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Re: Changed the battery now the idle is surging?
Dirve the car a little and see if it stop surging. The computer has to re-learn sensor signals (unhooking the battery on 94-older GM cars clears the computer). The surging idle is normal during this re-learning period. It takes a certain number of events for the computer to make it's adjustments, so just drive it over varying types of driving (stop and go, a little x-way cruise, idle for a few minutes, etc....) to finish the relearn process. If doing this doesn't help, re-post and we'll get into what may be wrong.
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Still waiting for the "good old days" I'll get to bore my future grandchildren with!
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