Stripped IAC Worm Gear?
Race Director
Joined: Apr 2002
Posts: 10,036
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From: Anaheim CA
The ignition module has a timing curve built in to it and it will advance the timing if the ECM is not in bypass mode.
You can check the harmonic balancer for outer ring slippage by lining up a straight edge with one of the spokes in the center hub, which should line up with the timing mark:
You can check the harmonic balancer for outer ring slippage by lining up a straight edge with one of the spokes in the center hub, which should line up with the timing mark:
