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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

Thumping sound

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Old Jul 14, 2022 | 09:38 AM
  #1  
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bvieages
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Thumping sound

I have a 07 250 6.0 with 146K miles. Recently it developed a thumping sound that sounds like it's coming from right behind the driver seat. I have put additional supports under the jump seats, removed everything that isn't nailed down, been underneath checking and pulling on everything. Took the rear shocks loose to see if they had gone bad. Has anyone else run into this problem. It gets very irritating after a while. Thanks.
 
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Old Jul 14, 2022 | 10:40 AM
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Usually cab mounts.
 
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Old Jul 15, 2022 | 10:49 AM
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The other thing to look at would be the driveline center support bearing.
Look to see if the rubber has cracked around the bearing.
 
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Old Jul 18, 2022 | 01:41 PM
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S&B silicone mounts -- take the truck thru a place that will twist the body some, like a driveway entrance or crossways (45 degrees) to a speed bump
if the mounts are bad the twisting of the body will make all sorts of interesting sounds
 
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Old Jul 20, 2022 | 02:57 PM
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check your anti roll linkage, when they wear out, they clunk
 
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Old Jul 20, 2022 | 03:38 PM
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Originally Posted by Mich6.0
check your anti roll linkage, when they wear out, they clunk
I forgot about that. Mine was doing it until I got a new set of front bushings for the bar.
They are easy to put in being a split bushing that you just slip over the bar and two bolts for each
clamp that holds them in place.

I have not had to do a rear set yet. I think they are more or less the same thing.
 
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Old Jul 27, 2022 | 08:49 AM
  #7  
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Thanks for the info

I looked and the cab mount bushings look deteriorated. Is this a fix i can do myself ? If so, is there something in the Tech manual that has a "how-to"? Thanks again for the help.
Bryan
 
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Old Jul 27, 2022 | 10:00 AM
  #8  
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Lots of videos on You Tube. Check the video on S&B site, yes you can do it yourself with some effort. Note that S&B will not warranty if you do it yourself according to their site. I ordered a set and will have them installed as i have no flat driveway, and it will be over 100 degrees here for the foreseeable future. I will do a lot on my own but not willing to roast to do it.
 
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