Rumble strip noise???
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Rumble strip noise???
I have a 1999 Ford F350 4wd, when ever i hit a sharp pot hole the front end feels like I am driving on rumble strips (lasts for about 40 seconds). Had the truck to the dealer, nothing found unusual with the bearings ,drive train, etc etc...
Looking for any sugestions or folks who have had the same problem...
Looking for any sugestions or folks who have had the same problem...
Posting Guru
Joined: Jun 2004
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From: just outside of Phila.
Can a sharp enough pothole change the actual shape of a tire temporarily? I know you can bang up a rim through a tire, but could it make some kind of mark in the tire that works itself out eventually?
Redmaple, I'm not sure what it is with yours, I'm just thinking out loud. Someone else will chime in soon enough. Welcome to FTE
Redmaple, I'm not sure what it is with yours, I'm just thinking out loud. Someone else will chime in soon enough. Welcome to FTE
Postmaster
Joined: Apr 2000
Posts: 2,881
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From: North of Tulsa, Oklahoma
That's an odd one. I'd be tempted to take one of the tires off, make sure it's inflated a little more than recommended. Then bounce it like a basketball on the driveway or cement pavement, to see if there is anything bouncing/rolling around inside the tire. If water, sand, old valve stems, rubber chunks, or other debris are inside and rolling, when you hit a hard enough bump they dislodge and move to somewhere else in the tire until about 40 seconds later they have moved into the natural balanced postion in the tire? I know it sounds crazy or like a long shot, but you never know. 
Posting Guru
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From: Virginia - SW (Riner)
Noise
Did they check the front wheel bearings?
I've heard similiar sounds when one/both of the bearings are on their way out. (Kind of a low rumble - w/ a little vibration sometimes)
If it's a 4x4 lock the front hubs in, drive it and see if the noise goes away.
DG
I've heard similiar sounds when one/both of the bearings are on their way out. (Kind of a low rumble - w/ a little vibration sometimes)
If it's a 4x4 lock the front hubs in, drive it and see if the noise goes away.
DG
Freshman User
Joined: Nov 2005
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From: Reno, Nevada
Had the same problem on my 99 F-350. Sound only gets worse, and it was the wheel bearings. Problem is ford only sells the entire front wheel assembly as a unit! Knuckle, stub shaft, etc. About 500 bucks and change from the dealer...apiece! I hear Dynatrac makes a unit that is more expensive, but MUCH heavier duty, and is a direct replacement.
Post Fiend
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From: Sarnia, Ontario, CANADA!
Thread moved from General Automotive Discussion and merged with existing thread. 
-Matt
P.S. Welcome to FTE!
-Matt
P.S. Welcome to FTE!
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FTE Leadership Emeritus
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From: Long Island USA
Originally Posted by dagren99
If it's a 4x4 lock the front hubs in, drive it and see if the noise goes away.
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Krewat is on the right track, had the same problem last year, the noise would disappear when I turned on the ESOF 4x4 shift and would not happen if I switched the front hubs from AUTO to MANUAL. The right side inner spindle (axle support bearing) was shot, replaced it ($12.00) and the problem was resolved. Good luck, Merry Christmas !!!
Kevin
Kevin
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Joined: Mar 2004
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From: May Township, MN
I had a similar problem earlier this year with the 99 F250 Super Duty. The ball joints were replaced at 150K miles and at 190K miles the problem started.
When ever I hit a bump in the road I got a noise out of the front driver side that sounded like the noise your wheels make when going over an overpass or bridge. The noise started like a hum got got louder over a one month time frame. A bump would also make the noise go away.
One day I took the hub assembly off and brought it to Ford to have a tech inspect it for wear. The tech said it looked okay but it wouldn't be bad to replaced the race bearing on the outer section. I then brought the hub to the parts department and asked about buying the race only and was told I couldn't buy it, only the whole hub assembly! Going on the advice of the Ford tech I cleaned the hub and applied some grease to the race bearings put the hub back on and all has been good, now have 209K miles and no more noise.
