maybe you need a transmission fluid change??? For starters....
I had a similar problem with my 420SEL over the summer, trying to accelerate and the RPM's would go up and up while the vehicle wouldn't accelerate at all. Fluid change seemed to solve the problem (for now)
I had a similar problem with my 420SEL over the summer, trying to accelerate and the RPM's would go up and up while the vehicle wouldn't accelerate at all. Fluid change seemed to solve the problem (for now)