Question about 1996 Pontiac Grand Prix

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1996 Pontiac Grand Prix surging

The engine seems to be surging. The speed doesn't matter, sometimes 50 mph, sometimes 30mph. The odometer shows the rps are going crazy for a few seconds, then goes back to normal. Could it be the transmission modulator valve? I assume this has an electrical one, not like the older models.

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NO the problem is in the ignition coil or the ignition module which is right under the coil pack

Posted on Nov 13, 2008

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