weird thump/thud when braking or accelerating - Ford Powerstroke Diesel Forum
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post #1 of 7 Old 12-30-2010, 09:55 PM Thread Starter
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weird thump/thud when braking or accelerating

it just started doing this and i cant figure it out. when i come to a stop and the truck rocks back to settle and it thuds. if i take of suddenly it thuds. it feels like its in the rear end but i cant be certain. almost like axle wrap but the opposite. not sure how else to explain it.

00 F250 auto 6" lft/37" toyos,riffraff frx,riffraff hpx,riffraff plenum inserts,riffraff IC couplers,riffraff AIH delete,riffraff pre-filter,GS gauges,turbomaster WG,WW,DIY intake w/AFE bigboost,tru-cool tranny cooler,magtec tranny pan,BD diesel built tranny.
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post #2 of 7 Old 12-30-2010, 10:25 PM
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check you axle "u" bolts, i see you have a lift.

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post #3 of 7 Old 12-31-2010, 06:12 AM
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Possible motor mount

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post #4 of 7 Old 01-01-2011, 08:08 AM
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Did you look at Clunk, Thud, Bump, Double Bump, Thud on take off, Spline Grease Job thread?

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post #5 of 7 Old 01-01-2011, 10:32 PM
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Not sure if you have a crew cab or not. But I had the same problem. It was the carrier bearing in the rear 2 piece driveshaft. Its in the middle of the two mounted to the frame. Kodi


Put the truck in netural , block the wheels and get under it and push on the drveshafts. If it has slop. it needs to be changed

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post #6 of 7 Old 01-02-2011, 09:32 AM
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Quote:
Originally Posted by cghoerichs View Post
Did you look at Clunk, Thud, Bump, Double Bump, Thud on take off, Spline Grease Job thread?
yes this was my problem
some grease will fix it

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post #7 of 7 Old 01-08-2011, 06:45 PM Thread Starter
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Quote:
Originally Posted by cghoerichs View Post
Did you look at Clunk, Thud, Bump, Double Bump, Thud on take off, Spline Grease Job thread?
yes and i think thats it.

00 F250 auto 6" lft/37" toyos,riffraff frx,riffraff hpx,riffraff plenum inserts,riffraff IC couplers,riffraff AIH delete,riffraff pre-filter,GS gauges,turbomaster WG,WW,DIY intake w/AFE bigboost,tru-cool tranny cooler,magtec tranny pan,BD diesel built tranny.
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