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weird vibration while driving

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Old Sep 18, 2007 | 02:35 AM
  #1  
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Exclamation weird vibration while driving

hello...i have a 2002 supercrew f150 4x4 with the FX4 package.....this thing is driving me nuts i had the universals checked all is fine and everytime i have the tires checked for balance they are always out in the front but the vibration feels like its from the back...even after is rebalanced it starts alll over again ...it actually feels as though one of the tires is egg shaped but i have changed them recently and its still there...i am completely lost here ...please help before i jump off the next bridge
 

Last edited by budtrain; Sep 18, 2007 at 02:37 AM.
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Old Sep 18, 2007 | 08:07 AM
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when does the vibration occur? highway speed or normal city crusing? both maybe?
 
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Old Sep 18, 2007 | 11:05 AM
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What type of brakes do you have? I believe after 00, Ford put disc brakes in the back, but I'm not sure.

I would check the condition of everything in the rear end -- U- Joints, the axle splines, the differential gears, leaf springs, and the condition of your brakes. If you've got disc brakes and your rotor is warped, it'll cause that egg-shaped feel. I've got the same problem on my 97, except it's the left front rotor that's bad.
 
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Old Sep 19, 2007 | 08:08 AM
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to me it seems worse when i first start driving it at low speeds but it actually is there all the time...its weird the other day i drove it and could barely notice it...like i said its driving me nuts
 
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Old Sep 19, 2007 | 08:10 AM
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i had the u joints checked and replaced all the rotors and pads on the back....its a freaking mystery to me....it sometimes makes me want to trade it in...but i do love this truck
 
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Old Sep 19, 2007 | 09:02 AM
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well sience you had the tires replaced, what brand are they? and even though you have had them balanced they may have excessive road force. that means there may be an imperfection in the tire that while normal balanceing will not catch, you will still feel it while driving. this can usually be checked at local tire shop or at a dealership. take it back to the place that put the tires on and see if they can check it for you. i see alot of NEW tires lately that have excessive road force.
 
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