I've got a '97 F150 ext. cab 4x2 but, I'd like to keep my Bronco for the winters here. I think I've got a rear end problem but, that's why I'm asking. When I accelerate it shudders bad. When I let off the gas and coast it quits. Transmission rebuilt two years ago, low miles on it and no problems. Any ideas? Thanks

 

Try U-joints first.

 

Someone posted awhile back that their slip joint in the shaft was causing a wicked shutter, it was dry and a quick greasing cured it.