2004 - 2008 F-150
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Old Sep 14, 2005 | 12:26 AM
  #16  
garscott's Avatar
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Joined: Jan 2005
Posts: 124
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From: Southaven, MS
04 Lariat xcab 4x4
LS 3.73

Occasional shudder at >65mph recently (at 11,000 miles). Decreased the tension on my rear-end active suspension and decreased psi in tires to 35 (was 36) and shudder is nearly gone. Still going to have the dealer look at it tomorrow.
 
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Old Sep 14, 2005 | 08:13 AM
  #17  
higdogg's Avatar
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Joined: Jun 2005
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From: TN
seems like most everyone has the limited slip axle, doesn't seem to matter which gears though. I have the 3.55's. Doesn't seem to matter 4x4 or 4x2, or '04/'05. So those of you w/ clutch packs replaced, do you think that the clutch packs just originally needed to be looser? And some have said theirs almost quit the shudder after several thousand miles, maybe like the clutch packs loosened up? I don't really know anything about that.
 
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Old Sep 14, 2005 | 09:11 AM
  #18  
BEW119's Avatar
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Joined: Jun 2004
Posts: 248
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From: EDISON, NJ
04, LS, 3:73, 4X4
Had the shudder first thing in the morning, while moving forward and on a tight turn.
The clutch packs were replaced and no more problem. For what its worth, the mechanic stated this would not cause any further damage, it is more of an annoyance.
Also, from reading this site, it appears that the clutch packs are grabbing, which they are supposed to do, just a little too tight.
 
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Old Sep 14, 2005 | 10:09 AM
  #19  
Tun2One's Avatar
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Joined: Nov 2004
Posts: 434
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From: Tulsa
3.73 LS 4X4

Have shutter both straight and turning. I've purchased a Detroit Truetrac to replace LS. We'll see if this does anything. Dealer says Ford working on fix.
 
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