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[RiffRaff]

hi guys my
 2.0l manual petrol is givin me a headache. over the past few days i have done the cam cover gasket,changed the cam sensor, cleaned the small breather jet(dont want to do that in a hurry again hands like shovels an fingers like sausages), cleaned the icv. and cleaned the other breathers an last but not least the throttle body wich was caked in black crud the gaskets from the icv an throttle body looked ok no splits cant hear any hissing sounds to say there is a leak all done as per the info from this world beating site an the bloody thing still wont idle properly its goin up to 2K an back down to 500 ish its realy ticking me off anyone got any clues as to what to try next
thanks in advance
Niel

[PaulW]

Be worth checking the CTS (coolant temp sensor) and also the Lambda - they can affect fueling which in turn will affect idle.

[Grumpy]

Seeing as you've had loads of stuff apart, you need to retrace your steps.

1) Check your throttle cable is connected properly and that the butterfly has
    full and free movement and closes fully.
2) Recheck the 3 vac pipes are secured to the Throttle body and are in good
    condition. Especially the forward single vac pipe that connects to your
    fuel pressure regulator. This provides a variable base pressure to the fuel regulator
    depending on the vac pressure in the throttle body.
3) Check the large black intake trunking that connects to the top of the throttle
     body is squarely fitted to the the throttle body and the Maf sensor at the
    other end. Check jubilee clips are tight.
4) Replace the IACV gasket and check it's fitted the correct way round. It only
    fits correctly one way. The IACV mating face is not symmetric.
    If you can't get hold of one straight away, make a temporary one, using the
    old one as a template. You can use the thin cardboard packaging off a supermarket
    ready meal, or as I did, a thin sticky backed vinyl floor tile. Ensure the mating
    faces of the IACV and the throttle body are perfectly clean and flat.
    Remember that this is a 'get you home' temporary measure, so fit a new gasket asap.
5) Check your throttle position sensor plug is securely connected. The TPS is mounted
    on the side of the the Throttle Body, in line with the Butterfly spindle.
6) When you have the IACV off, replacing the gasket, recheck that there is no oil
    or cleaner still inside of it. Check that the IACV spring is returning the valve fully closed
     iaw the guide that I did.

Good luck. You will get there. It's just a process of logical elimination.  
    

[RiffRaff]

cheers
will double check it all in the mornin to dark an cold now

[nuclear onion]

If it helps, when I first got it, mine used to rev up to about 2500 when first started up.  It turned out to be the ICV gasket not properly seated although it appeared ok at the time.  Replaced the gasket and its been totally fine ever since