Mechanics

BUICK RENDEZVOUS ENGINE PROBLEM

2005 Buick Rendezvous • 13,600 miles

Engine runs rough sometimes, engine code is, bank1 system lean
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Guest
November 18, 2012.



Could be a leak in the exhaust near an oxygen sensor making the ECU think that it is running lean. Check the exhaust for cracks or leaks near oxygen snesors.