I have a strange misfire problem that I cannot find a thread on anywhere else.
Every time I take my foot OFF the accelerator and coast I get multiple cylinder misfires. No misfires on acceleration and car feels great. This happens on cold starts and when warm.
VAGCOM results show:
4 Faults Found:
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-10 - - - Intermittent
16687 - Cylinder 3: Misfire Detected
P0303 - 35-10 - - - Intermittent
16688 - Cylinder 4: Misfire Detected
P0304 - 35-10 - - - Intermittent
16685 - Cylinder 1: Misfire Detected
P0301 - 35-10 - - - Intermittent
Usual checks have been made. Leak test done, all ok. Coils packs are one year old. All genuine. Spark plugs are new. New MAF.
I'm getting fuel pump changed next week, so hopefully it could be that. But lambda values all look ok and rich up nicely under boost. Wouldn't a dodgy fuel pump show incorrect lambda values??
Anyone else had similar problem? (I know it's a long shot!)