Warm Idle Breakdown

[Binofski]

Hey Guys,

Got a problem with my car atm that is doing my head in. It's a Series 2 R33 GTS-T with the only mods being a full exhaust.

Basically what is happening is when the car has reached its normal operating temp, (about half way on the temp gauge) when i stop at a set of lights for example it will idle fine for a minute but then the revs will drop from say 7-800 down to around 500 so the car feels like it is going to die, and then pick back up again.

Also when it is doing this if i put my foot on the throttle just slightly the car will almost stall out before coming back more aggressively to try and stay alive.

The car has been lacking its usual power lately and seems to be hesitant at certain stages throughout the rev range.

I have done a full wet and dry compression test, the dry coming up as 155 - 157 across all 6 and the wet as 175-176 across all the cylinders so i know thats all good.

Im considering taking it to someone with a cable to plug in and see if any error codes are coming up.

Would be a great help if anyone could suggest anything.

Cheers

[payback21]

BOV leak and not fully closed? Throttle position Sensor up the poo or loose and its moving. There only little screws holding it.

Just a few thoughts. Not sure if it will help you.

[Binofski]

BOV leak and not fully closed? Throttle position Sensor up the poo or loose and its moving. There only little screws holding it.

Just a few thoughts. Not sure if it will help you.

Hey mate, yeh i will double check that tonight. Only thing thats doing my head in is that it only happens when its warm.

[scotty nm35]

Cleaned the AFM? If the car is cold it runs rich, yours probably runs too lean at idle once warmed up.

If you have no mods it will probably be the AFM.

[Doobs]

Click me

this should help

[mosquitocoils]

+1 for AAC valve clean

[TDRZA]

my mate has the same problem in his 32gts-t...but i think the idle goes from 700-1000..his BOV is hidden so maybe leak?

[Binofski]

Doobs, that fixed the warm idle problem! car is sooo much smoother especially when i come on and off the throttle.

Still having problems getting full power i think i need to check on my afm though i only cleaned it a few weeks ago... Car seems hesitant to pull hard through the rev range

[Binofski]

Well managed to fix it all up now, ended up being that I'd moved the Cam angle sensor from its original position thus changing the timing

But pulls hard to redline now, thanks again to all who helped out!