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Old 11-04-2009, 08:23 PM   #4 (permalink)
eage8
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I would imagine you map sensor is on it's way out and every once in a while it throws some bad values so your ECU throws a code and ignores it... resetting your ECU will make it pay attention to it again until the sensor flakes out again.

I'm not certain this is what's happening, but it's a good bet.
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