i changed both oxygen sensors spark plugs and wiresi changed my number 1 and 4 coil which showed no spark car still misses could my igniter be bad and cause miss

Asked by Oct 31, 2013 at 08:00 PM about the 2002 Buick LeSabre Custom Sedan FWD

Question type: Maintenance & Repair

ihe car was running very bad it runsway better but still is missing my coil which controls number 1 and 4 cylinders showed no spark so i changed it it stillhas a miss but runs way better could i possibly need a igniter to make sure all cylinders are firing

3 Answers

I'm suspecting your ignition relay~ https://www.google.com/#q=2002+Buick+LeSabre+ignition+relay

1 people found this helpful.
118,315

I assume you have the 3800 series 2 engine, when was the last time you changed the plug wires? These coils use the plug wires as a polarity unit, when one plug is positive and firing the other is negative and it switches back and forth so if you have a bad wire that coil can't switch properly causing a misfire.

2 people found this helpful.
8,655

might be the ignition module under the ignition coil. are one and four on the same ignition module piece?

1 people found this helpful.

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