Yesterday evening I drove, sudently the check engine light comes on. I feel that the engine is loosing power, the car is rolling arount 50MPH. I started to steer the car to the side of the street, after rolling about 5-10 second, power came back, and I was driving with check engine light. The car drove as before, smooth, normal, I could not feel any change. This morning the check engine light is off, the car drives like a charm. This happened to me about 3 times in the last 3-4 months, I am waiting until the car brakes down so I can fix the problem... I am wondering, anybody has some suggestion? Thanks for your help, Gabe

...using the diagnostic test box on the left strut tower. The meaning of the codes and how to pull them are listed in the 700-900 FAQs in the FEATURES pull down.
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Art Benstein near Baltimore

ditto with ART, the codes are stored until the OBD is reset or the battery cable is removed. 89's have a ECU that is known to be erratic on occasion. (I used to have one, they can make you want to pull your hair out at times with the false codes) If you can't find anything, clear the codes and see if it happens again.