Idle Issues

[ICER33]

been trying to solve this dilemma.

at idle the revs seem to fluctuate up and down around 200 - 300 rpm. its really annoying and i know it cant be good.

so far i have tried resetting the ecu and cleaner the afm.

will i need a tune or is there some thing else i should try?

cheers

[arbess]

could it be the crank angle sensor? merry christmas

[blind_elk]

AAC Valve. Do a search on how to clean it.

[RB30-POWER]

as always start with an inspection for vacuum leaks.

don't have an atmo BOV do you?

[ICER33]

actually yes i do have an atmo bov.could it be this?

[RB30-POWER]

to test it, maybe do the spring tension up really tight, so that it can't open and see if the idle changes, otherwise check all other hose clamps etc are tight on any plumbing/piping that is after the air flow meter. make sure none are split either.

[R33_Series2Lover]

only one way to find out. just use the art of elimination and take the atmo bov off and put your stocky on.

[Mr Italy!]

Make sure the bolt holding the ECU wires into the ECU is tightened securely. I had this problem and the bolt was loose. Incase you dont know, the ECU is found to the left of the passangers feet, under the plastic.

Also, check the AAC Valve.

[rmahnovetsky]

Man I also have an idling problem - for 1.5 yrs still haven't solved it. Ive been through all the basics, these might help you, hasn't helped me .. like

Check all electrical contacts. squirt wd40 on all electrical contacts..

Could be the fuel presure regulator - do a swap .

clean aac valve. Swap with friend

clean, resolder afm

check for leaks - squirt carby clean on the hoses if the idle drops bingo. Soapy water should also do the trick but you will see bubbles instead.

make sure all sensors are working to spec. Do a search sould find what the sensors should read .

o2 sensors could be faulty.

BOV. I put a open atmo BOV and really screw my idle.. Took it off..

clean the injectors.. If you can take then out and get it ultrasonic cleaned.

check for fault codes

good luck