Two problems related to transmission gear slipping have been reported for the 1998 Mitsubishi Eclipse. The most recently reported issues are listed below.
Engine burns oil at approx. 1 qt per week, also has possible leaks in engine with only 69,000 miles on engine. Has had regular oil changes for life of engine. Brake rotors warped and need replacement, unsure of when last changed. Transmission slips and shifts hard with slow or fast acceleration.
Transmission slipping and down shifting/ tach red lines before shifting/ burnt transmission fluid at 19000 miles on that fluid also my spark plugs were burnt/ changed fluid ,fluid has now turned yellow miles on fluid 7942/ car is running ver poorly/dealer cannot find the problem seemed very upset because I didn't have the car serviced there. Will change trans fluid today the last time I changed the fluid it did shift better for a short period.