Buick lesabre 02
Senior Member
True Car Nut
Joined: Jun 2003
Posts: 7,270
Likes: 465
From: Las Cruces, NM
Swap the coil with another. If the problem moves, it'* likely a bad coil. If the problem stays at 1/4, it'* likely a faulty ICM.
Also check codes to see if there are any codes throwing, as this can also give you some insight on what is going on also.
Also check codes to see if there are any codes throwing, as this can also give you some insight on what is going on also.
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