I have a 89 f150 302/auto and one day after i came off a mudroad i had to take to get back to my hunting spot i noticed a slight vibration when i started to decelerate with or without brakes. Now the vibration can get pretty ruff but not all the time only sometimes. What do you guys think u joints?

 

Could be a out of balance tire or a broken cord in one of them, or it could just be some mud stuck inside the rim.. I have seen similar things happen with snow/ice buildup after plowing through deep snow in the winter.

 

Yeah and what seems weird is its not as bad when its raining

 

Check for mud inside the rim and rinse it out. Been there. Done that.

Also check to see if a wheel weight got knocked off or if the rim is bent if you were off-roading.

 

Thanks ill just wash it tonight.. I also should add that day as i was driving down the non-mud road i heard a loud clunk and it felt like i hit something. That has happened one other time since then also but i checked under the truck and all of the mounts seem solid and the u joints have no play so i have no idea what to look for and the hubs are unlocked