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Shudder when turning from stop only

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Old Nov 14, 2010 | 03:30 AM
  #16  
megafordf150's Avatar
megafordf150
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Hey all
I just bought a 2004 f150 Supercrew XLT and the Mechanic that owned it had replaced the Dif with a Limited slip unit. He told me that it shudders when turning.. which it does and he also told me that he has tried everything to get it to stop with no success. I think he is a pretty strait up guy as well as a good mechanic so I was wondering if you guys have any words of wisdom for me.
Thanks in advance.
 
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Old Nov 14, 2010 | 03:38 AM
  #17  
Skip1970's Avatar
Skip1970
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From: Semper Fi tell I die!
Originally Posted by megafordf150
Hey all
I just bought a 2004 f150 Supercrew XLT and the Mechanic that owned it had replaced the Dif with a Limited slip unit. He told me that it shudders when turning.. which it does and he also told me that he has tried everything to get it to stop with no success. I think he is a pretty strait up guy as well as a good mechanic so I was wondering if you guys have any words of wisdom for me.
Thanks in advance.
change fluid

add friction modifier

if that dont help then rebuild your limited slip clutches.
 
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Old Nov 15, 2010 | 08:33 PM
  #18  
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greg1971
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Originally Posted by megafordf150
Hey all
I just bought a 2004 f150 Supercrew XLT and the Mechanic that owned it had replaced the Dif with a Limited slip unit. He told me that it shudders when turning.. which it does and he also told me that he has tried everything to get it to stop with no success. I think he is a pretty strait up guy as well as a good mechanic so I was wondering if you guys have any words of wisdom for me.
Thanks in advance.

If you are going to change the diff. fluids then use 75W140 synthetic fluid and add 8oz of friction modifier. I had a shudder in mine and I added just 4 oz. of the friction modifier and cleared it up 90% but changing the fluids would be ideal. You should also change the fuel filter every 30K miles and change the transmission fluid (especially if towing) every 30K with synthetic fluid.

Hope this works for you.
 
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