Loud vibration/grinding in SD
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Loud vibration/grinding in SD
Please help,
I've picked up a loud, intermittent vibration in the driveline or suspension of my 99 F250 4x4. Typically it starts when I hit a bump at lower speeds (5-40mph) and stays until I stop or slow down. Best way I can describe it is: It's like driving over tightly spaced road reflecters or rumble-stips. Sounds like it's coming from the front end, but not sure. I can feel it in the steering wheel and seat and hear it clearly with window down.
Much worse than a typical balance or alignment problem and getting worse by the day. It's pretty scary - almost as scary as taking it the dealer and not knowing what's wrong!
99 F250 SD 4x4 Supercab Diesel
Auto trans
Manual hubs and shift
LSD
4" lift
35" BFG tires
40K miles
I've picked up a loud, intermittent vibration in the driveline or suspension of my 99 F250 4x4. Typically it starts when I hit a bump at lower speeds (5-40mph) and stays until I stop or slow down. Best way I can describe it is: It's like driving over tightly spaced road reflecters or rumble-stips. Sounds like it's coming from the front end, but not sure. I can feel it in the steering wheel and seat and hear it clearly with window down.
Much worse than a typical balance or alignment problem and getting worse by the day. It's pretty scary - almost as scary as taking it the dealer and not knowing what's wrong!
99 F250 SD 4x4 Supercab Diesel
Auto trans
Manual hubs and shift
LSD
4" lift
35" BFG tires
40K miles
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
Likes: 20
From: Washington State
Loud vibration/grinding in SD
[updated:LAST EDITED ON 20-Jan-02 AT 05:00 PM (EST)]I take it you've checked that your hubs are in the correct position for the street? Does it do it when 4 wheel drive is engaged? Might as well start with ruling those out...
Let's see, a mild 4" lift, 35" tires...well, I would still check to see if a Toyota Echo or Geo Metro is stuck under there.
Let's see, a mild 4" lift, 35" tires...well, I would still check to see if a Toyota Echo or Geo Metro is stuck under there.
Senior User
Joined: Jan 2002
Posts: 234
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From: Moriches USA
Loud vibration/grinding in SD
robbie, your problem is a manufacturing defect by Ford. I've got an early 99SD 4X4 5.4 5sd 4.10 manual hubs delivered in July of 98. The problem your having is your hubs trying to engage while your driving. Try this! Engage one hub at a time to see it the vibration goes away, then try the other. It's a quick fix that'll let you drive the truck untill it's fixed. My truck started having this problem at 18K. I drove with one axel engaged for 8 months waiting for Ford to reenginer parts and fix my truck under warranty. You would think that they would have changed both sides because of a defect but they didn't. The other side went around 60K. What your lookng at is change of hubs, rotors, bearings and axels because the splines are ripped off. There was no recall, but some dealers ( not mine ) replaced trucks to customers for this reason. Robbie your looking at some big bucks here so if you bought it from a dealer mention this and they might throw you a bone for the very quiet recall. Good Luck! Trimman
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Loud vibration/grinding in SD
Thanks Trimman,
Not exactly the answer I was hoping for, but a damn good one none the less. Thanks for arming me for the battle. Let you know how it comes out.
Thanks again,
Robbie
Not exactly the answer I was hoping for, but a damn good one none the less. Thanks for arming me for the battle. Let you know how it comes out.
Thanks again,
Robbie
