I have the "sounds like driving on a rumble strip when I hit a bump" problem. I've read through the many threads about it on other sites and I'm trying to narrow down the cause for mine. There are many, many suggested causes and no one seems to come back to declare what it actually was.
I got under the truck to try to check for play in the front end assemblies and found something weird. It's a seal between the front, passenger side wheel knuckle and the hub and it's just hanging loose. Also when I push on the knuckle, there is a lot of play. Here is a video that can show this better: https://www.youtube.com/watch?v=TGsCZ8gluJI
Another important thing: I just had the front wheel hub assemblies replaced 3k miles ago. Here's a copy of my receipt for the work: http://magnatecha.com/_media/20160412010058.png
Anyone have any thoughts on how to describe and fix the seal issue and if it could be causing the noise when I hit a bump?
Info about my truck:
1999 Ford F250 extended cab 5 spd manual transmission Gas V10 4x4
- Acceleration and breaking do not cause or stop it
- The pitch of the noise changes as I slow down
- If I stop completely, the noise does not occur when I start moving again