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So I noticed after driving from Brisbane to Toowoomba that my car almost stalls...

Basically its a 2 hour drive at 100km/hr and when you slow down to 60kms its fine but if I stop at lights or the revs drop real low the car shudders like its about to stall...

Is this a coolant issue or a sign that I need to get that FMIC already??

I drive about 30mins at 100km/hr twice daily and it does not do that so its only on those long drives, its almost at 110,000 on the clock, last service was 100,000

Well...cars are built to withstand idling with no air flow, excluding thermal fans, for hours on end without overheating or stalling due to heat. If your temp guage isn't through the roof, than i doubt it would be a heat issue. There's heaps of post up about stopping at lights stalling, so have a quick search. Most common being an atmo bov, aac valve issue, etc. You get the picture. Good luck.

Hmmmm, well my R33 GTST is 100% stock atm. So def not BOV issue. It only happens when the car is toasty after a long drive, normal driving around town does not get this issue at all.

Hmmmm, well my R33 GTST is 100% stock atm. So def not BOV issue. It only happens when the car is toasty after a long drive, normal driving around town does not get this issue at all.

You'd probly find that the motor is cooler after a 2hour drive @ 100km/h than it would be nipping around town :)

Maybe, I dunno like the turbo is hot hot hot. The only time I've done the drive and stopped (turn off the car) it wouldn't start for a few tries (didn't let it cool).

BUt its just strange, drive to Brisbane, hit the Ipswich road 60km area and any time I come to a stop it acts the dog until I've been driving that speed for 20mins (til I get to the north side).

I'll give the flush a try though.

  • 4 weeks later...

Stupid question, what does AAC stand for, and what does it do to control the idle? I have a similar problem (though in difference circumstances) where my car idles terribly, almost stalling right after starting it cold. Blipping the throttle fixes this though, but I'd rather not have to do that...Admittedly it's probably entirely unrelated, but thought I'd have a look while I'm here :P

AAC = auxilary air control. it opens and closes when things like the aircon is turned on or the steering is turned. it adjusts the idle to cope with the extra strain put on the motor by those things

you issue could be the cold start valve or the IAC (idle air control). i'd start with the idle control valve as it is much easier to get to and because of the fact that if you rev it it clears.

Well the car's currently in the shop getting the exhaust manifold gasket+studs replaced lol, so I think I'll give them a call and advise there's another thing to add to the list of "oh can you please look at this too? thx"

haha thanks for the info :whistling:

Troy it's really very easy to do yourself so if you haven't already called your mechanic, don't worry... just pull it off when you get the car back :)

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