unstable idel and running very rich (R32 GTR)

[druzilla32]

hey all..

My GTR's idel is all over the place..

when its cold it seems to stay around 1200rpm..

then when i start driving and stop at lights etc the idel creeps up to 2000rpm.

it will then slowly drop down to around 1000rpm and bounce up to 1400rpm etc.

the car is also running very rich..

i have replaced the afms, and the O2 sensors with no success..

any ideas?

[druzilla32]

where is this acc valve i have read about? it might need to be cleaned???

[Rolls]

its on the top at the back of the intake, near the firewall, theres a small solinoid with AAC written on it, this and the metal part that its attached to needs to be removed. Soak it in petrol for a few hours, or even better carby cleaner.

[druzilla32]

ive actually found it..

on a gtr its actually under the plenum

i spent ages looking around the back of the plenum near the firewall