One problem related to engine has 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.
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.