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Steve 4/9/2015

2002 Buick Park Avenue Base 6 Cyl 3.80L


All the lights and dash lights are flickering and the car runs rough when stopped at a stop sign or traffic light.

The car has 192,000 miles on it.
The lights do flicker when up on speed but not as bad.
Thought it might be the alternator but replaced it with an AC Delco Rebuild last year. Reason for change the Volt light was on. The problem just started last week but getting progressively worse. Changed plug wires last fall. Didn't use AC wires. Could a cheaper plug wires cause this problem?
There are not any warning lights on.

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