One problem related to wiper has been reported for the 1998 Mitsubishi Diamante. The most recently reported issues are listed below.
The heater core has failed (once again) I am not sure of any company that has realeased their cars with such a major failure without taking some kind of responsibility to recall this item in the car. Nearly all of the heater cores from Mitsubishi Diamantes that I have seen are all bad. Leaks onto the ecu and causes a whole heck load of problems. Please dot have Mitsubishi recall this. As to this causes immense damages and people like me driving around with this faulty piece are breathing in the fumes and driving with nearly full fogged windshields causing really poor visibility which is an extreme hazard to our roads and fellow pedestrians please I urge you to take this complaint serious and use your dot powers to make this manufacturer do what is right! thanks for your time.