I have a 97 ranger ext cab XLT automatic with O/D. When I accelerate from
1st to 2nd, there is a slight hesitation followed by a loud "Clunk" that practically gives me whiplash. Same thing on deceleration. Other gears is fine, so at highway speeds, it's good, traffic jams it's friggin' painful. I've taken it to a transmission shop 3 times and they've changed 2 switches and the "brain" but it hasn't gotten better. It seems to be OK first thing in the morning, worse as it warms up. Any ideas?