Question about 2002 Buick Century
Release tension on the serpentine belt revove belt start engine and see what happens more than once i have seen a belt driven component cause the same thing without being detectable hence a smoking belt squelling bearing noises none of these were present yet when belt was released problem was gone one was an a/c clutch hub one was alternator neither could be heard just thought you might try have also seen a mass air meter cause this without setting a code i can only assume you have covered all basics has actual fuel pressure been checked at the fuel rail there is a test port also a severely clogged fuel filter if pressure is issue generally under engine data on scanner your o2 sensor readings will be right at border line lean and quick snap of throttle does not iniate a sharp response hope this may help
Posted on Sep 16, 2010
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Posted on Jan 02, 2017
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