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Front End Vibration

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Old Mar 25, 2008 | 12:49 PM
  #1  
JamesT96GT's Avatar
JamesT96GT
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From: Gardner, MA
Front End Vibration

'03 Explorer Sport - I just checked all my Ball joints, U-Joints and CV joints. While up on the jacks we rotated the wheels & turned them left and right. After jacking it up and doing these things now when I drive the Front end vibrates/shutters to the point I feel it in the steering wheel. It is not all the time but it can happen when I turn l or R and or hit bumps in the road. What is happening. I noticed my front diff is leaking fluid out the pinion seal so I know I need to fix that. Could this be causing the shudder? Is the front diff a Limited Slip? I know the Rear is (D4 code and on Window sticker).

It's strange because the same thing happened a week ago when I had it up on jacks to check over things and when I first test drove it it shuddered turning right. It soon went away. Now it is even worse........ Please help!
 
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Old Mar 25, 2008 | 10:43 PM
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aquanaut20
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From: BC Canada
You have induced air into the steering system (moving steering with engine not running), turn the wheels lock to lock several times with the engine running at 1500rpm.
 
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Old Mar 26, 2008 | 07:44 AM
  #3  
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JamesT96GT
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From: Gardner, MA
Thanks aquanaut20! I had suspected this but no one around me thought that was possible. It makes sense because both times I had turned the wheels with the engine off. Also on my 40 mile ride home last night the vibration slowly went away. Just curious why a bump would induce this while driving. I may replace the sway bar bushings and such. A friend said this is also a common symptom of worn and dried bushings.
 
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Old Mar 26, 2008 | 11:20 AM
  #4  
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aquanaut20
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From: BC Canada
Originally Posted by JamesT96GT
Thanks aquanaut20! Just curious why a bump would induce this while driving.
The steering is a hydaulic system and oil does not compress, air however will, when you hit the bump, a front end ossilation was started and the air in the system was unable to dampen it, causing the shake.

Hope this helps.
 
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Old May 26, 2008 | 09:40 PM
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Just read this posting....that happened to me once. My alternator quit and the engine died just as I was trying to turn into the driveway. I kept turning the wheel to make it in. Then I had the shuddering too....I did your remedy and it got rid of the shuddering...
 
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