Rough idle - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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.

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Old 05-20-2008, 05:20 PM   #1
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Default Rough idle

Just baught a 1993 SSEI, it runs great and has 123K on it. Has a idle problem though, when cold it will idle fine and sometimes drop down a few hundred rpm and start missing and the computer will then kick it up and it will idle fine. Does that when cold intermittently. Then when warm it will have a steady miss at idle when your stopped in gear and low rpm when driving. When you stomp on it it has tons of power and will not miss a beat.

Any ideas? it has new LIM gaskets, reman supercharger, new plugs and wires. Not sure where to start, vacuum is good and been unable to find which cylinder is missing.

Mike
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Old 07-29-2008, 10:24 AM   #2
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Did you ever solve this? Because I have almost the same exact problem.
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Old 07-29-2008, 10:26 AM   #3
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Tele..please give us your symptoms and we'll work to figure it out with you.
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