Audi A4 b7 TDI bpw engine misfire after 2 min running.


New member
Oct 29, 2020
2.0 tdi 140hp bpw
Hi Guys, I'm new to the group and I'm happy to be posting here, I had a problem with my a4 2.0 tdi b7 140hp (bpw) for the last 3 months.

I'm about to give up with the car so I wanna take the last shot here if you can help me to find the problem.

The problem:
When I start the car and start driving, it does normally, but after 2 minutes sometimes 5 minutes, suddenly starts misfiring and run on 2 cylinders or 3. The weird thing is when I switch off and on, it comes back to normal, and does it again.

I've changes several parts already like, wirining loom, Turbo, auxiliary belt, new battery, I've cleaned injectors many times with liquids and diesel purge, also new fuel filter and Pump.

The second weird thing is, I bought the car with this problem but after a few months of driving it it dissapeared, but came back again ( after a misfuel).

What do you suggest me to try next?

All help will be welcome !