Turbo Boost Pressure Servo Motor
I heard back from the dealership today.
The service tech is pointing to the boost pressure servo motor (black box), same issue that Billy had. The tech did not find any hose leaks or disconnected parts. I have yet to speak with the tech to determine how he diagnosed the servo motor failure?
Am I to understand that when revving the engine sufficiently, one should see the boost pressure servo motor linkage move? Inactivity of said linkage is the diagnosis for boost pressure servo motor (black box) failure?
There was some mention of a possible boost pressure sensor by tnadanzig earlier in this thread. Any thoughts on how to diagnosis if the boost pressure sensor was failing?
Billy or anyone else willing to share their source for a new boost pressure servo motor (black box)? I'd much prefer spending $200 vs. $4,000.
08 GC CRD, GDE, CBE
04 Audi A4 Avant 3.0, JHM, Revmax TC
15 Audi A3
16 Audi A3 S-Line