New coil pack, still no spark Help! (fixed) - 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 12-03-2011, 09:37 AM   #1
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Default New coil pack, still no spark Help! (fixed)

I have a 1998 bonneville non supercharged only running on 4 cylinders.
I replaced the coil and still no spark at the coil. someone told me it could be the...
Ignition module? under the coils. Does sound like a possibility if so how hard is it to replace?

Thanks, Jon
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Old 12-03-2011, 10:07 AM   #2
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Is it the same two cylinders that share a coil? If you have replaced the coil, and problem is still there, although possible you have another deal coil, it'* more likely the ICM is bad. The terminals that go in to the coil can go bad.
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Old 12-03-2011, 10:17 AM   #3
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yes same coil. If ICM any links to how to replace?
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Old 12-03-2011, 11:16 AM   #4
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make a note of where the wires go, take off the coils, take off icm and replace. just put everything back together with a bunch of dielectric grease
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Old 12-03-2011, 12:02 PM   #5
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Not much to changing it. Like mentioned, make a not of where each coil goes. Leave plug wires on the coils. Remove each coil. Remove plug to ICM, and remove bolts holding it down. Don't over tighten anything, the treads are very thin and strip easy.
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Old 12-03-2011, 05:19 PM   #6
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Thank you guys, bought new module from O'rielys $135, took me less than 1 1/2 hrs
car runs great!
Now I have to get the cat converter back on that was about to melt...
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Old 12-03-2011, 06:20 PM   #7
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Good to hear it'* fixed.
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