When ever I hit a bump in the road I got a noise out of the front driver side that sounded like the noise your wheels make when going over an overpass or bridge. The noise started like a hum got got louder over a one month time frame. A bump would also make the noise go away.
One day I took the hub assembly off and brought it to Ford to have a tech inspect it for wear. The tech said it looked okay but it wouldn't be bad to replaced the race bearing on the outer section. I then brought the hub to the parts department and asked about buying the race only and was told I couldn't buy it, only the whole hub assembly! Going on the advice of the Ford tech I cleaned the hub and applied some grease to the race bearings put the hub back on and all has been good, now have 209K miles and no more noise.
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Originally Posted by kbodge
Krewat is on the right track, had the same problem last year, the noise would disappear when I turned on the ESOF 4x4 shift and would not happen if I switched the front hubs from AUTO to MANUAL. The right side inner spindle (axle support bearing) was shot, replaced it ($12.00) and the problem was resolved. Good luck, Merry Christmas !!!
Kevin
Kevin
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From: USA
As krewat has said,where your front axle shafts go through the wheel bearing assm. is a set of needle bearings.these go bad from not being lubed.
When you hit a bump it causes the bearing and shaft to grind and catch causing what you are feeling.
Take his advice and chk it out soon or you will spending bigger $ in the long run.
Rich
When you hit a bump it causes the bearing and shaft to grind and catch causing what you are feeling.
Take his advice and chk it out soon or you will spending bigger $ in the long run.
Rich
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From: May Township, MN
Originally Posted by dougger222
I had a similar problem earlier this year with the 99 F250 Super Duty. The ball joints were replaced at 150K miles and at 190K miles the problem started.
When ever I hit a bump in the road I got a noise out of the front driver side that sounded like the noise your wheels make when going over an overpass or bridge. The noise started like a hum got got louder over a one month time frame. A bump would also make the noise go away.
One day I took the hub assembly off and brought it to Ford to have a tech inspect it for wear. The tech said it looked okay but it wouldn't be bad to replaced the race bearing on the outer section. I then brought the hub to the parts department and asked about buying the race only and was told I couldn't buy it, only the whole hub assembly! Going on the advice of the Ford tech I cleaned the hub and applied some grease to the race bearings put the hub back on and all has been good, now have 209K miles and no more noise.
When ever I hit a bump in the road I got a noise out of the front driver side that sounded like the noise your wheels make when going over an overpass or bridge. The noise started like a hum got got louder over a one month time frame. A bump would also make the noise go away.
One day I took the hub assembly off and brought it to Ford to have a tech inspect it for wear. The tech said it looked okay but it wouldn't be bad to replaced the race bearing on the outer section. I then brought the hub to the parts department and asked about buying the race only and was told I couldn't buy it, only the whole hub assembly! Going on the advice of the Ford tech I cleaned the hub and applied some grease to the race bearings put the hub back on and all has been good, now have 209K miles and no more noise.
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I am going to check this out tomorrow. Can someone please post a picture of what needs to be greased/cleaned/lubricated or eventually replaced? Many Thanks in advance. I am a novice mechanic not familiar with all of the lingo (but, I was able to install the premium warn hubs without a problem). Keeping them locked keeps the noise away.
Happy New Year!
Happy New Year!
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Well, I think I may have solved my problem, replaced both hub assemblies (Parts from Advanced Auto $225 a piece) and 4 new shocks. So far nearly 800 miles and not even a suggstion of a rumble noise. I have traveled some of the same roads that caused the problems in the past.
The old hubs still looked tight from my visual inspection, no loose races or rollers on the bearings..
At this point, I am considering the job done and noise eliminated.
The old hubs still looked tight from my visual inspection, no loose races or rollers on the bearings..
At this point, I am considering the job done and noise eliminated.
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