Engine Cooling System problems of the 2001 Mitsubishi Diamante

Six problems related to engine cooling system have been reported for the 2001 Mitsubishi Diamante. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 Mitsubishi Diamante based on all problems reported for the 2001 Diamante.

1 Engine Cooling System problem

Failure Date: 09/20/2005

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.

2 Engine Cooling System problem

Failure Date: 06/20/2005

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.

3 Engine Cooling System problem

Failure Date: 11/21/2004

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.

4 Engine Cooling System problem

Failure Date: 02/25/2004

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.

5 Engine Cooling System problem

Failure Date: 01/02/2004

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.

6 Engine Cooling System problem

Failure Date: 12/16/2003

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.


Other Engine And Engine Cooling related problems of the 2001 Mitsubishi Diamante



Fuel Economy of Diamante Vehicles
Diamante Service Bulletins
Diamante Safety Recalls