My car Revs up and down but doesnt die???

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May 9, 2006 | 10:18 PM

#11

characteristics

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revs up and down warm cold hot anything before it would just do it everyonce in a while no it does it pretty much all the time unless it is idling for 5 or more minutes then it USUALLY idles good. and it hessitates everyonce in a while too.

May 9, 2006 | 11:08 PM

#12

Chefboiali

scrotal surge

Joined: Oct 2005

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From: Cali

Quote:

Originally Posted by characteristics

I had my P28 ECU stolen, and had it replaced with a P28 from an automatic. The up and down reving came from having an automatic P28 in a 5-speed car. I tweaked the P28 and it stopped. Has your ECU been replaced?

Last edited by Chefboiali; May 10, 2006 at 07:09 AM.

May 10, 2006 | 02:18 AM

#13

mini-me civic

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Joined: Apr 2005

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yeahs sounds like ur IACV...

May 13, 2006 | 07:14 PM

#14

tommyhcky13

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mine use to do that and it was a vaccum leak. lots or searching through hoses solved that one

May 16, 2006 | 07:35 AM

#15

characteristics

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i cleaned out the IACV it didnt really make a difference when the motor is cold and i start it it doesnt rev up and down for about a min now that is the only difference. any more ideas?

May 16, 2006 | 07:37 AM

#16

RicoD

Pull my finger

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From: Arizona

HAve you checked for vacuum leaks?

May 16, 2006 | 07:49 AM

#17

characteristics

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I have checked. Is there a special way to check? What I did was un plug one side of the hose then plug the hose and the nipple. Is that what your supposed to do?

May 16, 2006 | 08:03 AM

#18

RicoD

Pull my finger

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From: Arizona

That could work, but the hose itself might have a hole that you can't see... I sprayed engine cleaner the last time I had one and it was bubbling so I replaced it with a new one

h: That might be over kill though but it worked for me