[Mk2] [Turbo] Very odd Idle

[Tiny]

well i have done a search and couldnt really find anything to help.

My Rev2 tubby when warm its almost like it carrys on trying to warm up the car and idles anywhere between 1100 to 1800 i have checked for loose connections and error codes but nothing apart from flashing everything is ok my coolant is at the right level and my oils allright.

I honestly dont know what else to check. Anyone got any ideas or suggestions of what to check or possible causes.

[GT4kid]

Could be your idle stability control valve. Check the electrical plug to it and give it and the terminals a clean.

[Caribbean_Blue]

1) Thermostat bust? Is your fuel consumption worse than normal?
2) Throttle body blocked
3) Idle control valve adjusted too much?

[Tiny]

1) Thermostat bust? Is your fuel consumption worse than normal?

Not really about 260-300 a tank depending on driving

2) Throttle body blocked

hope not will check before i drive home.

3) Idle control valve adjusted too much?

[/quote]
never even touched it now and again it will go back to normal 850 is that the screw in the AFM?

this morning i have had some proper weird boost fluctuations too add to the equation

[Driftlimits Performance]

It's worth removing the throttle body and giving it a clean up. Take of the idle control valve and make sure the holes and magnet is free of gunk.

If you CERTAIN there isn't any air leaks the idle can be adjusted by a flat head screw just above the inlet on the throttle body.

[Tiny]

Found the problem

Basically the HKS inlet adapter seal big square of soft rubber that sits behind it and goes onto the mating face of th AFM there was no cut out for the Idle port at the side and when the rubber had got hot it had bent and covered the idle port one quick dissasembly cut rubber for the port a thorough degrease clean and relube later

1 perfect 800rpm idle

cheers for the advice and help chaps.

[Pirate]

Perfect Fix , nice one !