Posting this about my wifes car I just bought her, we were driving a couple weeks ago for a long drive on our way back home as we came off the highway it started jerking as it was going into 2nd 3rd gears I think in between 0-80km beyond this speed we did not experience it, I changed the transmission fluid and filter 4 weeks ago no problems until 2 days ago she was driving and told me it happened again, I did some searching on the net and found out it could be a transmission pressure sensor? any info would be great thanks guys!.