Bouncy Idle, PLEASE HELP..... - Honda Prelude Forum

LudeTec · 10-28-2001, 01:02 AM

My car has a very bouncy idle...but when I unplug the IACV the it stops, but then my idle is way to low...so the car doesn't run well, and also the throttle is weird. Throttle is really touchy when the IACV is unplugged. What do you guys think?
THanks, Josh

Machine Head · 10-28-2001, 08:14 AM

slipping timing belt maybe?

LakeMountLude · 10-28-2001, 10:12 AM

IACV? it could be dirty injectors too, or detonation.. but doubt detonation..

NOSlude · 10-28-2001, 11:02 AM

what kinda motor do u have?

LudeTec · 10-28-2001, 11:19 AM

Hey,
It isn't timing belt, mine is on to tyte I think(it whistles like a super charger). I have a JDM H22a. I didn't descibe the problem very well...It bounces between 750-1900, it doesn't do it right when I start my car, only after it has warmed up a bit. Then sometimes it goes away after like 10 minutes. Other times like last nite, I drove my car for 1 1/2 hours and it was still doing it when I pulled in my driveway. thanks,
Josh

71dsp · 10-28-2001, 11:32 AM

Have you done the throttle body coolant bypass?

LudeTec · 10-28-2001, 11:36 AM

Yes I have,
Think I should put it back to normal?
Josh

71dsp · 10-28-2001, 01:42 PM

That's your problem. Return it back to stock, and the car will idle like normal.

I am surprised that no one told you that by now.

cantdrive55 · 10-28-2001, 01:45 PM

Quote:

Originally posted by 71dsp
That's your problem. Return it back to stock, and the car will idle like normal.

I am surprised that no one told you that by now.

hey billy, my buddy and I just swapped a JDM H22 in his car. And his idle does the exact same thing, but, he didn't do the bypass...any clue why it's idling stragely? Bad TPS sensor maybe?

71dsp · 10-28-2001, 01:53 PM

Check the IAC and make sure it's hooked up and working correctly.

Absolut · 10-28-2001, 05:49 PM

Im having the same problem.... I think it has something to do with the TPS sensor and the idle adjustment screw... Im still playing with it. I can get it to run normally if I adjust the idle adjustment screw, but it returns to the bouncy idle a little later...

jdmVTEC · 10-28-2001, 10:55 PM

i thought i was the only one with that problem..when i installed my JDM h22a my idle did the same thing..but it would do it until it warmed up and then stop...or it would just do it the whole time..and the wen i disconnected my EAVC it would stop but then wen i would try to drive it it would BOG really hard at low rpms...i nvever cud figure out wut it was and stll dont know wut it was...but no i have a Haltech system now and the EAVC is disconnected and it hasnet done it since but i still wana know since it bugged me soo much

NOSlude · 10-29-2001, 02:05 AM

yea my motor is doing it as well...

im trying a few things to try and figure this out but none have worked so far, grrrrrrr

prelude555 · 10-29-2001, 04:11 AM

hey i think i had the same problem b4. swap wit an h22a an it does the exact same thing. try cleanin out ur throttle out an see wut happen .it works on mines

LudeTec · 10-29-2001, 08:19 AM

Hey,
Well it was the Fast idle bypass that was the problem.

That mod worked fine with the h23, but it obviously doesn't work with the h22. It runs fine now!

Thanks guys,
Josh