2001 Pontiac Bonneville engine idles up & down

2001 PONTIAC BONNEVILLE
170,000 MILES • 6 CYL • FWD • AUTOMATIC
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CHARLIEMARTIN1971
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My engine idles up and back down at a stop. I have changed my O2 sensors(2 of them) and it still does it. Any more help
Nov 23, 2008 at 1:58 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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