Postby praise » May 13th, 2009, 6:24 pm
Do a diagnostic, that way you will be able to know if something electrical or mechanical wrong with it. More likely, its a speed sensor, as you say it does not slip. However, you cannot rule out hard seals. So try a transmission stop leak to soften the seals in the transmission and if problem persits after 100km of driving, do the diagnostic.