Grinding floorboard vibration
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Joined: Jul 2007
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Grinding floorboard vibration
Hello all. I have a pretty good vibration going on in my floorboard. I start to get it at around 55mph, and it is VERY pronounced at 60MPH +, at approx 2000 rpm. If I really step on it, I can feel it too. But with just normal in no hurry accelerating, I get the vibrations at the speeds above. I have had the front shaft u joints replaced. All of which I can be greased now. Transfer case has good fluid quantity. I had the guy check the rear shaft too, and it was fine. Would the front wheel bearings do this? There may be a hum as I feel the vibration. I know I have a ripped boot on the drivers side outer tie rod end, and I have to keep greasing it. Perhaps this may be an issue. Though I do not feel anything in the steering. It is all under my feet. Any ideas? Has anyone had anything like this? All of my searches have pretty much focussed on u joint issues, and a drive shaft guy checked and repaired them as needed. Thanks, TOM
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Joined: Oct 2003
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From: MICHIGAN
Did this start happening right after the front u-joints were replaced? If so, take it back to who ever did it. They may have missed something.
If you have a 2 piece rear drive shaft the center bearing and/or slip joint can cause some wierd vibrations.
If you have a 2 piece rear drive shaft the center bearing and/or slip joint can cause some wierd vibrations.
Senior User
Joined: Apr 2006
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From: I-45, Texas
I am not sure with the 4wd Ford, but I have burned out a 2 wheel bearings in some dodge 2wd, and it kinda sounds like running over the little rumble strips on the shoulder of the road, but doesn't do it constantly, UNTIL the race is gone and the bearings begins to weld itself together, this has been ny experience.
But, since acceleration has an effect on it, I would bet its the carrier bearing in the rear driveline, from my experience.
Good Luck
ra
But, since acceleration has an effect on it, I would bet its the carrier bearing in the rear driveline, from my experience.
Good Luck
ra
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I have not figured out setting up the signiture yet. I have a '97 F350 4x4 w/7.3 Turbodiesel, AOD, auto hubs.
No it is not in 4 wheel drive, and hubs are unlocked. The vibration was there before u joints were worked on. The drive shaft place checked both front and rear shafts and repaired fronth shaft issues. The rear was fine. Sounds like I could use a second opinion on the drive line. I will have to check exhaust.
No it is not in 4 wheel drive, and hubs are unlocked. The vibration was there before u joints were worked on. The drive shaft place checked both front and rear shafts and repaired fronth shaft issues. The rear was fine. Sounds like I could use a second opinion on the drive line. I will have to check exhaust.
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Tuned
Joined: Oct 2006
Posts: 358
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From: Broken Arrow, Oklahoma
sounds just like the rear u-joint to me. best way to check is put the truck in neutral with the parking brake set. Grab you drive shaft looking at the ujoint closely twist. If you see any slack in the sides of the ujoint then its bad. Most of the time its the ujoint that is closest to the rear. Especially if you have a singlecab 350 like mine
Post Fiend
Joined: Oct 2003
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From: MICHIGAN
Originally Posted by jetflyr
I have not figured out setting up the signiture yet. I have a '97 F350 4x4 w/7.3 Turbodiesel, AOD, auto hubs.
No it is not in 4 wheel drive, and hubs are unlocked. The vibration was there before u joints were worked on. The drive shaft place checked both front and rear shafts and repaired fronth shaft issues. The rear was fine. Sounds like I could use a second opinion on the drive line. I will have to check exhaust.
No it is not in 4 wheel drive, and hubs are unlocked. The vibration was there before u joints were worked on. The drive shaft place checked both front and rear shafts and repaired fronth shaft issues. The rear was fine. Sounds like I could use a second opinion on the drive line. I will have to check exhaust.
I'll bet your trans is an e4od.
Welcome aboard.
Last edited by Cuda_jim; Jul 5, 2007 at 12:05 PM.
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Joined: May 2007
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I have something similar happening. IT sounds like a grinding comming from underneath my feet.I can hear it and feel it. It does not happen constantly only when I have been on the throttle hard pulling steep grades. Mine is the TC, I am almost certain. Just something to think about. I have the same pickup you do without the auto hubs.
Just a newbies 2 cents
Just a newbies 2 cents
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Originally Posted by c00nhunterjoe
not to be stupid but what do your tires look like? jack up your frt wheels and check the bj's and bearings, and you cant do a signature till 20 or 25 post
