMANCE
SPECIFICATIONS................................................... 3-6
ELECTRIC FUEL PUMPS......................................... 7-1
ELECTRONIC INSTRUMENTATION ....................... 17-1
EMISSION CONTROL SYSTEM APPLICATION
CHARTS............................................................... 13-1
EMISSION CONTROLS
Electronic Engine Control (EEC) System................. 16-1
Electronic Engine Control IV (EEC-IV System.......... 16-8
Electronic Engine Control V (EEC-V System......... 16-22
ENGINE COMPARTMENT REFERENCE
DIAGRAMS...........................................................15-1
ENGINE SYSTEMS IDENTIFICATION...................... 2-1

ENGINE TUNE UP & PERFORMANCE
4 Cylinder Gasoline Engine:
Compression Pressures ................................4-1
Engine Identification ..................................... 4-1
Fuel Injector Cleaning....................................4-3
Idle Speed & Mixture Adjustments .................4-1
Ignition Timing................................................4-1
Ignition Wire Resistance............................... 4-1
Spark Plugs...................................................4-1
Valves............................................................4-2
Inline 6 Cylinder Gasoline Engine:
Compression Pressures ............................. .4-7
Engine Identification ................................... .4-7
Fuel Injection Cleaning .................................4-8
Idle Speed Adjustment .................................4-8
Ignition Timing...............................................4-7
Ignition Wire Resistance.............................. 4-7
Spark Plugs..................................................4-7
Valves...........................................................4-8
V6 Gasoline Engine:
Compression Pressures............................... 4-3
Engine Identification .................................... 4-3
Fuel Injection Cleaning ................................ 4-6
Idle Speed Adjustment ...................... 4-4  Spark Plugs......................................... 4-9
Ignition Timing.................................... 4-4  Valves................................................. 4-11
Ignition Wire Resistance.................... 4-3  FUEL INJECTION.................................. 6-1
Sensor Adjustments .......................... 4-6  FUEL PUMPS....................................... 7-1
Spark Plugs....................................... 4-3  HOW TO USE THIS MANUAL............... 1-1
Valves......................................... 4-6     
IGNITION SYSTEMS
V8 Diesel Engine: Ignition System Application Chart ................ 5-1
Compression Pressures ....................4-13  Type 1 .................................................. 5-2
Engine Identification ..........................4-13  Type 2 .................................................. 5-17
Idle Speed Adjustment.......................4-13  Type 3 .................................................. 5-47
Injection Pump Timing........................4-13  Type 4 .................................................. 5-70
Injector Nozzle Pressure.....................4-13  Type 5 .................................................. 5-73
Valves...............................................4-14  QUICK REFERENCE ............................... 1-1
V8 Gasoline Engine: SERVICE BULLETINS ..............................18-1
Compression Pressures .....................4-9 SPECIFICATIONS
Engine Identification ...........................4-9 Diesel Engine Performance ......................3-6
Fuel Injector Cleaning .........................4-12 Tune Up..................................................3-1
Idle Speed Adjustment ........................4-9 TECHNICAL SERVICE BULLETINS......... 18-1
Ignition Timing.....................................4-9 TUNE UP SPECIFICATIONS...................... 3-1
Ignition Wire Resistance.......................4-9 TURBOCHARGERS................................. 8-1
Sensor Adjustments ...........................4-12 VACUUM HOSE ROUTINGS....................14-1

GENERAL MOTORS CORPORATION-TAB 3
                                                    
ABBREVIATIONS & ACRONYMS............... 17-1.......... Injection Pump Timing.....................4-10
APPLICATION CHARTS..............................11-1.......... Injector Nozzle Pressure .................4-11
COMPUTERIZED ENGINE CONTROLS Sensor Adjustments ..............................................4-12
Diesel Electronic Control (DEC) System ....10-1......Vacuum Regulator Valve (VRV)...........4-12
DIESEL ENGINE PERFORMANCE Valves....4-12
SPECIFICATIONS.........................................3-8....... V8 Gasoline Engine:
ELECTRIC FUEL PUMPS............................ 8-1.......... Compression Pressures ..................4-8
ELECTRONIC INSTRUMENTATION ............ 15-1.......... Engine Identification ......................4-8
EMISSION CONTROL SYSTEM APPLICATION Idle Speed & Mixture Adjustments................4-9
CHARTS....................................................11-1.......... Ignition Timing............................. .....4-8
EMISSION CONTROLS..............................14-1.......... Sensor Adjustments .......................4-10
ENGINE COMPARTMENT REFERENCE
Spark Plugs................................................4-8
DIAGRAMS.............................................. 13-1.......... Tachometer Connection .................... 4-8
ENGINE SYSTEMS IDENTIFICATION.......... 2-1.......... Valves.............................................. 4-10
ENGINE TUNE UP & PERFORMANCE .
FUEL INJECTION
4 Cylinder Gasoline Engine: Central Port (CPI)/Central Multiport (CMFI)
Compression Pressures ...........................4-2....... Fuel Injection System.................................6-1
Engine Identification ................................ 4-2....... Port Fuel Injection System.........................7-1
Idle Speed Adjustment ............................ 4-2....... Throttle Body (TBI) Fuel Injection System..6-1
Ignition Timing..........................................4-2..... FUEL PUMPS................................................8-1
Ignition Wire Resistance.......................... 4-2..... HOW TO USE THIS MANUAL...................... 1-1
Sensor Adjustments ............................... 4-4..... IGNITION SYSTEMS
Spark Plugs............................................. 4-2....... Delco-Remy Distributor Ignition (DI) (High
Tachometer Connection .......................... 4-2....... Energy Ignition (HEI)) ................................5-1
Valves..................................................... 4-4....... Electronic Ignition (EQ (Distributorless
V6 Gasoline Engine: Ignition System (DIS))..............................5-5
Compression Pressures ..........................4-6....... Enhanced Ignition System ....................... 5-7
Engine Identification ................................4-6....... High Value Ignition (HVS) System .............5-9
Idle Speed Adjustment ............................ 4-6....... Tracker Distributor Ignition (DI) System... 5-11
Ignition Timing......................................... 4-6..... QUICK REFERENCE ...................................1-1
Sensor Adjustments ............................... 4-8..... SERVICE BULLETINS ................................16-1
Spark Plugs............................................ 4-6..... SPECIFICATIONS
Tachometer Connection ......................... 4-6....... Diesel Engine Performance ...................... 3-8
Valves.................................................... 4-7....... Tune Up...................................................... 3-1
V8 Diesel Engine: TECHNICAL SERVICE BULLETIN.................16-1
Compression Pressures .........................4-10..... TUNE UP SPECIFICATIONS.........................3-1
Engine Identification .............................. 4-10..... TURBOCHARGERS ....................................9-1
Idle Speed Adjustment .......................... 4-11 VACUUM HOSE ROUTINGS .......................... 12-1