2004 Mitsubishi Diamante problems
The Mitsubishi Diamante is an automobile that was manufactured by Mitsubishi Motors from 1990 to 2005.
The first series was a hardtop introduced to the public at the Tokyo Motor Show in 1989. It went on sale in Japan exclusively in May 1990 and won that year's Japan Car of the Year award. It was created by splicing an extra 6.6 cm (2.6 in) right down the middle of the Mitsubishi Galant, which itself had won the Japan Car of the Year award in 1987. The Diamante's platform was also used for the sporty Mitsubishi 3000GT.
The name Diamante was derived from the Spanish, Portuguese, and Italian word for "diamond" and was adopted also as homage to the Mitsubishi badge which is composed of three diamonds. In Japan, this vehicle was sold at a specific retail chain called Car Plaza.
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Common 2004 Mitsubishi Diamante problems
The Mitsubishi Diamante, a mid-size sedan produced by Mitsubishi Motors, has been known to have several common problems. These issues are based on complaints from owners of the 2004 model year.
One of the most reported problems with the 2004 Mitsubishi Diamante is the premature failure of the automatic transmission. This issue can lead to costly repairs and replacement of the transmission. The symptoms of this problem include difficulty shifting gears, slipping, and a sudden loss of power while driving.
Another common problem with the 2004 Mitsubishi Diamante is a coolant leak from the heater core. This issue can lead to a decrease in the efficiency of the car's heating system, as well as potential engine overheating. The symptoms of this problem include a sweet smell of coolant in the car, and the need to frequently add coolant to the car's radiator.
The Diamante's brake pedal pulsation is also a common problem. This issue can be caused by warped brake rotors or a faulty brake master cylinder. The symptoms of this problem include a pulsating or vibrating brake pedal, and decreased braking performance.
Additionally, some 2004 Mitsubishi Diamante owners have reported issues with the seat belts not retracting properly. This issue can be caused by a faulty seat belt retractor or a damaged seat belt webbing. The symptoms of this problem include the seat belt not retracting properly after use, and the need to manually retract the seat belt.
Another problem that has been reported by some 2004 Mitsubishi Diamante owners is the issue of the fog lights being on when they're not in use. This issue can be caused by a faulty switch or wiring problem. The symptoms of this problem include the fog lights being on when they're not needed, and the need to manually turn off the fog lights.
Lastly, the 2004 Mitsubishi Diamante is a rare car, and if any issues or parts are needed, it could be a bit tricky to find the necessary resources. There are little to no repair videos on YouTube and finding parts could be a challenge.
In conclusion, the 2004 Mitsubishi Diamante has several common problems that can lead to costly repairs and inconvenience for owners. These issues include premature failure of the automatic transmission, coolant leaks from the heater core, brake pedal pulsation, seat belt retraction issues, fog lights being on when not in use, and the scarcity of repair resources.
What size engine is in the 2004 Mitsubishi Diamante?
3.5 L
Used 2004 Mitsubishi Diamante - Specs & Features
| Engine | |
|---|---|
| Base engine size | 3.5 L |
| Cylinders | V6 |
| Base engine type | Gas |
| Horsepower | 205 hp @ 5,000 rpm |
Why did Mitsubishi discontinue the Diamante?
The Diamante was a popular car among buyers who were looking for a comfortable and stylish luxury sedan. It was not as popular as some rivals, such as the Toyota Camry and the Honda Accord, but it was a good value for money car. The Diamante was discontinued in 2005 due to declining sales.
What engine is in a Mitsubishi Diamante?
The Diamante was marginally larger with improved headroom. It was powered by several engines: the base engine was a 2.5-liter MVV (lean burn) V6, followed by a number of 2.5 and 3.5-liter variants, the 2.5-liter engine sported 175 hp and the 3.5-liter engine boasted 210 hp (160 kW).
Why won't my Mitsubishi Diamante start?
The most common reasons a Mitsubishi Diamante won't start are a dead battery, an alternator problem, or failed starter.
2004 Mitsubishi Diamante car problems categorized by type of issue
After analyzing all complaints sent to the NHTSA and researching popular Mitsubishi Diamante problems, we found that the most common problems with these 2023 model year vehicles are:
- Power train problems
The graph below shows statistics for all 2004 Mitsubishi Diamante vehicle components and the number of complaints received.
2004 Mitsubishi Diamante complaints
The NHTSA has received 3 complaints about various vehicle components related to the 2004 Mitsubishi Diamante.
POWER TRAIN PROBLEM
- Date Of Incident: 2018-10-02
- VIN: 6MMAP67P14T
- Components: POWER TRAIN
- Summary: 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.
