View Full Version : Lets off gas hard, turbo sometimes flutters

01-28-2011, 10:32 AM
It seems like my 99 A4 will be fine under full throttle, but at mid throttle it seems to restrict, and sometimes on the edge of boost the turbo will spool a little, then let off, and spool a bit again and sort of chirp throughout. Also when
letting off the throttle it really seems to hit a wall and shudder. Any idea what problems im looking at?

01-28-2011, 10:35 AM
DV has a problem. Either the vacuum line to it or just plain old failed.

Well at least according to your title. The other symptoms I'm not sure.

01-28-2011, 10:37 AM
I don't really understand what you're trying to say in the description but according to your title I'm going to say the diaphragm in your diverter valve is starting to tear.

EErie B6
01-28-2011, 10:38 AM
all of it seems like DV to me. like maybe the vacuum line came off.

01-29-2011, 12:44 PM
Seems like general consensus is the DV, I will check it tonight. Finding it wont be a problem, but I am fairly new to the site and Audis though, anyone have an idea where I can get a copy of the service manual free for my A4?