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
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
I'm suspecting your ignition relay~ https://www.google.com/#q=2002+Buick+LeSabre+ignition+relay
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.
might be the ignition module under the ignition coil. are one and four on the same ignition module piece?
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