R33 rb25det idle issue

[Lockyb123]

Hey guys I've had a problem with my r33 for a while now, If the engine gets hot  (on a cold day this wont happen unless the car is thrashed) it will stuggle to idle most of the time resulting in it stalling when not under load but if I put the ac on it will idle at the normal range for about a minute then go back to stalling

Edit: If i change down gears slowly it will not stall when i stop, But if i suddenly press the clutch or put it in netural whilw stopping it will stall also the car does not have an afm

Edited March 29, 2020 by Lockyb123

[Blakeo]

Aftermarket ecu? 

[Lockyb123]

 Yeah mate it's got a stinger ECU but I don't think that's the problem because the cars had this setup since I've owned it and it started having this issue about 6 Months in to owning it (also had a tune from a well respected tuner in my area since which did not fix the problem)

[MoMnDadGTR]

I had an issue like this on my rb26 was iacv valve was right plugged up and caused the engine to stall when turning, lights on, a/c on etc. I don't know about your rb25 but could be the case if it idles fine when cold. also theres a screw on rb26 iacv that you can adjust I don't know about your setup but have you tried turning up the idle a bit in someway either through ecu or manually? what does the car idle at on a cold day when warmed up?

[Lockyb123]

Problem solved i adjusted the  idle control screw

[John iatrides]

Sometimes they need cleaned also. Mine did the same thing just took it out and cleaned it and reinstalled for anyone else having issues.