2004 MITSUBISHI Diamante Problems

VIN Decoder

Premium Report

Complaints Reported

Complaints by Component

POWER TRAIN

3 complaints

THE DIAMANTE HAS AN ODD ISSUE WHERE THE VEHICLE WILL NOT SHIFT GEARS CORRECTLY WHICH AN EXTREMELY DANGEROUS ISSUE FOR DRIVERS. THE INFORMATION BOARD SHOWS THE TRANSACTION RAPIDLY SWITCHING FROM NEUTRAL TO DRIVE EXCESSIVELY. I HAVE HAD MULTIPLE MECHANIC SHOPS LOOK INTO THIS ISSUE FROM TRANSMISSION SPECIALISTS, TO ELECTRICAL SPECIALIST AND HAVE HAD NO POSITIVE RESULTS.

Nov 08, 2019

CPSC#I11B0131A. 2004 MITSUBISHI DIAMANTE. F4A51 AUTOMATIC TRANSMISSION FAILURE. *LN THE CONSUMER STATED SHE HAS CONCERNS WITH THE SAFETY AND RELIABILITY OF MITSUBISHI AND DODGE VEHICLES AND THEIR OWNERS THAT HAVE THE MITSUBISHI F4A51 AUTOMATIC TRANSMISSION IN CERTAIN MAKE/MODELS. THE MAIN ISSUES SEEMED TO BE A MANUFACTURING DEFECT IN THE WAVE/CUSHION SPRING LOCATED IN THE TRANSMISSION DESIGNED THE WAVE SPRING AS A FRAGILE TWO COIL PIECE WHICH HAS BEEN KNOWN TO REPEATEDLY BREAK CAUSING CATASTROPHIC FAILURE IN THE TRANSMISSION. WHEN THE WAVE BREAKS, ACTUAL PIECES OF THE WAVE SPRING MAKE IT THROUGH MITSUBISHI'S ALSO FAULTY TRANSMISSION FILTER AND LODGE THEMSELVES IN THE PUMP GEAR,CAUSING THE HEAR TO ACTUALLY BREAK. AFTER THE PUMP GEAR HAS BEEN BROKEN INSIDE THE TRANSMISSION, ALL FORWARD AND REVERSE GEARS IMMEDIATELY STOP FUNCTIONING AND IN MOST INSTANCES THE VEHICLE SHUTS OFF. THE CONSUMER STATED SHE HAD THE F4A51 AUTOMATIC TRANSMISSION IN HER VEHICLE, WHICH HAD TO BE REPLACED. *JB

Jun 13, 2012

THE MAIN ISSUE SEEMS TO BE A MANUFACTURING DEFECT IN THE WAVE/CUSHION SPRING LOCATED IN THE TRANSMISSION. MITSUBISHI HAS DESIGNED THE WAVE SPRING AS A FRAGILE TWO COIL PIECE WHICH HAS BEEN KNOWN TO REPEATEDLY BREAK CAUSING CATASTROPHIC FAILURE IN THE TRANSMISSION. THIS IN TURN POSES A THREAT ON THE DRIVER AND PASSENGERS. WHEN THIS WAVE SPRING BREAKS, ACTUAL PIECES OF THE WAVE SPRING MAKE IT THROUGH MITSUBISHIS ALSO FAULTY TRANSMISSION FILTER AND LODGE THEMSELVES IN THE PUMP GEAR, CAUSING THE GEAR TO ACTUALLY BREAK. AFTER THE PUMP GEAR HAS BEEN BROKEN INSIDE THE TRANSMISSION, ALL FORWARD AND REVERSE GEARS IMMEDIATELY STOP FUNCTION AND IN MOST INSTANCES THE VEHICLE SHUTS OFF. THIS COULD RESULT IN POTENTIAL HARM OR EVEN DEATH OF THE DRIVER AND/OR PASSENGER AS THE VEHICLE LOSES ALL MOVING POWER WHICH CAN CAUSE AN ACCIDENT WITH OTHER VEHICLES ON THE ROAD. MITSUBISHI HAS RECENTLY CREATED AN UPDATED VERSION OF THE WAVE SPRING WITHOUT ISSUING A RECALL, WHICH NOW IS A ONE PIECE INSTEAD OF THE COIL SETUP AND HAS A LESS CHANCE OF BREAKING.THIS UPDATE WAS DISCOVERED AFTER THEY I HAD MY VEHICLE IN A TRANSMISSION SHOP WITH A HEFTY BILL TO PAY ($3,700) EVEN THOUGH IT WAS MITSUBISHIS FAULT FOR ENGINEERING A FAULTY PART IN THEIR TRANSMISSION. ALL ONE PERSON WOULD NEED TO FIND OUT ABOUT THIS ISSUE IS SEARCH THE INTERNET WITH THE TRANSMISSION CODE (F4A51) AND THIS ISSUE IS WELL DOCUMENTED, EVEN RESEARCHED BY TRANSMISSION DIGEST (A SPECIALTY MAGAZINE). NOT ONLY IS THIS A LARGE INCONVENIENCE, IT IS ALSO A HAZARD TO ONES LIFE. MITSUBISHI SHOULD RECALL ALL VEHICLES WHICH CONTAIN THE F4A51 AUTOMATIC TRANSMISSION TO PERFORM THE WAVE SPRING AND FILTER UPDATE OR REIMBURSE THOSE, LIKE MYSELF, WHO HAVE ALREADY HAD IT DONE AT MY COST. *TR

