Need Help with arcing 1998 Mustang GT - Ford Mustang Forum
 
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post #1 of 6 (permalink) Old 04-23-2010 Thread Starter
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Need Help with arcing 1998 Mustang GT

I did a PI head and intake swap a couple of months ago but now I have an arcing that is going on between the timing cover and the crank pulley. The car runs a little rough and will not pull hard until it gets to about 3000 rpm. I have traced wires looking for a bare wire touching metal, changed coils, changed plugs, does anyone have any other ideas or has anyone ever heard of this before?

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post #2 of 6 (permalink) Old 04-23-2010
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Probably have a damaged crank sensor


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post #3 of 6 (permalink) Old 04-24-2010 Thread Starter
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Getting ready to pull it this mornig , it is the only thing that has not been changed.
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post #4 of 6 (permalink) Old 04-24-2010
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Lemme know what you find, but that's most likely what your problem is. Look around for any other wires or such out of place, but its probably the sensor.

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post #5 of 6 (permalink) Old 04-24-2010 Thread Starter
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Replaced the crank sensor and the cam sensor, check and re-check the wires for broken , bare, or melted spots. Added an additional ground but you can still clearly see arcing from the crank pulley to the timing cover about every two seconds. I touched a grounding strap to the crank pulley and the arcing stopped but it is a little hard to ground the pulley!
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post #6 of 6 (permalink) Old 04-24-2010
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There may be something wrong with the balancer/crank pulley install then because it should be grounded if its properly installed, sounds like you're gonna have to pull the pulley and see what's up in there.

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