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Clunk or something ??

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Old Dec 3, 2006 | 10:13 AM
  #1  
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RobertJohn
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From: George West, Texas....
Question Clunk or something ??

I was in traffic yesterday in San Antonio, stop and go forever
or so it seemed.
Anyway, when I'd stop there was a clunk or something like it was "catching" up.. Again at start off, not every time but nearly. I put it in low and still it happened, I was thinking
TC or tranny but in low isn't the TC locked ??
Any ideas or suggestions ??
 
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Old Dec 3, 2006 | 11:20 AM
  #2  
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From: Elkhorn, WI
my guess would be the driveshaft. its pretty common in these trucks. they are two piece driveshafts and over time the splines loose their grease and stick when they should be sliding freely causing them to bind. try taking the rear driveshaft off and greasing the splines
 
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Old Dec 3, 2006 | 11:52 AM
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Where did it sound like the sound was coming from?
 
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Old Dec 3, 2006 | 11:55 AM
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From: George West, Texas....
somewhere in the drive line...i'm hoping it's not the TC or tranny..

to grease the drive shaft you just take it off at the diff ???
 
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Old Dec 4, 2006 | 08:22 AM
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From: North of Greenville
Same problem...

... in my older '96 Suburban. Mechanics suggested using vaseline as the lubricant, which is what they used in the dealer's shop. I haven't experienced it on my F250, but the symptoms sound exactly like those on my 'burb.
 
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Old Dec 4, 2006 | 12:41 PM
  #6  
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Sounds like classic Ford "Clunk" to me. Mine does it. Slip Yoke needs lubing. Check out this TSB

https://www.ford-trucks.com/tsb/full...p?tsb=05-26-10

and these threads

https://www.ford-trucks.com/forums/3...ive-train.html

https://www.ford-trucks.com/forums/4...unk-noise.html

https://www.ford-trucks.com/forums/4...xed-yahoo.html

https://www.ford-trucks.com/forums/3...k-i-guess.html
 
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Old Dec 4, 2006 | 05:28 PM
  #7  
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straycat-2
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From: Surrey B.C. Canada
Clunk?

I had the same sound in my dually, turned out to be the spare tire was lose in its well, and as i accelerated,it clunked back against the well. Just something else to consider.....Good Luck.
 
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