No Spark on 1 and 4. Changed Coil, still no spark. What could cause this?
5 Answers
If one of the plugs is fouled out it can cause neither to fire if they both come off same coil.
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so if coil and plug changed and still have the some problem do you think it would have a short in electrical harness
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there is module right under the coils, thats the problem
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Coil module is likely bad. I have the same problem on my Buick LeSabre. Coils are good, swapped them out, same problem, same plugs. Going to get a new module right now.
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Hi sorry this isn't a answer but rather a question. Our Buick LeSabre is doing the same and I was wondering if you ever fixed it, and if you did, what was the problem? Thanks.
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