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Old 05-01-2005, 06:50 PM
DRW1000 DRW1000 is offline
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Re: Runs better prior to drive cycle

Well when you disconnect the battery you are in fact removing the "learned" values. This means that the PCM uses a factory default for these values until it re-aquires this data.

From what you describe it sounds like the "learned" data is making it run rough. Perhaps they are not good values based on bad input perhaps a bit in memory is stuck and the PCM reads somrth9ng diffrent then it stored.
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