Faulty valve body?
The Auto on my oldman's EF has stated to thump into gear. When your giving it some stick sometimes it changes hard and the car kicks a bit sideways, or when backing of at the end of 2nd it can thump into 3rd.
It doesn't do it all the time, but I'm thinking that this could be a faulty valve body. It started doing this after I serviced it so it seems a bit strange to me.
Does this sound like the valve body to anyone else?
How much is a valve body worth?