"Clunk" on takeoff - Ford Powerstroke Diesel Forum
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Old 07-25-2009, 02:25 PM
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"Clunk" on takeoff

Does anyone know what the cause is for the "clunk" on takeoff from a dead stop. It sounds like the 2 piece driveshaft needs to be lubed up like I used to have to do to my 02 F250 every so often. Anyone had the driveshaft off and lubed up to see if that is the cause? Thanks.
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Old 08-18-2009, 02:58 PM
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clunk

Ny 09 250 stroke shuddered and clunked.. A rearend additive and a driveshaft removal and regrease fixed it for me..
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Old 08-18-2009, 03:48 PM
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i had a similar problem with my 03 removed the shaft and lubed the yoke and problem solved.
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Old 08-18-2009, 04:04 PM
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How hard is it to remove the drive shaft and regrease it?
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Old 08-18-2009, 05:20 PM
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Quote:
Originally Posted by Harleyman88b View Post
Ny 09 250 stroke shuddered and clunked.. A rearend additive and a driveshaft removal and regrease fixed it for me..

So you just regreased the 2 piece driveshaft? Any special type lube that you used? Thanks.
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Old 08-19-2009, 05:25 AM
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Quote:
Originally Posted by 03-blue-Powerstroke View Post
How hard is it to remove the drive shaft and regrease it?
Remove the 4 bolts holding the ujoint at the pinion and then slide out the shaft but make sure you mark it so you can line it back up the way it came out. you can get a vibration some times if not.
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Old 08-20-2009, 06:05 AM
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Is the clunk felt when stopping as well? (Just before you come to a complete stop)
What about when taking your foot off the brake to start up? Does it sometimes clunk then as well?

I have all these symptoms and my dealer has been unable to duplicate the problem three times now. They said that they lubed the slip joints, but I couldn't tell anything had been taken apart, etc....

I love the truck, but this is driving me crazy. 23k miles doing it now...
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Old 08-20-2009, 09:44 AM
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mine clunked on take off and stop. sounds to me like the guys that are working on it are complete idiots or are lying to you and are not doing anything at all.
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Old 08-31-2009, 08:45 PM
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So I tried to pull the driveshaft to lube the slip joint tonight. I took out the 4 bolts at the front of the slip joint and it would not budge. Next, I removed the 4 bolts from rear end and it would not budge either. How do I get the driveshaft loose so I can pull the slip joint and lube it?

Thanks,
JS
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Old 08-31-2009, 08:49 PM
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Remove the bolts from the front yoke, remove the straps at the diff for the u-joints. Then get out from under the truck. Put the truck in neutral and roll it forward a bit. I bet that driveshaft falls out.

Or using a pry bar remove the front yoke bolts and stick the pry bar up in there. It will pop out. Then remove the straps on the u-joints at the rear diff.
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