Tl* the contact owns a 2002 mitsubishi diamante. The contact stated that while driving at 75 MPH, the contact attempted to brake but the brakes failed to respond without any warnings. The vehicle crashed into a passenger van. The vehicle was destroyed. The contact mentioned that two months prior to the failure the check engine light had illuminated. The vehicle was taken to an independent mechanic for diagnosis and was informed that the vehicle misfires, needed spark plugs, a fuel pump, a fuel injector, an egr valve, and the engine surged erratically. The failure and current mileage was 140,000. Updated 12/06/12*lj updated 12/6/2012
Mitsubishi Diamante check engine light comes on
20 of the 505 owner complaints about the Mitsubishi Diamante describe check engine light, most of them for the 2002 model year.
- owner complaints
- 20
- worst model year
- 2002
- typical repair cost reported
- $1,500
- typical mileage
- 63,000
Is there a fix? No recall or service bulletin covers this area of the car yet.
By model year
Often reported together
What owners say
Anti-freeze leak on carpet passenger side near firewall fogged up windows check engine light comes on and off due to the leak the ecu started working awful.
At approx 60k (I am the original owner) the car began to emit mist from the vents. The first incident was a near overheating event which caused me to check the coolant. After topping off the level the car operated normally for a few months and then repeated the behavior. The tcl went off, the check engine light came on, the mist got heavier, and the car is a danger to both myself as an operator and others on the highway because the fog from the antifreeze damages visibility. The floor mat on the passenger side has also gathered moisture from the apparent leak. This scenario is well documented by others and demands a recall.
I bought a 2002 mitsubishi diamante ls 10/3/07. He had 53,000 miles on it. It now has about 75,000 miles. My problem is the same as hundreds of owner of this car. Heater core issues. I recently had the heater core gaskets replaced as I was told that the heater core was ok, still had to pay for labor. It is now leaking again. This is a very common problem and seems that mitsubushi is unwilling to do anything about this. The heater core is right above the computer that runs the car. When the heater core goes bad, its leaks on the computer. What kind of sense does that make? My engine light is constantly on and I have seen the tcl light come on as well. I have searched the internet and all 3 of these problems are very common. I want to know if there is anything that can be done about this or if mitsubushi has addressed the problem and I am not aware of. I cannot afford to fix the car or get a new. Please help!
I own a 2002 mitsubishi diamante car, I bought this car in 02 since the 1st day I bought the car there was problems. The computer in the car went crazy my check engine light,,cruise control,anti lock brake, tcl light all started flashing . I took the car back to the dealer & they replaced the computer but it didn't work they put 3 computers in since then, these lights are still on till this day. In 06 my trans blew I took the car back to the dealer they replaced my trans the car still doesn't ride right. My A/C turns on but nothing comes out sometimes. In the winter the inside of my car becomes a fog all over my windows and it wont stop fogging up. A smell is coming out of my vents like a coffee smell & im inhaling this smell whenever im in the car I have to go to a doctor to get checked out to see if I have health issues .my sun roof leaks when it rains,I took my car back to the dealer to have all these issues fixed but they never did I purchased the car in 02 the warranty lasted 02-05 b/c that is when my warranty expired. When I call they tell me I have to pay out of pocket b/c the warranty expired. This isn't fair to any mitsubishi owner I shouldn't have to pay to have my car fixed now after the warranty when all the same problems have been recurring since I purchased the car and they never fixed it to begin with. I can understand if I was the only person with these problems I decided to search the internet to see if anyone else owned my make and model of my car to see if they had similar problems sure enough I came across a website called www.carsurvey.org/viewcomments_review_76426.html there's over 50 people with the same problems I have with my car.mitsubishi should fix these problems and stand by there cars. I called corporate headquarters today & was told there's nothing they can do b/c its out of warranty.
The heater core. I start smelling an antifreeze smell inside the car then the check engine soon light came on. Also the tcl is on. The dealer said that it is a wheel sensor that will run me $625. The heater core is $1,200. Every one that I talk to on the email sight is having the same problem. Please help! Thanks.
I own a 2003 diamante mitsubishi. The problem started with a check engine light coming on, fogging the window with a fowl toxic smell then the car would not hardly move out gear. I was told that the car's heater core leaked onto the computer which caused the transmission relay to short out do to the computer failing. The computer was still under warranty at 78,000 miles but I still had to pay for the new computer system because I was told that it was the heater core that caused the computer to fail. This is such a poor design! The computer should have been protected in such a case...funny thing it is now that I have had to replace a heater core, a computer and a transmission relay at a cut wrenching cost of $3,675.58. I wrote a letter to the president of north america mitsubishi that the heater core should be a recall but to no avail. I have all maintenance records on the diamante so that was not what caused this heater failure. I do have the computer that was replaced. It is now april and the check engine light has come back on...now what? Aj
I have 2003 mitsubishi diamante. My "check engine" light came on, so I took it in for service, and my heater core was leaking on my computer...now it's going to cost me around 3,500 dollars....this is a very flawed design. There should be a recall on this item.
Tl*the contact owns a 2002 mitsubishi diamante. The check engine light began illuminating, the heater coil was leaking, and the windows were steaming. The contact smelled a foul odor coming from the vehicle. A mechanic diagnosed that the heater core needed to be replaced. The failure mileage was 67,800 and current mileage was 67,990.
I have a 2002 mitsubishi diamante. I have kept regular maintenance. I am submitting this form because of a heater core issue I am having. However I have had the following problems with this car. All these problems seem to be recurring problems that happen to many people with this model. At least that is what I find when I search the issues on the internet 1- vibration in steering wheel --this happened multiple times after taking car back to dealer-it appears there is a known issue with the rotors in this car. After having the rotors cut twice by the dealer with no long lasting success. I had to have the brakes and rotors replaced by a mechanic ( car had less the 10,000 miles when issue started happening) 2- rusted muffler--not sure if this issue happens often but after 23,000 miles I had to have my muffler replaced because there was a hole rusted through the top of it-I was told this could happen for not using the car very much in the winter time( road salt can cause the rust) 3- heater core- I know have a heater core problem in this car. I have antifreeze leaking in passenger compartment. I have an antifreeze smell in the cabin of the car. My windows fog and the defroster will not clear the windshield ( makes it worse). I am low in antifreeze because of this. My service engine light has now come on and I am told this can be caused by leaking antifreeze onto the computer which is positioned under the heater core. This issue is widely reported on the internet in many forums and seems everybody with a diamante will eventually have this problem. I am being told this repair can cost over 1,000 dollars 4-I have had to replace 3 sensors in the engine 2 egr and 1 idle sender (cost around 1,500 dollars). This may or may not be because of the heater core issues causing the cars computer to fail.
Related recalls
No recalls on record for this model year.
Questions about the Mitsubishi Diamante check engine light
Why does the check engine light come on in the Mitsubishi Diamante?
Owners who report it most often also describe engine overheating, misfire or rough idle and fuel pump failure.
Which Mitsubishi Diamante years have check engine light problems?
The model years with the most reports are 2002 (10 complaints), 2003 (6 complaints) and 2000 (3 complaints).
How much does it cost to fix check engine light on the Mitsubishi Diamante?
Owners who mentioned a price put the repair at about $1,500 (median of 7 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.
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