2002 Mitsubishi Diamante LS V6 from North America


Rather disappointed!


I bought my 2002 Mitsubishi Diamante LS (30k miles) during the summer of 2007 from a used car dealership. The day that I purchased my Mitsubishi, the check engine light was on, however, the car salesman stated that they would take care of the light. During the very first week of purchase, not two days after I drove away with my car, I began to feel a delay in the take off. I'd be completely stopped at a light, and when I placed my foot on the accelerator, it would drag or delay until I reached above 10-15 mph. I took it to a Mitsubishi dealer and they diagnosed it as a B Sensor or Sensory B issue, and replaced the sensor.

Not even a year later (2008), I began to have heater core issues where the fluid was leaking into my passenger seat floor panel. This did indeed cause my windows to fog up every single second of the day, whether I was in or out of the car.

During the beginning of February of 2010, I began to experience problems with my car shifting into gears. I would stop at a light or stop sign, and upon acceleration, the car would jump 3 times before it drove smoothly. This was absolutely abnormal of my car (aside from the Sensory B issue), and I took it to a shop only to find out the I have to get a new transmission.

Yesterday, I finally got my car back from the mechanic and I seemed not to have any issues that night. However, this morning I began to experience the same issues as before; the transmission was replaced and the Neutral light is still flashing while it's in drive.

Some one made a comment about having experienced a problem identical to mine, and I was amazed to see that Mitsubishi has quite a history of problems.

General Comments:

When I first purchased my car, I was elated! It was black, sleek and quite classy... it was too good to be true. Leather heated seats, all automatic, sunroof... simply gorgeous. But as I am experiencing a great deal of issues with this car, I've grown to be very disappointed with my purchase.

I wouldn't recommend this car to my worst enemy. =(

Would you buy another car from this manufacturer? No

Review Date: 15th March, 2010

16th Mar 2010, 14:20

I have a Diamante that has been the best car that I have owned in my life, and I'm 60 years old. My feeling is that your auto was abused, and that possibly the mileage was not correct. Of course you can buy a lemon in any brand. My lemons were a Ford Taurus SHO, and a Chevrolet Blazer.

17th Jul 2010, 21:31

Seems blaming a car because it did not work is a common trend.

As for the problems you have, it sounds like a lack of servicing history. A lack of study on the car that you bought.

I had the same problem with mine. And I knew what they were, after $10,000.00 to fix it up at the dealer's cost. But from that day forward, it worked better than ever.

27th Jun 2018, 01:27

Was the figure you mentioned off by an order of magnitude? Seems a tad steep.

27th Jun 2018, 15:58

A bad heater core should not have any bearing. Trans slipping or going could cause an acceleration delay. Reset of a light on could be done, but that’s only shutting off a light. Replacing a sensor as well. What caused it? Maybe the real issue wasn’t fixed at all.

28th Jun 2018, 12:02

Unless to get to the heater core requires removal of the whole dashboard (there are cars which require that - maybe a good 5-6 hours of labour, and the risk that any of the multitude of wiring connectors was not put back right).

28th Jun 2018, 17:39

Or run a simple quick bypass under the hood. And have no heat.

2002 Mitsubishi Diamante ES 3.5 V6 from North America


Sporty fun


The heater coil went at 57k miles and cost over $700 in labor removal of the entire dashboard.

I had timing belt changed around 86k.

The ABS failed when the rear wheel sensor quit just over 100k.

Now the rack and pinion gear has been leaking for many months, and I'm looking at over $700 repair charge at approx. 130k miles.

Otherwise, it's been a fun car to drive.

General Comments:

This car has great pick up and handling. Tends to torque right causing over correction of steering to the left, which in the US, 2 way roads, is on-coming traffic. It could be dangerous in the hands of inexperienced driver at times. Generally a fun car to drive.

Would you buy another car from this manufacturer? Don't Know

Review Date: 27th November, 2009