I am looking for some guidance. I have a 1.8T AGU. Last night it was driving fine with no problems what so ever and hass been fine for a while now. This morning jumped in (after a very heavy nights rain if that makes a difference) and it appears to be running on 3 cylinders. It idled a bit lumpy and on pulling away just felt like it was on 3 cylinder, pop, pop, pop, and very very little power.
I was on my way to work so pulled over and unplugged all the coil packs, gave them a blow and plugged them back in with no difference at all. Didn't think it would, but can but try.
I'm at work so have no chance to look today and will call out the rac later to get home (and hopefully they will diagnose or fix it) but if not I will have to.
First thoughts are to run the car and unplug each coil pack in turn to see which one is not sparking due to change in engine sound. When i see which one it is, check spark plug and I guess replace coil pack? Although I thought the coil packs on the AGU were pretty sturdy? Other then that i guess wiring? maybe rubbed through somewhere?
Just seems odd it would happen over night if it was a wiring issue.
I will also plug it into the VCDS-lite when I get home.