Rough idle 93 ssei - 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 12-16-2004, 08:25 PM   #1
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Default Rough idle 93 ssei

When i start my car it runs and idle fine until i drive it then when i stop at a light the idle drops to about 750 and is jumpy, my car has 145,000 mile on it and i just replace the plugs and wires.any suggestions, could it be an 02 sensor or tps sensor, i pulled a code and it gave the the knock sensor code, so i found the sensor and it was unplugged , i plugged it back in but it still idles rough should i just have the sensor replaced? any help would be greatly appreciated
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Old 12-16-2004, 09:27 PM   #2
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When was the last time you cleaned the Throttle Body, IAC, and IAC passage? That sounds like the culprit to your issues if it'* been a while [or never]. Get some Throttle Body Cleaner [make sure it'* MAF sensor safe], remove the TB, and clean away .


-justin
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