ironmachineus

I just took my '00 A6 2.7T 6spd to the car wash. When I pull away, the ESP and Check engine light come on. The car is in limp mode with no power, but it drives smoothly. I drive 2 miles home, and when I arrive, the car idles, but the gas pedal won't accelerate the engine - it's like it's disconnected. So now it's halfway up my driveway and I can't drive it up. What gives here? Did something short out from the carwash? Did something come loose? I don't have access to one of the VAG tools.

A6Fiend

Hmmmmm. I had similar. Mine after wash lost speedo (needle all over the place) and when you let off throttle, car decelerated with a jerk. Car was fine the next day.

Gotta be water in a connector.

ironmachineus

Well here's some more information. After reading some posts on the DBW system, I started the car, took off the parking brake, tapped the brake and the gas a few times and voila! The engine revved again. I put the car back into the driveway. Both lights are still on. 30 seconds later I decide I should swap my wife's car (in the garage) with mine. I start up and pull in. Both lights still on. Turn off. Oops, didn't pull in enough. Start again - this time the EPC light is NOT on, but the Check engine is on. I checked all the tubes, connectors and hoses that I could easily get to from the top of the engine and there's nothing wrong that I can see. So I throw up my hands and park it. What to do about the light? Should I be concerned if it doesn't go away tomorrow?

One other thing struck me - as I was pulling away from the car wash, I had my hand brake on for about 6 feet by mistake. It was during this time that the lights both went on. I dropped the handbrake and drove home. Is there any relationship?

Cole 2.8Q

Why would you drive your car through one of those? I never have,,,never will. Always wash by hand...even in these cold winter days (5 degrees here today).

dougaross

<center><img src="http://pictureposter.audiworld.com/63657/dcp_1610.jpg"></center><p>I think my bucket is under that pile of snow

ironmachineus

Well, it turned out to be a bad throttle position sensor. They have to order a part but it will easily be fixed. Thanks!

A6Fiend

and I am not as young as I used to be. Touchless wash will have to do in the winter.