neverlack

I also found out that one of my injectors is apparently over fuelling ever so slightly, such a small bit that it's not worth getting changed just yet. It's still good for a good bit but will need changing eventually. It's still gonna be a hit or miss since it's gonna be 1 new and 3 old. Injectors are a delicate thing on TDI's but hopefully we both get it fixed 🙏

Well, after picking the car up, I got a check engine light. He diagnosed it again and the error code P0190 came up, for the fuel pressure sensor. That is the part that was replaced. He turned it off and removed it. This morning, when heading to work my check engine light popped up again. The initial problems I was having were gone, bar some minor shaking when idling the cold engine that seem to go away once the engine is all heated .

UPDATE -- It has been fixed!! The problem was the fuel pressure control valve (PCV) along with the fuel pressure sensor. It was a 500 quid job. After reinstalling new parts, it worked like new! Power restored, better fuel efficiency and no more jerkiness in lower gears along with no more rough idle/shaking!

I got a call back from my mechanic, he pinned it down to either the fuel pressure regulator or/and sensor. I was thinking either MAF, throttle body or pcv. I'll find out more tomorrow when he does further testing

Thanks for the reply! The car has 269.000km (145.000miles i believe). Oil is always fine, and the exhaust is perfect. I was suspecting a vacuum leak or a faulty MAF sensor, or PCV valve. I have taken it to the mechanic today for an in-depth check, it has been 7 hours since and no update so I'm hoping it's nothing too serious...

Hi guys. So I have had a couple problems with my 2011 Audi A4 sline. Whenever I am idle, the car shakes and the rpm needle will dance between 900-1000. The car is also very jerky in 2nd gear when rolling, and in 1st gear it stalls. The shaking wasn't so bad at all for the past month. Took it to different mechanics on 4 different occasions. They plugged a computer in and had 0 faults. Couple days ago, I called my usual mechanic to ask him to at the very least inspect my injectors. He said I have nothing to worry about again. Today when driving back I experienced the problems above. Car was serviced 1000km ago so it's not a matter of filters or old oil etc. If anyone has anything to help it would be greatly appreciated, thank you !

Gonna reply to maybe revive this post, I'm having similar troubles on my 11 plate..

Hey, I an having similar issues with my '11 A4 Sline 2.0 TDi. Just like you, my vibrations are clear when i accelerate and let go. Sometimes, the car will shake when cold, when it's warm it will still shake but ever so slightly. Had it serviced, did the same procedures as you and no luck. Any updates on yours? Thanks!