1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Rough idle and missing while driving

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Old 04-13-2010, 09:04 PM
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check for any vacuum leaks around where you did the work, chk your long term fuel trim for high or low.
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