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Lumpy idle when cold


PCGB Member

Had this issue for a while now. No check lights have come up.
The issue starts when it comes off cold start then hunts around by around 200 to 300rpm.

I asked Hatfield to look at it but got a standard response that they are all like that. Cant compare to any others but my last 997 did it and eventually started throwing CEL.

Car is under Porsche approved but have been told that if they don't find something I will have to foot the bill. Clearly I don't want parts thrown at it.

Wondered if anyone else had had similar issues? And also recommend alternative dealers around Herts area. Happy to go to Reading, Silverstone etc if they are any better


I think my C4 idles about 200rpm higher for 10-20 seconds before dropping down after being started but I haven’t noticed it hunting.

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