how do you adjust the idle speed, mine is currently running on the slow side, about 550 RPM to 600 i read that it should be 850+-50 rpm. idle is a bit lumpy at 600 RPM but when i put on the window fan the revs creep up to the correct RPM.

 

Try cleaning the throttle bodies - mine was the same and this worked. Go to:-

 

www.twinturbo.net/ttnettech/tb/tb.html

 

This will give you a run down on how to do the job properly - it only takes about an hour. Don't forget to reset the ecu afterwards - leave the negative off the battery for around 30 minutes. This will recalibrate the airflow meter for the 'cleaner' intake.

 

Hope this helps,

 

Andy

 

...reason why your rpm ups when fan on! Engine starts to over-compensate for the fact that you have the climate control on...quite normal!

 

Tim

;-)