I have a 2000 5.4lt triton v8 xlt...So this weekend im giving my truck a tune up and changing the ball joints and shocks. I'm driving on the highway and when I get up to 50-65 mph my truck starts to feel rough! But it doesnt feel like the engine. I feel it in the floor boards, so Im thinking the ball joints are about to go cause ive put them off for a while. Then I thought maybe the transmission? But it shifts fine, no hesitation or anything. No knocks or banging. No jerks on take off or when I slow down. It has been raining alot lately but I dont think that would effect anything. And it ONLY feels this way when I get to 50-65 mph. Has anyone else gone through this? If so please give advice. Thanks.

 

if it feels like it is going to throw you out the window, try shocks...

 

I'm changing my front shocks tomorrow anyway! But why does it only do it at high speeds???

 

well shocks have a hefty job and i guess by the shocks not absorbing the constant impact.. lol

I am not real sure but i have had a couple cars do it in the past, 55-60 or when you hit a set of railroad tracks or something and just get with it, to the point you think it might throw your butt out the window..

does it stop when you decelerate?

kind of crazy never really made sense to me..

 

Yes, it does stop when I slow down!!!

 

sounds like mine did , hopefully it is the shocks.. come back and say if it fixed after you change them tomorrow.. got me curious lol

 

possible a tire problem.. if they are out of balance they will shake.. and usally at higher speeds...

 

yea a broken steel belt as well..

 

That is word for word what's going on with me when you find out please pm me. Isk wtf is going on

 

Well everyone, I changed the front end shocks and changed the sway bar bushings and it went away! I'll be sure tp re-post to everyone if it should some how come back.