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Old 11-09-2006, 02:51 AM
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garfield66
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Default 91 civic

I have a 91 civic and the idle seems to be hunting, there is no check engine light and I was wondering if anyone else has had a similar problem, I tuned the car up about 5000 miles ago.
Old 11-09-2006, 04:57 AM
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jaje
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does it only do it when the engine is cold or when it is warmed up?
Old 11-09-2006, 07:31 AM
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garfield66
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It does it all the time, while the car is idling, it will slowly increase and decrease the idle speed. It is not a major jump in idle speed just a slight increase.
Old 11-09-2006, 09:41 AM
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jaje
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You may have a vacuum leak of the intake manifold some where (hoses get old and crack).

Try resetting the idle to see if that fixes it...If you have a DX or STD it's to the passenger side left of the tb (tb sits like a carbuerator), Si or it's on the front or back




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