Hi Laurence

I have the same / similar issue with my car and have tried several things – all to no avail. Hence if anyone has any ideas in this area, then advice would be much appreciated.

I also note that when the car is stood on tick-over, pressing the accelerator causes a slight hesitancy from the engine before it picks up. As you say, while driving, this manifests itself as the engine dipping momentarily prior to it increasing in revs.

Kind Regards

Mike