96 "88" Has Intermittent Misfire - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-29-2014, 02:25 AM   #11
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Wow, I have replaced many coils.......some with way less than 100K on them.....

Spark tester detects them easily......replaced more on 3.1/3.4'*, than on 3800'*, but I have replaced a lot of them.....before the 3.8'* went to 3 individual coils, we were replacing those Single Magnavox coils all the time....while 3 coils was a huge improvement, they still had failures....

In some situations, the coil was replaced because of arcing between the ignition wire and the coil terminal....so bad that sanding/cleaning the terminal, made a poor connection with the new wire....and usually led to a comeback later on....
I agree that this type of coil seldom gives trouble, and as I said earlier, I'm not sure if replacing the coil that had the slightly lower ohm reading was the cause, or if removing and installing the coils fix a bad connection, but the engine is running fine again.

Thanks for yout input.
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Old 04-29-2014, 09:10 AM   #12
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I had one coil that read a little lower than the others. I replaced it and the engine now runs fine again, but...I'm not so sure that removing and installing the coils didn't make a better connection somewhere.

Thanks for the help.
hard to tell which, but im cheap so i always try free first, and most times its just a little corrosion that builds up
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