HomemadeTurbo - DIY Turbo Forum - unstable idle when not under boost

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Gude	11-01-2003 06:54 PM

unstable idle when not under boost

i have a 91 civic hatchback and it idles wierd , lets say at regular idle its asposto be at 1000 rpm, well it jumps from 1000 to 2000 like wammm paaa wammmm paaa , i think its my evac sensor, but i need opnions, when under boost it runs fine.. i also have a IHI turbo on it... and its ona a 1.5 dual point

shortyz

11-01-2003 06:57 PM

Re:unstable idle when not under boost

whats a EVAC sensor?

iacv?

turboboy

11-01-2003 07:23 PM

Re:unstable idle when not under boost

lol i was trying to imagine idling while boosting....sounds like a vac leak

whiterice

11-02-2003 01:27 AM

Re:unstable idle when not under boost

what bov?

turboboy

11-02-2003 02:05 AM

Re:unstable idle when not under boost

why would the bov matter at all

89dxhunchback

11-02-2003 03:17 AM

Re:unstable idle when not under boost

Quote:

Originally Posted by ghettoturbo

lol i was trying to imagine idling while boosting....sounds like a vac leak

Dido on both.

Dr.Boost

11-02-2003 07:20 AM

Re:unstable idle when not under boost

Are you getting any codes? I would say the IACV, the o2 sensor, or a vac leak. Check for codes.
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