1990 f150 hesitation and shake
 

Hey everyone
I really need some direction here. I've done a tune up. Checked drive shaft. Brakes. And changed fluids. My truck will hesitate when putting in gear, in any direction. Reverse. Drive or park. Sometimes when I stop it almost feels like it goes into neutral, and it won't move unless I really give it some gas and rev the engine. It will also hesitate and shake at times when driving and changing gears. It almost feels like it only happens when I am coasting and press on the gas, like the engine is catching up to the speed? It is a automatic. The last symptom is that at times when slowing down I hear a rattle and it feels like the rear will shake and hesitate. Like it's having trouble downshifting. Ok. I think that's it. Thank you in advance for the help

Transmission check
 

Have you checked the fluid in your transmission? For level first, and burnt fluid as well. If you haven't done a service on the transmission I would look in that direction.