2004 Mitsubishi Eclipse Service and Repair Manual

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Factory-Grade Data

2004 Mitsubishi Eclipse service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical diagnostics with wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more

Trims covered

  • GT Hatchback 2-Door
  • GT Convertible 2-Door
  • GS Hatchback 2-Door
  • RS Hatchback 2-Door
  • GTS Hatchback 2-Door
  • Spyder GTS Convertible 2-Door
  • GT Coupe 2-Door
  • Spyder GS Convertible 2-Door
  • Spyder GT Convertible 2-Door

Engines covered

  • 3.0L 2972CC 181Cu. In. V6 GAS SOHC Naturally Aspirated
  • 2.4L 2351CC l4 GAS SOHC Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

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Vehicle Safety Data

2004 Mitsubishi Eclipse Recalls & Complaints

NHTSA #04V31200029/06/2004Component: FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

ON CERTAIN PASSENGER VEHICLES, THE FUEL RETURN LINE HOSE FITTING ON THE ELECTRIC FUEL PUMP MAY BE IMPROPERLY MOLDED.

Consequence

BREAKAGE COULD RESULT IN A LEAKAGE OF FUEL AND IN THE PRESENCE OF AN IGNITION SOURCE, IT COULD RESUL

Remedy

DEALERS WILL REPLACE THE FUEL PUMP. THE RECALL BEGAN ON JULY 26, 2004. OWNERS SHOULD CONTACT MITSU

NHTSA #03V44200004/11/2003Component: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

ON CERTAIN PASSENGER VEHICLES, THE FUEL RETURN LINE HOSE FITTING ON THE ELECTRIC FUEL PUMP MAY BE RESTRICTED, CAUSING EXCESSIVE FUEL PRESSURE TO BUILD UP IN THE FUEL INJECTION SYSTEM. EXCESSIVE FUEL

Consequence

FUEL LEAKAGE IN THE PRESENCE OF AN IGNITION SOURCE COULD RESULT IN A FIRE.

Remedy

DEALERS WILL INSPECT THE FUEL PUMP PRESSURE. THOSE VEHICLES EXHIBITING HIGHER THAN NORMAL FUEL PUMP

NHTSA #04V42800001/09/2004Component: EQUIPMENT:OTHER:LABELS

CERTAIN PASSENGER VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 208, 'OCCUPANT CRASH PROTECTION.' THE BILINGUAL ENGLISH/SPANISH REMOVABLE AIR BAG WARNING L

Consequence

THIS DOES NOT MEET THE REQUIREMENTS OF THE STANDARD.

Remedy

MITSUBISHI CARIBBEAN WILL MAIL A CUSTOMER NOTIFICATION LETTER CONTAINING A WRITTEN DESCRIPTION AND A

TSB #10240443

This is a Dealer Letter sent to dealers informing that Mitsubishi Technical Training has launched the 3rd quarterly technician quiz for 2023.

TSB #10235609

This Technical Service Bulletin provides instructions and material safety data sheets for removal of rap-film adhesive residue.

TSB #10235606

This is a Dealer Letter sent to dealers informing that Mitsubishi Technical Training has launched the 2nd quarterly technician quiz for 2023.

TSB #10235608

This Technical Service Bulletin reviews the regulations that require a label showing the reduction in load carrying capacity be affixed to vehicles when the total net weight of accessories is more than 1.5 percent of the vehicle's gross veh

TSB #10211530

This Technical Service Bulletin was sent to dealers to explain the difference between normal dew condensation, which is a natural phenomenon, and water penetration caused by improper sealing or a defective/broken part.

TSB #10170852

This Technical Service Bulletin updates the door adjustment procedure in the Body Section of the applicable service manuals.

TSB #10170070

This TSB contains troubleshooting steps for diagnosis of various customer complaints relating to the audio system speakers in Mitsubishi vehicles equipped with original equipment audio components.

TSB #10170099

This is an index of Tech Talk newsletter articles released in 2012.

Showing the 8 most recent of 40 technical service bulletins on file with NHTSA.

20160510Component: AIR BAGSCrash reported1 injured

TL* THE CONTACT OWNS A 2004 MITSUBISHI ECLIPSE. THE CONTACT STATED WHILE DRIVING AT 65 MPH, THE VEHICLE CRASHED INTO ANOTHER VEHICLE ON THE DRIVER SIDE THAT LED TO THE VEHICLE ROLLING OVER THREE TIMES

20050824Component: AIR BAGSCrash reported1 injured

MY MITSUBISHI ECLIPSE SPYDER 2004 [XXX], DONE NEARLY 21,000 MILES MET WITH AN ACCIDENT ON JULY 25, 2005. IT VEERED OFF THE ROAD, WENT DOWNHILL FOR OVER TWENTY FEET AND COLLIDED HEAD-ON WITH A TREE TO

20041216Component: STEERING:COLUMN LOCKING:ANTI-THEFT DEVICECrash reported1 injured

WHILE DRIVING AT 15 MPH AND TRYING TO GO AROUND ANOTHER VEHICLE, THE STEERING LOCKED. THIS WAS THE SECOND OCCURRENCE WHERE THE STEERING COLUMN LOCKED, CAUSING A COLLISION. *AK ........DRIVER SUSTAINE

20160914Component: SERVICE BRAKESCrash reported

BRAKES WILL INTERMITTEDLY NOT RESPOND TO THE BRAKE PEDAL BEING DEPRESSED. CAR HAS NOW BEEN INVOLVED IN TWO REAR END COLLISIONS IN 3 MONTHS. REPAIR SHOP CANNOT DUPLICATE THE PROBLEM DESCRIBED. CAR W

20130702Component: STRUCTURE:BODYCrash reported

ROOMMATE DRIVING MY VEHICLE WITH MYSELF IN PASSENGER SEAT. STRUCK A DEAR MONDAY MORNING AT APPROXIMATELY 60MPH. VEHICLE WAS PUT INTO A DITCH AND ROLLED AT LEAST 1 TIME INTO A MARSH ON LEFT SIDE OF THE

Showing the 5 most serious of 20 complaints filed with NHTSA.

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