Noiseless tranny "clunk/jerk/bump"? - Ford Powerstroke Diesel Forum
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Old 03-21-2010, 09:03 AM
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Noiseless tranny "clunk/jerk/bump"?

I've read some posts about this problem I'm having and I'm hoping I fall into the same "issue and fix." It's hard to explain, but at first take off, I feel a slight bump or jerk, almost like a shifting feeling (of course it's not shifting) within the first 2-3 seconds of FORWARD movement. There is no noise or clunking/ metal clank sound, totally quite except for the feel. No one seems to notice it but me unless I point it out. It will definitely happen after I've backed up and then shifted into drive and go, but like I said, no noise, just the slight "bump" feel within a couple of seconds of forward movement. I've been under the truck, driveline feels tight, no real play at all. I'm reading this may be solved by some serious lubing of the driveshaft? Where? Man, what ever happened to zerk fittings, not a single one under there? Anyway, does this sound like a known issue and fix? Thanks. (Oh yeah, 2004 F350 CC w/ auto tranny and 199K miles and still rolling )
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Old 03-21-2010, 12:45 PM
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When was your last flush/filter service on the tranny?
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Old 03-21-2010, 01:33 PM
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Had the same problem with mine. It is a simple fix. Need to grease the slip yolk. Remove the rear drive shaft, be sure to mark the exact positions of the ujoints so they can be re-installed the same way. Grease em up and put it back together. Problem solved.

Got this info from someone else here on the fourm just the other day!!
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Old 03-21-2010, 08:13 PM
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My last tranny flush was around 130K. It's on my list of "to do" things, but I haven't got to it yet, planning on doing it before the weather starts getting hot that's for sure. Lack of slip yoke lube then right? I was hoping that was what folks were going to say. I'm guessing the slip yoke is under that rubber bootie thing right? Why didn't they just do some zerk fittings? Thanks for response.
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Old 03-21-2010, 08:23 PM
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Uhh, don't I need to use some special "super duper" ford motorcraft lube for this? Seems like these trucks only want "special" ford only made stuff.
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