No Spark on 1 and 4. Changed Coil, still no spark. What could cause this?

Asked by mtkot Oct 26, 2013 at 11:34 AM about the 2005 Buick LeSabre Limited Sedan FWD

Question type: Maintenance & Repair

2005 Buick LeSabre, runs rough, check engine light on.  No spark for 1 and 4.  
Changed coil, still no spark.

5 Answers
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dandyoun answered 10 years ago

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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GuruVZRTB answered 5 years ago

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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GuruBKWYF answered 5 years ago

there is module right under the coils, thats the problem

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Mike answered 3 years ago

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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Rebekah answered 2 years ago

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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