ok i have a 94 touring, well it all started after a few runs at the local track. now when crusing along i'll let off the gas and coast and then a hummmmmm sound comes from the tramsmission and then when i get back on the gas the sound goes away. when i coast for a while the sound gets lower in pitch the slower the car goes. does any one have a clue what the sound is and how to fix it? also when idoling i hear a gear noise from the transmission and when i tur on the ac it gets louder. any clue on that either? thanks guys.

 

any change when you depress the clutch?

 

none

 

It doesn't explain all your symptoms, but check your tranny fluid level. When I had my clutch changed, they first didn't put enough fluid in and I got weird whining noises. (Then they overfilled which made it hard to shift...) Anyway, maybe if you had a little leak in your tranny, the track time took enough out to cause it to start making noises.

But the AC is really odd. Maybe you have a bearing going out in one of your accessores?