Idle problem - again !

[SaffronC70]

Hi guys

Had the throttle module replaced about 5k miles ago, however the idle has become inconsistant again

It's ok after a hard run (must be due to moving the throttle plate WOT) but crawling around and after parking manouveurs (spelling?!) the idle will hunt +/- 200 rpm.

Can I clean this out myself with a little hassle ? Can I idle the car without the boost hosing attached (so I can spray cleaner in) ?

Thanks

Chris

[SaffronC70]

Thanks for the input :p

To try and cure the idle, I sprayed in some Intake Cleaner through the aperture where a sensor usually sits, looks like a pressure sensor, at idle (this is on the plastic pipe that connects to the throttle housing after intercooler piping).

This made the idle solid again

Took it out for a run and everything was good - however, I let it sit for a few minutes to let the turbo cool down, turned it off, back on again and once again the idle hunts

Does anyone know what I have to clean inside the throttle housing ? Or do I once again have to go back to the specialist ?

Thanks

Chris

[SaffronC70]

Right, I took it one step further.

I removed the intake pipe and cleaned the inside, as best I could, the butterfly :



Also, can anyone identify what hould be on the end of the circled outlet ?!



I'm thinking it may of had a rubber cover on it ? But the recent boosting to 1.2bar all the time may have blown it off ?!

Thanks

Chris

[SaffronC70]

Sod's Law = idle was good today !

Can someone comment on the circled outlet please ?

Cheers

Chris

[SaffronC70]

Circled outlet is meant to be blanked off.



Quick vid of throttle plate action (commentry by nosey neighbour).

http://chriswhiteuk.pwp.blueyonder.co.uk/ets.MPG