Having problems with your 1990 Oldsmobile Eighty Eight ?

Ecm error codes 27 28 and 29 on 1990 olds delta 88

\015 Can anyone tell me what these error codes mean. THey are deleted from the code list, and I can't find them online. the haynes manual just says take the car to a dealer. thanks haynes! I have replaced the ECM, but not the memcal ATXZ 8292\015 Posted / edited by AnonymousUser on : 20-11-2017

Answers :

Turns out the new computer Ipurchased for this car was bad. I replacaed the old one as a pre-emptive strategy. My car has 752,000 on it and i plan to run it longer. I got a used computer from a wrecker just to see what would happen, and sure enough the new computer was bad. Who knew! The wrecker computer works fine.

Repair Help & Product Troubleshooting for 1990 Oldsmobile Eighty Eight

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