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  #1  
Old 12-07-2010, 01:44 PM
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The Hop

I know its been talked about. Ive been looking around on google and on here for an answer with no luck.


My problem is a rear end hop / bounce / shimmy.

This problem occurs if my foot is on the brake or not

When accelerating i get little to no vibrations maybe a tiny bit of vibration from 40-50 right before it shifts into overdrive.

When decelerating the truck will do good until the truck comes out of overdrive then it will start alittle bounce until like 30 mph or so...

The steering wheel doesnt shake and the brake pedal does not shimmy.

I replaced front rotors about 8,000 miles ago.. Carrier Bearing checked around 8,000 miles ago, along with u-joints. My front one (transfer case side) will probably need to be changed in 10,000 or so.It is not loose but not tight as the rest of them are

No Bent rims. Tires have been balanced within the last 5,000 miles and this problem has lasted longer than the tires have.

Maybe last 20,000 and ive had these tires for 10,000

Lug nuts are tight, Rear Differential Fluid was just services (fluid looked OK. But did have alittle bit of metal in there)

The truck will do it Empty and loaded.
But not all the time when loaded just sometimes, But when it does do it. It will shake ya around pretty good.


What in the h3ll is it!!!!!!!!
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  #2  
Old 12-07-2010, 04:50 PM
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Old 12-07-2010, 05:05 PM
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mine does the same thing a little bit. I think it mightbe the rear rotors
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Old 12-12-2010, 03:10 PM
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Any other ideas
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Old 12-12-2010, 08:40 PM
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I have zero diesel background, but will throw this out there...

When was the last time the bushings in the rear were replaced? Meaning suspension connecting points?
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Old 12-13-2010, 06:30 AM
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Wheel berrings? I was checking mine last night, and left rear was not near tight enough... as I was doing brakes anyway, I pulled the axle shaft, and spun the hub(s), left was much loser than the right, and had metal shavings... due for a new berring. Right was nice and smooth, and didn't need the lock ring tighened much... a click or two, the left I got almost half a turn out of it... and it feels ROUGH when you turn it... I have been having random shakes as you discribe... this might be it.
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Old 12-14-2010, 03:19 PM
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I guess Ill be ripping the rear apart this weekend
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Old 12-15-2010, 08:42 AM
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Check your shocks maybe? If those are shot you can see a lot of hop in the rear. just my
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Old 12-15-2010, 12:45 PM
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Hard to diagnose a problem like this without being there. I would get it on a rack and have someone in it get it up to speed while you are looking down under. Hope it is cheap and obvious.
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