Mitsubishi Diamante owners have reported 6 problems related to engine (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Mitsubishi Diamante based on all problems reported for the Diamante.
I have a 2003 Mitsubishi Diamante with 60,000 plus miles. For the past several months I have noticed a strong smell of anti-freeze coming from the vents and the windows constantly fogging up, sometimes to the point that I cannot see to drive. I have read many similar complaints and agree with others that Mitsubishi needs to issue a recall for the heater core, as I am sure this is the problem. I have yet to take mine in to get it repaired, so I don't have a cost quote at this time.
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all problems of the 2003 Mitsubishi Diamante
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Heater core (and possible effect on transmission issues) going up before its time (and this known to be a problem on the Diamantes for over 3 years of the model) and causing antifreeze fumes and smoke to fill my car for months unnoticed exposing my family and self to nauseousness, headaches, not to mention expense of repair on a relatively new vehicle.
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all problems of the 2002 Mitsubishi Diamante
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Heater core failure/leak in 2001 Mitsubishi Diamante LS; leaked on carpet; continuous odor. Dealer mcginnis Mitsubishi said it would cost over $1000 in labor costs to replace.
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all problems of the 2001 Mitsubishi Diamante
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1999 Diamante engine blew three weeks after purchase.
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all problems of the 1999 Mitsubishi Diamante
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The vehicle jerked as if it was going to shut off and sometimes it completely shut down intermittently.
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all problems of the 2000 Mitsubishi Diamante
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Torque converter/camshaft, and position sensor failed.
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all problems of the 1997 Mitsubishi Diamante
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