Lack of power due to throttle system fault on Audi A3

Problem Description and Possible Solution

A lack of power may be noted and the Check Engine Light illuminated with various throttle system fault codes stored. Our technicians tell us this is generally caused by electrical connection issues at the throttle body. If this is the case a harness repair kit is available from Audi.

Problem Data
RepairPal Verified
Average mileage: 83,400 (66,000–115,000)
4 model years affected: 2006, 2007, 2008, 2010
13 people reported this problem
Viewing 1 - 3 of 3 comments
My vehicle sounded (still does to be honest) like a tractor trailer & not even the dealer could tell me what the problem was. I noticed a lag in acceleration & the check engine light was on. The dealer said it was the clutch &changed it all out. Guess what, the vehicle was still loud as heck. I figured if the dealer gavethe car a full once over it had to be what they said it was & kept driving my loud little car. One day while driving the car just lost all power. After getting the car towed to a mom & pop shop I was told the throttle body needed to be cleaned. After the service the car at least started but it was still sluggish but I figured I just made a poor choice in the vehicle I purchased & would have to get rid of it ASAP. That was 8 months ago & I'm still driving it, the vehicle is starting to hesitate & do all the same things it did last time I had car issues. Some places say it's the alternator but I've never seen a bad alternator cause this type of problem. I think it's the throttle body again.
When driven in high traffic zones and attempting to accelerate from full stop, no response from accelerator peddle. However, engine is still running at idle speed. Sounds like it may be throttle body problem. Once it "catches" acceleration is normal and car runs as normal.
I have a 2007 Audi A3 2.0T FSI still stock and the car has no power, I have replaced, Turbo, Intercooler, Injectors, replaced all rings on from the chain cover and replaced the vacuum pump gear, Changed DV, no boost leaks, also checked Hoses and Pipes between Components and no leaks, Replaced Boost Pressure Control Valve ,Replaced Diverter Valve, Replaced Throttle Body,Checked for Vacuum leak(s) including PCV system but no luck.

I am out of options now as I still get the same error : Pressure Drop between Turbo and Throttle Valve (check D.V.)

Please help