Car Revving Up And Down On Idle

[KRiMiNaL]

for some reason my car revs from 500rpm up to about 1500rpm when the cars idleing. What could be the problem? vroom vroom vroom, only started doing it oon the weekend

[aaronrb25det]

thry letting the car idle, unscrew the idle adjuster on the manifold,and spray alittle bit of carby cleaner in it.might help.

[TommO]

thry letting the car idle, unscrew the idle adjuster on the manifold,and spray alittle bit of carby cleaner in it.might help.

<{POST_SNAPBACK}>

Idle Adjuster? As in the screw near the back (firewall) side of the manifold?

[bilbo117]

im interested in this also, my car will do this sometimes. is ok after a spin on the block but is still very annoying.

[Robo's]

Do you guys have a power FC?

[2BNVS]

i have this atm, due to no bov...

ben...

[krzysiu]

Was this happening when you had the heater or air conditioner on? also causes things like rpm going nutz at idle

[bilbo117]

no power fc, no venting bov, no heater or ac.

Edited October 7, 2005 by bilbo117

[syx]

I get that somtimes (very rarely). It has a powerfc.

It goes away almost as soon as I start driving

[spx25t]

I believe but I could be wrong but with the RB motor the Idle Varies when there is a leak in the inlet somewhere whether from a hose clamp or somehting. check all hoses and clamps and so forth and it should fix the problem.

But having said that I could be SOOO wrong it is not funny.

[KRiMiNaL]

Running Haltech E6x

[MonstaS4]

If you disconnect the AAC valve connector, does it settle down?

[BookyVL]

Anyone got to the bottom of this?

[mass_iv]

i dont think it could be an air leak in the inlet, as i have this problem also, however i have changed all plugs/clumps and seals in the inlet side when i was changing the injectors.... i was thinking this is related to the AAC valve somehow, as most people having this prob have eliminated the possiblility of it being caused by the BOV etc..

[bilbo117]

hmmm a picture on how to disconnect the aac valve thingy? wats it do?