When vehicle is jacked up, the front wheels would free-wheel and either can move or stop. If the brake on one side is sticking more than the other, the above would occur. This is normal.
Did you test if the revving only occurs in any particular gear?
Chocolate colored transmission fluids indicates the fluid is in bad condition and if the level is correct, you could have a failing transmission.
If fluid level is low, it can cause slipping as well.
Wednesday, March 14th, 2012 AT 2:29 PM