Having idling problems again.

When my car's cold and I try to drive it, it kangaroos everywhere.

When the engines warmed up a bit it idles fine.

When I've driven it for a bit it idles at about 1500rpm and after a little while longer it goes down to about 1000rpm but seems to be hunting slightly.

Any ideas?

I've recently cleaned the ISCV with carb cleaner so I don't think it's that

 

did you clean it fully? as in press the plunger in and clean the shit off the valve face part?

also check and wd40 up the plug to it and do the came on the co2 sensor

 

Yeah pressed the plunger in to clean it. I cleaned every moving part I could get to inside it.

Forgive my stupidity but where abouts is the Co2 sensor?

 

on the plate at back of engine bay where the EDIS is.
you wont miss it its a little black box with a silver flat head screw in it (dont touch the screw) and thats the sensor.

it could be other problems too, like coolen temp sensor at the back of the inlet as it might be telling the ecu its hot or cold when its not

 

i would suggest coolant temp sensor too. The haynes manual shows you how to test it

 

Ok, I will try these tomorrow in the day light.

Thanx for ur help

 

Have you checked the wiring to ISCV? If you have cleaned it properly that will be my next step.

 

Will check that as well while I'm at it.


Cheers

 

Thinking about it, would adjusting the screw on the Co2 sensor make it have this sort of problem or would that just affect emissions?

 

it can make a difference to the way it idles yeah, but it can effect emissions.
i wouldnt touch it if i were yo unless you got something to messure air fuel mix

 

I adjusted it once that's all but i counted the amout of turns and turned it back to where it was originally.