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C20LET - High Idle?

4K views 27 replies 13 participants last post by  rodgerq 
#1 ·
Car is driving great, but I have one problem that is bugging me.

The car (when warm), idles at 1500 rpm. :mad:

When the engine was fitted in the Cavalier, it idled great at 900-1000rpm, but after we removed and refitted the I/C and radiator in the astra, it wont budge from 1500. :confused:

No airleaks anywhere & got a new lambda sensor.

Tried a mates Dump Valve last night, and this had some affect, but the car 'hunted' a bit and kept dieing?

What should I look into to cure this?

:beer:
 
#27 ·
i think we came to the conclusion that a stuck ICV would cause this but you would only get an ecu light on later motronics.
 
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