Question about 1997 Pontiac Sunfire

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When replacing a ECU computer on a 1997 Pontiac sunfire 2.2L what's do I have to do? Would I have to reprogram it er do it jus hook up and should work?..cuz I replaced mine with a second hand one am the serv # matches up but now since I switched it turns over but won't stay started and half da time I hav to keep da gas paddle to da floor to start it and it'll only run for a few seconds :( can anyone help me

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  • hank5899
    hank5899 Feb 29, 2012

    open the small cover held on by two screws pull out the prom chip and switch it with the original ecu look at it good because it only goes one way.



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Take the prom chip out of your old ecm and put it into the replacement ecm

Posted on Feb 29, 2012


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