r33 starting but not idleing...usually when cold

[NYL83R]

I've searched the forums and can't really find my problem...

For awile now my r33 gtst has been playing up when cold, the car will start but then will stall straight away, or run rough and then stall. But then be ok if i kept trying and warmed it up. It was only doing this sometimes but lately it has got worse and started running rough and stalling even when hot.

sometimes this problem wouldn't happen for a couple of weeks??

The Blitz BOV i have on it was getting stuck open and shut, so i pulled it off last night and cleaned it, put it back on and the car ran fine. So i thought i had solved it, but this morning i went to start the car and the same thing is happening

Maybe this was just a coincidence that the car ran fine last night, cause i put back on the original BOV a minute ago and still no go (original came with the car seperate so not sure if its good, but it looks ok)

would a dodgy bov gasket cause problems? ( ie a bit flat or squashed)

Could it be a stuck throttle body, or stuffed air flow meter????

I am a bit lost now and not sure what to check next, somebody please help

[NYL83R]

I just disconnected the airflow meter and reconnected and the car started fine, but when i rev it it stalls, then when i start it again it starts dropping the revs then reving back up again...

So this could be my problem i think...

A bit strange that the problem usually only occured when the car was cold.

dodgy connecter or dirty sensor maybe?

[NYL83R]

well i pulled off the airflow meter and the sensor in it was filthy, so i blasted it with carby cleaner then after it was dry i gave it another blasting with electronic cleaner. Also cleaned the mesh on each end. now its running good, so try cleaning your airflow meter if anyone is having similar problems

damn, glad that is fixed, time for a beer

[Bazelinez]

hey dude, mine is doing this too...... i just cleaned the air flow metre so i'll see how it goes tomorrow morning!

[Bazelinez]

good work mate, I tried the same, cleaned the air flow metre and it starts straight away!

nice.....

[ASYLUM]

i had a very similar problem on my NA.

SST went over the whole car and ended up replacing the standard ECU with a Wolf ECU.

i am now getting quite respectable power but still using a bit of fuel and still having trouble with revs and idle... it's all mapped now so i don't use an air flow metre so i have no idea why it's doing this.

any thoughts are greatly appreciated as SST are quite stumped atm.