cold start stall... help please

[mumbles]

hey people,

have had this problem for a while now. when i start the car from stone cold then if i don't keep some revs up, using the pedal then it splutters and dies... if however i sit there and keep the revs up at 1000/1500 for about one minute then it runs like a dream, never cuts out and  idles perfectly until it's left to go completely cold again...

i thought it may have been the lambda sensor so had that replaced but problem is still there. I have recently cleaned throttle body and replaced several parts of the ignition system.

any ideas?? thanks for your help

mumbles

[gtigolfthree]

maf sensor.

[mumbles]

replaced that, and water temp sensor.

cheers tho, any other ideas?

[Khare]

was gonna say clean the throttle body, but you've done that already.

Try resetting the ECU

[gtigolfthree]

and have a look here
http://www.golfgtiforum.co.uk/index.php?topic=101400.0

[mumbles]

cheers mate, have used that page many a time 

@ Khare, does that involve disconecting the battery for a certain amount of time?? if so, how long?

[Khare]

yes mate. disconnect for 30 minutes, then connect back up, then turn ignition on but do not turn the car on for 5 minutes, then with the ignition still on turn the car on for another 5 minutes. Do not press the throttle at all at any time, let it idle for 5 minutes. If you have the cold starting problems then do this when the car has been run for a while so it starts when you reset it without having to hold the accelerator.

[mumbles]

cheers, will go and try this just now.

feel free to keep throwing ideas though 

thanks for the speedy replies 

[DAVEMARX]

probally an pbvious 1 but have you changed the dizzy cap or give it a clean i had the same problem and gave the rotor arm and contacts a good clean with a screw driver coz i couldnt get the old rotor arm of   'still cant'

dave

[mumbles]

yep, thats all been cleaned and replaced recently, but will have a look.

its an odd problem because its just for the first sort of minute and then it's fine. i'm presuming it's some kind of sensor that needs to heat up or something.... but the lambda sensor didn't sort it.