shudder seems to be fixed - Ford Powerstroke Diesel Forum
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Old 07-08-2009, 02:55 PM
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shudder seems to be fixed

My 2009 f250 lariat diesel 4x4 has shuddered since day 1.. It now has 2200 miles and the problem was presented to the Ford dealer..They did admit to a shudder problem,and did the "fix". The fix is rear end modifier fluid.. It seems to have fixed it ,but I was told to give it a couple hundred miles to really work.. The mechanic also said the rear end is only one of the places that could cause shudder,and if I was not happy to come back and he will look at it again.. I really thought I was going to get the run around ,but my dealer never even suggested that the shudder was normal..So far so good
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Old 08-18-2009, 06:34 AM
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Have same shuddder when pulling RV. Only on takeoff then calms down. Dealer says not normal for most trucks but not adnormal for my 2008 F-250 4x4. They say it is the lineup of the pinion and drive shaft on acceleration. I mentioned your resolve but they said that was for turning problems only, limited slip clutch problem.
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Old 08-18-2009, 01:41 PM
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Talking shudder fixed

The additive seemed to fix it at first,then it came back.. Went to the dealer and they pulled my driveshaft and greased the gears ,reinstalled the shaft and it has been shudder free for over a month ..
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Old 06-07-2010, 11:20 AM
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Mine does the shudder or thump taking off after a relatively quick stop, loaded or not. Wonder if this is the same problem. I hate taking it into the dealer as their stock answer seems to be "that is not a problem".
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Old 07-09-2010, 12:30 PM
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Adding friction modifier is only for limited slip diff and normally you only feel it when turning as the right and left wheels will be turning at different speeds where the clutch pak needs to let them slip smoothly. Shudder or a single thump on drive away may be the slip yoke on the drive shaft. Grease it with moly paste and see if it stops.
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Old 08-06-2010, 07:32 PM
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There ia a TSB out for this, bad u joint and driveshaft alignment while loaded.
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Old 08-28-2010, 05:55 AM
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Quote:
Originally Posted by fordfish View Post
There ia a TSB out for this, bad u joint and driveshaft alignment while loaded.
Yep TSB 9-20-5 issued Sep. 29, 2009
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