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F150 Slip yoke clunk

Posted on 5/19/14 at 2:18 pm
Posted by mpar98
Baton Rouge
Member since Jan 2006
8034 posts
Posted on 5/19/14 at 2:18 pm
anyone experience this from 1st to 2nd gear then back down when slowing? Seems like a pretty common issue in the f150 trannys
Posted by lsugolfredman
Member since Jun 2005
1844 posts
Posted on 5/19/14 at 2:20 pm to
My 2011 will occasionally make the noise. I haven't read anything to suggest that its impending mechanical breakdown. It past the warranty point so I'm gonna ride it out.
Posted by CBDTigerFan
Member since Mar 2009
2214 posts
Posted on 5/19/14 at 2:21 pm to
It's a ford obviously there's gonna be problems with it
Posted by Clames
Member since Oct 2010
16528 posts
Posted on 5/19/14 at 2:33 pm to
Wouldn't be the slip yoke, might be gear lash or something with the posi. Helps if you post details like what year, engine, transmission, etc.
This post was edited on 5/19/14 at 2:35 pm
Posted by Shexter
Prairieville
Member since Feb 2014
13824 posts
Posted on 5/19/14 at 2:53 pm to
How old is the truck?
That sounds just like worn out U joints.
Does it make a clunk when you shift from reverse to drive?
Crawl under the truck and rotate the driveshaft.
Look for any play in the joints.
Posted by Croacka
Denham Springs
Member since Dec 2008
61441 posts
Posted on 5/19/14 at 2:55 pm to
my 2010 would do that sometimes


its a common complaint on the forums....some owners say a computer reset allows the truck to relearn your driving style and it helped some people, but i dont know if i believe that
Posted by Clyde Tipton
Planet Earth
Member since Dec 2007
38719 posts
Posted on 5/19/14 at 3:17 pm to
I've been ignoring that for years on my 2009 f 150.

Good to know it's not impending doom...
Posted by Hammertime
Will trade dowsing rod for titties
Member since Jan 2012
43030 posts
Posted on 5/23/14 at 10:06 pm to
Borrowed my dad's truck for the evening, and I can definitely feel the clunk. It is more like a quick shudder, but feels the same way as a truck does when it gets axle wrap. The truck has 35,000 miles. My buddy has the same thing, but much worse. No unusual noises

Also noticed a vibration when sitting still in drive that felt like it was coming from somewhere behind the driver's seat in the driveline. No noise, just vibration


My dad's is a 2012 CC FX4 Eco-boost, and my buddy's is an 08 CC FX4 with 120k
This post was edited on 5/23/14 at 10:09 pm
Posted by Big_country346
Member since Jul 2013
3597 posts
Posted on 5/24/14 at 1:41 am to
My 03 chevy hasn't had a problem yet.
Posted by Kcrad
Diamondhead
Member since Nov 2010
54675 posts
Posted on 5/24/14 at 5:07 am to
How's the piston slap treating you?
Posted by coreybdx
Lockport
Member since Jun 2011
208 posts
Posted on 5/24/14 at 8:25 am to
Its the end of the driveshaft that goes in the rear axle that needs to be greased. happens all the time.
Posted by Clames
Member since Oct 2010
16528 posts
Posted on 5/24/14 at 9:17 am to
Your 03 Chevy has an anemic 10-bolt, that just means you don't have the torque or tow anything...
Posted by Reubaltaich
A nation under duress
Member since Jun 2006
4959 posts
Posted on 5/24/14 at 9:52 am to
quote:

Its the end of the driveshaft that goes in the rear axle that needs to be greased. happens all the time.



I think Ford sells some sort of special grease to put in the rear yoke.

ETA, check out TSB 4-23-7. Its some kind of white grease with teflon in it.

BTW to the OP. It would help with a year model, mileage and other info.
This post was edited on 5/24/14 at 9:59 am
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