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Old Oct 8, 2009 | 07:44 PM
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From: Redmond, WA
Default Post Battery Disconnect Behavior

My vehicle is a 2000 Trans Am, stock automatic drivetrain w/GU5.

After having had my battery disconnected throughout last Saturday while installing a relay harness for new fog lights and the lights themselves, I suspect something has subtly altered in the vehicle behavior.

When I first reconnected the battery, the vehicle did not start up smoothly. It turned over for a few seconds, made annoying coughing noises and died. The second try it started right up and then hunted around until it settled in at about 500 RPMs after a few minutes [the reading was based on the dashboard tachometer].

Since then , acceleration seems "mushy" is the best way I can describe it. At times it almost seems like acceleration is lagging the engine. Is there any training or relearning that needs to take place? Anything to poke at?
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Old Oct 25, 2009 | 07:31 AM
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the ECM lost its history and is re learning the car it will finish when all sensors come out of not ready about 50 miles
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Old Oct 25, 2009 | 02:05 PM
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the idle has to relearn it self just give it a few miles.
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