Computor shows random misfire , gages drop to zero
You may have a jacked up wire... or plug...this happen to me on my 2004 grand prix gtp 2 times...1 time one of my plugs was cracked the 2nd time my plug wire was laying on dip stick and started to melt....each time after replacing the plug and the wire it stopped misfiring...
Hmmm,something tells me that you possibly have problem with ignition control module.
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