1991 Pontiac Bonneville I'm having a voltage problem.

1991 PONTIAC BONNEVILLE
150,000 MILES • 6 CYL • FWD • AUTOMATIC
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TOMAS8866
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When I'm driving down the road and I either put my blinker on or touch the brakes the voltage meter goes down then back up I just replaced the alternator so I know it not that. I'm just wondering what could be going on, thanks.
Apr 20, 2010 at 9:07 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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