How do I test for bad coil pack - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 10-04-2005, 08:15 PM   #1
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Default How do I test for bad coil pack

I believe I might have bad coil pack. I have mutimeter that will can test for ohms how do I set that up? I have replaced plugs and spark plugs. It still seems to have slight miss fire
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Old 10-04-2005, 08:17 PM   #2
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Techinfo. Do it hot and cold (use the oven if you have to). Some coils fail only when hot.

My best advice is to find a donor car and borrow three known good coils for a short troubleshooting session.
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Old 10-04-2005, 09:05 PM   #3
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Ok Fixed as usally with my car it was some stupid I found that my new 6 cylinder plug was cut put the old one it sort of happy but still missing some times. So I took coils off and clean the connection. Heavy deposit on mid coil. For now it seem to be happy
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