POWER TRAIN PROBLEM
- Date Of Incident: 2011-10-28
- Components: POWER TRAIN
- Summary: 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
POWER TRAIN PROBLEM
- Date Of Incident: 2011-10-28
- Components: POWER TRAIN
- Summary: 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
2004 Mitsubishi Diamante recalls
The National Highway Traffic Safety Administration (NHTSA) has issued 1 recalls for different components of the 2004 Mitsubishi Diamante.
- Manufacturer: MITSUBISHI CARIBBEAN
- Components: EQUIPMENT:OTHER:LABELS
- Summary: 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 LABELS AFFIXED TO THE DASH AND TO THE SUNVISOR DO NOT MEET THE SIZE REQUIREMENTS OF THE STANDARD.
- 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 GRAPHIC OF THE BI-LINGUAL DASHBOARD AIR BAG WARNING LABEL. IN ADDITION, ALL CURRENT 2000-2004 NATIVA OWNERS WILL ALSO RECEIVE REPLACEMENT AIR BAG ALERT LABELS FOR THE SUN VISORS. THIS RECALL IS EXPECTED TO BEGIN DURING MARCH OR APRIL 2005. THE NOTIFICATION TO THE NATIVA OWNERS IS EXPECTED TO BEGIN DURING APRIL OR MAY 2005. OWNERS SHOULD CONTACT MITSUBISHI CARIBBEAN AT 1-787-251-8715.
Negative 2004 Mitsubishi Diamante car reviews
Positive 2004 Mitsubishi Diamante car reviews
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This car gets 26 mpg on the highway and has impressive acceleration. It also provides a comfortable ride. I'm very impressed with it, especially considering the warranties they gave me. It makes me very happy.
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So far, this car is great! I'm really happy with my purchase. I just bought it yesterday, and when I took it out for a spin late last night, I noticed quite a few heads turning to take a second look. Mitsubishi offered such a great incentive to buy, I couldn't resist, not to mention the awesome warranty!
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I really like the new look for the 2004 Diamante. It's still a great car, but with a bit more style! The only downside is that the wind noise can be a bit annoying when driving over 50 mph.
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I bought the Diamante for several reasons. One is the warranty. If you buy after 8-1-04 the second owner gets the balance of the 5 year or 60,000 mile coverage. I also like the way it looks. It has all the features of a more expensive car. I looked at more expensive cars, but to buy them I would have had to go higher mileage, have no warranty, and get someone else's problems.
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I hope you're doing well! I wanted to share my experience with the LS model that I bought unexpectedly last December. Over the past 3 and a half months, I've driven 7,500 miles, mostly in mixed city driving. I've found that it's really fun to drive on interstates at high speeds - I even got up to 110 mph on I-15! Although I never considered buying it before, I've grown to like it more and more. It has a nice, powerful growl when you accelerate briskly, and the air conditioning and Infinity stereo are both strong. The interior power equipment is also a great feature, and it has good day-to-day qualities overall.
Additional sources
More sources of information about 2004 Mitsubishi Diamante problems:
Mitsubishi Diamante Problems and Complaints - 5 Issues
Top Mitsubishi Diamante Problems · The automatic transmission may fail prematurely. 44 people have reported this · Coolant Leak From Heater Core. 38 people have ...
Mitsubishi Diamante LS 2004: Expert Q&A on Mitsubishi Diamante
Feb 8, 2013 ... I have a 2004 Mitsubishi Diamante that has been having some major electrical issues since I bought it in 2011. It - Answered by a verified ...
Getting a early 2000s Mitsubishi Diamante as first car? : r/newzealand
Jun 4, 2021 ... Would a early 2000s(2002/2003/2004) Mitsubishi Diamante ... common so get any ... engine or driveline (pulleys, sensors etc) that were the problem.
Mitsubishi Diamante Brake Issues — Car Forums at Edmunds.com
Jul 25, 2006 ... I am having problems with the braking system on my 2004 ford ranger. Need some ideas, Brake pedal goes from hard to soft. Is it possibly ...
2004 Mitsubishi Diamante Problems | Kelley Blue Book
How reliable is the 2004 Mitsubishi Diamante? See the most common repairs performed and learn if your vehicle is at risk for major repairs in the next 12 ...
Other years of Mitsubishi Diamante
Are you having problems with your 2004 Mitsubishi Diamante?
Quinn Grant 2024-09-23
This car is nice and fun, but I personally feel that the front design resembles that of a Buick Skylark, which may make it appear dated. However, the 2004 model has a more modern look. While I appreciate the available options, I am currently leaning towards an SUV for its performance, space, and features, which seem to be the new trend in luxury vehicles. Although this car didn't quite meet my expectations, it is still a good car overall. It's interesting that you don't see many of them on the road though, isn't it?