2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
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Erratic Idle

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Old 12-05-03, 08:06 AM
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Erratic Idle

I have a 91 with a stock 13B. Lately, I have had a noticable variation in idle speeds. After warmup, the engine idles at around 1500 but fluctuates between 1500 and 1650. It is like it has a pulse and is steady. The car runs fine and no problems as to acceleration or cruise. The only recent change I made was to change the filter housing. I had the top cut out of the former and decided to put 1 inch holes in the replacement on the cool side of the housing. Any ideas? Thanks.

And yes, I did try the search first.

Last edited by Batguano; 12-05-03 at 08:09 AM.
Old 12-07-03, 07:50 AM
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Anyone.........anyone?
Old 12-07-03, 12:04 PM
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Perhaps TPS, did you check if it was adjusted properly? Could also be a vac leak.
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