ENGINE RUNS ROUGH SOMETIMES ENGINE CODE IS BANK1...

2005 Buick Rendezvous

Tiny

Anonymous

November, 18, 2012 AT 7:03 PM

Engine runs rough sometimes, engine code is, bank1 system lean

FOUND 4561 RELATED QUESTIONS

Running Rough

27 ANSWERS
34 IMAGES

Idles Rough/changed Ects

37 ANSWERS
3 IMAGES

1 Answer

Tiny

DrCranknWrench

November, 18, 2012 AT 7:07 PM

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.

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