Hi, I have audi a4 1.8T 2003. I need some help with codes: 16684 P300 and 16685 P301, When the car starts, it runs great/normal for a while but after short time it starts to shake. It has no power, I can't drive it.
I changed spark plugs and coils and also checked plug wires(which I think wires look good). I changed fuel filter little more than 1 year ago.

I did erase DTC CODES couple times but they still come back.
When the car shakes I turn it off and turn it back on and it runs ok for a few minutes,then it starts to shake again.

I checked vacuum line but it looks fine.

Can someone tell me what else I can do??? I tried basically everything I could.


Thank you
Rado