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.
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
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 ?!
I didn't remove the throttle housing completely, as bad weather is starting to set in.
Can I remove the housing by presumably undoing the bolts around the housing to hold it onto the manifold ?
What do I need to clean inside the housing - or will this become clear upon disassembly ?
I'm a maintenance technician (hull baggage xray equipment) so I'm pretty confident in breaking, I mean fixing (!) things !
Thanks
Chris
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http://chriswhiteuk.pwp.blueyonder.co.uk






