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 08-06-2005, 09:25 PM   #1
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Default rough idle....

my bonne has developed a rough idle this week...it seems fine during acceleration but after stopping at a light I notice its rough enough to shake the steering wheel...it seems to shake in a cycle..it'll be fine then shake for a sec then its fine again...seems to take about the same amount of time between each shake..doesn't seem like it wants to die at all...the shakes are about 2 or 3 seconds apart...any ideas?

i know this could be alot of different things..anyone know how long it takes for all 6 cyl'* to fire?
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Old 08-06-2005, 10:43 PM   #2
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i had the same problem with mine. i replaced the tps and not it idles great. my only problem now is during decell it shakes from about 1500 - 1000 rpm but just sitting there at a red light much much better. im not saying thats whats wrong with yours but... that is what was wrong with mine.
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