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87 Buick century...3.8 well maintained...had in garage for a month...all sensors have been verified..bought new computer and used old proms..still no resolve...finally took to dealer and they said a bad ecm and prom..took new ecm back to store..reinstalled old ecm back to original and sent her to dealer..dealer said bad ecm & prom.. so if I buy an newer ecm of an 88 Buick Electra will it work...also should I go used or new..auto zone can only order one prom? Help

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I doubt the ECM from a C body would work on your Century. I would probably buy a used computer and prom from a car exactly like yours. The prom is calibrated to the body style, engine, and trans. Each year and model can be different due to emissions standards.

Posted on Jul 11, 2013

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