Hey there again guys. I am also getting a rattle that can only be felt along the driver floorboard on my 99 F-350 4wd. Its a 4dr long bed. Inspecting all the components underneath in that area but just can seem to find anything loose. I even went as far as regreasing the front driveshaft. The rattle does vary with rpm and does become affected when i apply the brakes. It almost sounds as if i had a loose exhaust pipe directly underneath my feet. The sound is a little deeper in sound though. Any help? Thanks

 

Have you checked your exhaust down pipe? I know its on the wrong side, but it could be hitting the frame rail or trans and causing vibrations.

 

That sounds like a good idea. i will look into that soon. thanks

 

The dreaded swaybar bushings come to mind also. If you still have the stock ones on there, that could be your problem. Check the upper and lower mounts real good.

 

X's 2 on what Mike said..... Sounds alot like what I have and Im needing to replace my bushings as well..... Good luck

 

X3 on swaybar bushings

 

You guys are the best! Thats the problem. Thanks a bunch for your help. Ill get that swapped out before this weekend. Now ill be able to continue to go on my vacation to the river. Thanks agian guys. -Sal

 

Find out if yours is an early 99 or late, superduty4x4 Chase had a problem finding his size bushings, seems the early and late had different size bushings and hardware but here's a link where I got mine, any dout, give them a call first.. Heres the 99 but not sure if its the early 99 size, somebody will chime in.. http://www.energysuspensionparts.com...ight+Duty+1999

 

This Guy has a good write-up on doing them: http://www.frontiernet.net/~jmray/F250Bushings.htm

A press is very helpful for pushing out the end link bushings. Make sure you get the right set. I got mine from Energy and only thing was it did not come with the large washers shown. Waiting to hear back from them.