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1999 Honda civic idle problem

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Old 03-09-2015, 05:23 PM
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Default 1999 Honda civic idle problem

i have a 99 civic, Car drives good for awhile until CEL (code p0505) pops up car feels like it wants to stall in 1st n 2nd gear on low Rpm have to atleast drive 25000rpm for it not to feel like it's going to stall. I reset the Ecu CEL deletes and car runs good the idle issue is only when CEL is On. I Bought a IACV, replaced the manifold /throttle body gasket, checked for any vacuum leaks ( didn't find any leaks). What could it be?
Old 03-09-2015, 05:30 PM
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Default Re: 1999 Honda civic idle problem

You need to adjust the idle speed. See diagram in FAQs sticky.
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