Driveline noise

[Plowboy]

Sometimes I hear a thunk in the driveline or transmissinon when it shifts from 1st to 2nd of more commanly when it shifts from 2nd to 3rd. Local ford dealer said this is normal (some sort of drive clutch in tranny) . It sorta sounds like slip yoke play or U joint problems. Does any one else hear this noise in there rigs?

 

[powerboatr]

i see we had a network error

any way i wil try again
my dealer told me it was a normal part of life. i have to agree with 15 k on the odo it still shifts solid and makes a clunk sound of something engaging,
tow haul is freaking a kick downshifting loaded, them ujoints take a beating

 

[Kleetus]

yeah my oh 6 every once in a while tries to bunny hop first gear in T/H mode.

I also got a rather disturbing crunch the other day going from reverse to forward. I got out and looked to see if there was something hanging down under there. It's done it a couple of times since too.

It almost sounds like a bolt that's loose pulling through a hole. I also have driveline vibration at 20 and 40 mph... I'm thinking these two might be related..