After ECM replacement-correct RMP's - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
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1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 10-11-2003, 01:25 PM   #1
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Default After ECM replacement-correct RMP'*

Is it necessary to reprogram the idle after replacing the ecm? I've received yes and no answers. The no side says the ecm will relearn the idle after you drive the car. the yes side says you need to reset it. And what is the correct RPM? Is it between 600-700?
My 90SE'* tach shows 800-900 when its warmed up. My Delta 1989 after replacing the ecm shows 600-700. I did manage to reset the idle on the delta but I just want to make sure that I did it right. Thanks.
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