Nov 15, 2011

4.5/5.0

40 reviews

MITSUBISHI Diamante VIN Decoder — Free VIN Check Video Guide

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Where to Find VIN for Problems Check

To check for problems and complaints on your 2004 MITSUBISHI Diamante, you'll need the VIN number. Find your VIN in one of these 4 common locations.

Where to Find VIN Number on 2004 MITSUBISHI Diamante for Problems Lookup - Dashboard, Door Jamb, Engine Bay, Documents

Understanding VIN Structure for Problem Reports

Each character in your 2004 MITSUBISHI Diamante 17-digit VIN helps identify specific complaints and problems affecting your vehicle model.

2004 MITSUBISHI Diamante VIN Structure for Complaint Verification - WMI, VDS, Check Digit, Model Year, Plant Code

How to Check 2004 MITSUBISHI Diamante Problems in 3 Steps

Locate Your VIN

Find the 17-character VIN on your 2004 MITSUBISHI Diamante dashboard (visible through windshield), door jamb, engine bay, or vehicle documents.

Review by Component

Browse owner-reported complaints organized by vehicle component (engine, transmission, brakes, electrical) to identify common issues and problem patterns for this model year.

Check Safety Issues

Review crash and fire incidents for each component to assess safety concerns. Contact your MITSUBISHI dealer or report problems to NHTSA at SaferCar.gov.

Frequently Asked Questions

How many problems does the 2004 MITSUBISHI Diamante have?

The 2004 MITSUBISHI Diamante currently has 3 owner-reported complaints according to NHTSA database. These complaints are organized by component to help identify common issues.

What are the most common problems with 2004 MITSUBISHI Diamante?

The most common problems reported for the 2004 MITSUBISHI Diamante are organized by component above. Each component section shows owner-reported issues, crash reports, and fire incidents to help identify patterns and problem areas.

Where does this 2004 MITSUBISHI Diamante problem data come from?

All problem and complaint data for the 2004 MITSUBISHI Diamante comes directly from the National Highway Traffic Safety Administration (NHTSA) database. These are real complaints submitted by actual vehicle owners.

How do I report problems with my 2004 MITSUBISHI Diamante?

You can report safety problems with your 2004 MITSUBISHI Diamante directly to NHTSA at SaferCar.gov or call 1-888-327-4236. Your complaint helps identify patterns and may lead to recalls or investigations.

Where can I find my VIN to check problems?

Your 2004 MITSUBISHI Diamante VIN is located in 4 places: (1) Dashboard near windshield on driver's side, (2) Driver's door jamb sticker, (3) Engine bay, (4) Vehicle registration and insurance documents.

Is the 2004 MITSUBISHI Diamante reliable?

Reliability can be assessed by reviewing the number and severity of owner complaints for the 2004 MITSUBISHI Diamante. Check complaints by component, crash reports, and fire incidents above to evaluate potential issues and problem patterns.