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Jerk in rear end

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Old Feb 24, 2014 | 08:26 PM
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mcguire4202000's Avatar
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Jerk in rear end

I have my 2001 F150 XLT Supercrew 5.4 for two years now. This past weekend I changed the gear oil in the diff. using 75-140 per the tag on the diff. I also added the gear oil additive from my dealer per their instructions.

Here is where I found the problems. 1st when under the truck checking out the ujoints I found ATF all over the transfer case. I can't find where it is coming from. What places do I need to look?

2nd is now when I accelerate past 60mph and decelerate by just taking my foot off the gas I get a jerking which feels like its coming from the rear. I don't know what would be causing it.

I am a weekend warrior with a basic mechanic knowledge, so I am at a lost. Any help would be great.
 
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Old Feb 24, 2014 | 08:28 PM
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glc
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Welcome!

Introduction Forum Introduce yourself to the Community here! If you have a technical question, try posting it in the appropriate forum.
 
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Old Feb 24, 2014 | 10:22 PM
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aussiekeeper's Avatar
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Did you do the circle 8 oil break-in to distribute the oil and additive?
For the ATF leak, clean everything and take a drive, then check for a leak.
 
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Old Mar 3, 2014 | 09:28 AM
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From: In the fast lane from LA to Tokyo...
 
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Old Mar 3, 2014 | 09:44 AM
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Welcome to the site!
 
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Old Mar 3, 2014 | 10:05 AM
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Welcome!

Put a bed cover on that thing and you should get no more "jerks" jumping in for a ride!

Hope you find a solution
 
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