Discussion
My Chim (sometimes) won't idle smoothly -especially when the car is cold. When I first start up it is fine, but after a minute of so of driving it will no longer idle smoothly.
Instead it will fluctuate between 1000 & 2000 rpm (as if I am revving it myself), then after 20 seconds or so it will rev up to about 2500 rpm and then will start to idle correctly.
However as soon as I move off again, the next time I come to a halt the same thing happens.
I know 99% of problems are caused stepper motor - mine a recent replacement (previous owner) and has cleaning it (regularly) hasn't helped.
So:
i) Is this lumpy idling normal?
ii) Is it the stepper motor?
iii) What else could it be?
It's not a major problem, but it doesn't half intimidate the average Gti driver at traffic lights as I appear to be constantly revving the engine
Instead it will fluctuate between 1000 & 2000 rpm (as if I am revving it myself), then after 20 seconds or so it will rev up to about 2500 rpm and then will start to idle correctly.
However as soon as I move off again, the next time I come to a halt the same thing happens.
I know 99% of problems are caused stepper motor - mine a recent replacement (previous owner) and has cleaning it (regularly) hasn't helped.
So:
i) Is this lumpy idling normal?
ii) Is it the stepper motor?
iii) What else could it be?
It's not a major problem, but it doesn't half intimidate the average Gti driver at traffic lights as I appear to be constantly revving the engine
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