Hi all

Right, my astra 1.7cdti, had a problem with hunting/ rough idling cold so replaced the SCV and has stopped it, thing now is randomly it will idle rough when you stop, ie of a motor way up to traffic lights and run rough fora few min then settle.

It's done it once this morning when i got to the shops and it did it there as I parked, run rough and then settled.*

Not sure what it could be, thought the EGR valve maybe.

Any ideas welcome.

cheers simon

Hi, just hoping someone has any thoughts on a rough running issue. The car is a 2015 Astra J GTC SRI with the 2.0 diesel (A 20 DTH). Everything was fine before the last service 3 weeks ago, since the service the idle from cold start is rough with fluctuations of 50-100 rpm and when it's particularly bad there is a knock from the engine almost as though the timing is being advanced.

[color=#333333]The issue is at it's worst in hot weather but can occur at any time from a