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The Diagnostic Port

Question for the week of September 8th, 1997

I've recently had problems with my Mitsubishi Eclipse that have been difficult to track down. I suspect that the ECU might be bad. What can I do to determine whether or not the problem is my ECU or not?

Figuring out ECU related problems can be very difficult indeed. However, determining whether or not a particular problem is caused by your ECU can be easy if you have a friend with a similar car. If the ECU in your friend's car is compatible with your car, you swap the ECUs and see whether or not the problem goes away. If it does, your ECU might have a problem. If it doesn't, more than likely, your ECU is okay.

What ECUs are compatible with what cars? Compatibility in the DSM line of cars is determined by three factors.

Past Diagnostic Port issues available.

Do you have a question about engine computers? Go ahead and ask it!

©1997 Technomotive