1986 Buick Park Avenue whhat does this mean help help

1986 BUICK PARK AVENUE
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CLOW339
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Engine Performance problem
1986 Buick Park Avenue 6 cyl Front Wheel Drive Automatic

est sngal didnot change when ecm applyed bypass voltage to ignition module what dose thes mean
Jul 5, 2010 at 6:43 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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