When driving at very low speeds, or moving of from a stationary position, the gearbox occaisionally suddenly feeds in the power and it feels as if another car has hit the car in the rear.

It is a very hard imapct.

Also, I have found that sometimes the gearbox finds a neutral if I trail the throttle around a corner and then hit the gas hard.

I assume this must be a gearbox fault, but wonder if it is software or could be a mechanical problem

 

forgot to mention

S80 manufacture year 1998 - 48k miles

 

I do not think software will help, but may be available.

This car is a 1999 for sure, it may be the trans.


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Could it be the valve body coz a fren of mine had the similiar issues...after changing the valve body......the trans is damn sssmmooooothhhhh