My 2004 TT just developed this high pitched whine at low speeds like 25-30mph in 2nd/3rd gear. It's not real loud by annoying enough with the cabrio top down. Any ideas what this might be , or what to do to fix it?

 

Could be transmission bearings. Does it sound different on deceleration? How about when you ease the clutch out on a downshift?

Jon

 

Does the sound go away when you put the clutch in?

 

Sound stops when I depress clutch. Also, noticed the clutch pedal a bit hard to depress upon start up. Once started it is fine. I have been reading hear about power steering reservoir valve issues with similar symptoms. Anybody know the cost of such a repair if this is the diagnosis?

 

Belt tensioner pulley.

 

Sounds like you have both the power steering reservoir and clutch slave and accumulator problems at the same time. Gonna cost you a few bucks.