*shrug* posted by Ash's Z on July 31, 2006 at 08:04 PM
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good dielectric grease underneath to get a good ground contact with a ground contact washer (basically, it bites a little bit into the plenum and a little bit into the knock sensor). Never had a problem since. And the paranoid guy that I am, I ran codes often to check - mind you, I would have noticed the sudden loss of power.