Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

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10.0

really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
1 / 0
Average Mileage:
17,383 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2001 Mitsubishi Diamante cooling system problems

cooling system problem

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2001 Mitsubishi Diamante Owner Comments

problem #6

Sep 202005

Diamante 6-cyl

  • Automatic transmission
  • miles

A D V E R T I S E M E N T S

My car is making me sick!! I noticed a smell of anti-freeze coming out of the climate control vents. Upon further investigation, I noticed anti-freeze/engine coolant leaking from the heater core down onto floor mats, climate control intake, electrical wiring inside dashboard, and more importantly automatic transmission computer. This is a significant safety and health issue and needs to be addressed immediately. Where is manufacturer's recall.

- Oviedo, FL, USA

problem #5

Jun 202005

Diamante 6-cyl

  • Automatic transmission
  • 54,300 miles
Noticed a smell of antifreeze comming out of the climate control vents. Upon further investigation, I noticed antifreeze/engine coolant leaking from the heater core down onto floor matts, climate control intake, electrical wiring inside dashboard, and more importantly automatic transmission computer. This is a significant safety and health issue and needs to be addressed immediately. Where is manufacturer's recall.

- Yonkers, NY, USA

problem #4

Nov 212004

Diamante 6-cyl

  • Automatic transmission
  • 5,000 miles
My car is making me sick. I purchased my car in Aug. 2001 and began to notice a smell in the car and fume closely resembling that of radiator coolant. The car was assesed by a Mitsubishi district manager and service personnel from my dealer and deemed to be sound. In the mean time I have suffered with runny eyes and intermittent paralysis in the right side of my face dependent on the amount of time spent in the car. I have contacted Mitsubishi numerous times about this and received no assistance. In November 2004 I noticed an increase in this smell and fogging problems of the interior windows. I took the car to the dealer telling them that I believed the problem was with the heater core. I ascertained this information through internet research dealing with Mitsubishi Diamante defects and problems. The car was returned to me with this problem more severe than when I took it in for repair. Any help or ideas that you can offer would be greatlly appreciated.

- Norfolk, VA, USA

problem #3

Feb 252004

Diamante 6-cyl

  • Automatic transmission
  • 45,000 miles

A D V E R T I S E M E N T S

My heater core went on my automobile. The car is a 2001 Mitsubishi Diamante which has 50,000 miles on it. The problem started when the car had 45,000 miles on it, but I didn't know it was the heater core until later on. The dealer had the car for 2-L/2 days for a job that was 6.9 hours. I was told that the box that the core was in was either broken or couldn't be shut, but then they were able to close it, fix it I hope. I was told by another mechanic that it could have been the O-ring and that they had a car the same year with the same problem, possible recall. The dealer did a shabby job in replacing my dash board, I have 3 screws that I found on the floor, my glove compartment has a screw missing, none of which I have in my possession fits the missing screw hole. When I picked up the car, the steering column came apart in my hands and so they took it back in to fix. Do they not check things after they complete a job, like are all the screws back in place. I will never buy another Mitsubishi and never advise anyone to buy one either. I was told that a heater core shouldn't break at only 50,000 miles and the car is only 3 years old.

- Bordentown, NJ, USA

problem #2

Dec 162003

Diamante

  • miles
Heater core failed, causing the front windshield to fog up. Also, consumer could smell anti freeze inside the vehicle. Dealership was notified but did not resolve the problem.

- Wolcott, CT, USA

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problem #1

Jan 022004

Diamante

  • miles
Car smells like coolant. Windows won't clear up while im driving. Very foggy. Dealer said I need a new heater core at 43,000 miles.

- Wheaton, IL, USA

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