Rear end bouncing
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Posting Guru
Joined: Aug 2012
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From: ALPHA ,NJ
Rear end bouncing
I've been chasing this for longer then i can remember. At 40-45mph the rear end feels like its bouncing. no movement from the steering wheel, just a pulsating bounce
Little information about the truck: Has had Napa Gold shocks, Bilstein 5100s and currently Monroe reflex shocks. Installed readylift 4inch rear block kit about 2 years ago. Had 16x9 rims, currently has factory 16x6.5. Tires are 285/75s. New pads rotors and calipers. It's just driving me nuts to have it bounce all the time.
Little information about the truck: Has had Napa Gold shocks, Bilstein 5100s and currently Monroe reflex shocks. Installed readylift 4inch rear block kit about 2 years ago. Had 16x9 rims, currently has factory 16x6.5. Tires are 285/75s. New pads rotors and calipers. It's just driving me nuts to have it bounce all the time.
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Posting Guru
Joined: Aug 2012
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From: ALPHA ,NJ
I don't think i have a carrier bearing, I have a 1 piece driveshaft? unless i'm thinking of the wrong thing.
are there tests for the driveshaft or bent axles?
Where would the bearing be?
I have suspected the driveshaft, I'm usually at 1300rpms at 40-45mph. Would it be the balance, or the U-Joints, as far as i know they are original from factory.
Postmaster
Joined: Jul 2015
Posts: 4,392
Likes: 22
From: very South Texas
for wheel/tire/axle.. lift rear end (both sides) start engine and put into gear.. SLOW..
from rear of truck watch carefully at tire for small up and down .. each side.
or place a piece of plywood between driveway and tire.. make sure you have 1/8 inch space.. if tire makes contact or 1/8 inch increases .. there is the problem.
you have a Short Bed.. you may NOT have a carrier bearing... I am not sure.
from rear of truck watch carefully at tire for small up and down .. each side.
or place a piece of plywood between driveway and tire.. make sure you have 1/8 inch space.. if tire makes contact or 1/8 inch increases .. there is the problem.
you have a Short Bed.. you may NOT have a carrier bearing... I am not sure.
Thread Starter
|
Posting Guru
Joined: Aug 2012
Posts: 1,144
Likes: 1
From: ALPHA ,NJ
for wheel/tire/axle.. lift rear end (both sides) start engine and put into gear.. SLOW..
from rear of truck watch carefully at tire for small up and down .. each side.
or place a piece of plywood between driveway and tire.. make sure you have 1/8 inch space.. if tire makes contact or 1/8 inch increases .. there is the problem.
you have a Short Bed.. you may NOT have a carrier bearing... I am not sure.
from rear of truck watch carefully at tire for small up and down .. each side.
or place a piece of plywood between driveway and tire.. make sure you have 1/8 inch space.. if tire makes contact or 1/8 inch increases .. there is the problem.
you have a Short Bed.. you may NOT have a carrier bearing... I am not sure.
Mountain Pass
Joined: Dec 2010
Posts: 214
Likes: 0
It's just a tire. As to the diagnosis, keep in mind the rear end will not shake if you have it on jacks (jacks aren't very springy.) That is not going to work.
It might work to have somebody drive behind you and watch (maybe).
It might work to have somebody drive behind you and watch (maybe).
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Postmaster
Joined: Jul 2015
Posts: 4,392
Likes: 22
From: very South Texas
I GUESS you missed the part of the plywood and tire spacing... this is common in the repair shops. when you do not have a 50K frame jig...
out of round tire, wheel, bent axle.. the rear end is NOT to move .. as its on Jacks. the rear end is bouncing because of SOMETHING making it do it...
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