hello everyone
i have a problem in audi a4. i hope some one can answer me and really appreciate it.
what it does....when u run the car some time and stuck in a traffic jam ( or when idling), the rpm drops down suddenly and then settles down (this is like a hiccup). This does not happen all the time.
also some times I can see on my tachometer that rpm goes slightly up to stop the engine being stopped (something like dragging)
I have been in audi and they replaced the air mass meter and it did not fix the problem.
Then I went there again and they said the throttle body is cleaned. But the problem still exists.
Please help me if someone came across this sort of problem.
Thank you