Bent axle?

[RENO88]

So I'm having vibrations at various speeds. I rebalanced my tires (33" BFG's) And I have no lift, so its not pinion angle.
When it does vibrate, I can either let off throttle, or quickley accelerate and it'll go away. My other thought would be a bent rim, but it does'nt vibrate at a certain speed. What are your thoughts? Yes I did a search BTW.

 

[RENO88]

Also, I did replace the U-joints all around. Drive shaft balance weights are still there.

 

[RENO88]

Ok, what are the signs, driving signals of a bent axle?

 

[dyeager535]

Your axle would be in pieces already.

Seriously, that's about the last thing I'd consider. Can't be much help beyond that, I know there is a section in the service manual (at home) that lists common vibration sources. I can get to it when I get home. I thought a few more would post stuff up though.

Is this a slip yoke driveshaft? If two piece, are the yokes in phase?

 

[dhcomp]

Your shaft could easily be out of balance. I'd go get it balanced, or see if an driveline shop can help you out.

 

[fortcollinsram]

I vote driveline issue... Even if your u-joints are new, you still need to check for excessive play in any of the yokes. Also a loose pinion will do what you say. Typically, something that is bent or out of balance will vibrate all the time and not just from load to coast.

 

[broncoman6524]

Typically, something that is bent or out of balance will vibrate all the time and not just from load to coast.

Bingo. I balance tires all day long, and bent object (wheel etc.) will tend to get worse with speed.

Check you slip yoke in the case, see if there is any play.

 

[RENO88]

I'll have to check my yoke later. That sounds like a pricey fix. Yes? Also, would the balancer detect a bent rim?

 

[ORYGUNHAMMER]

i vote driveshaft

i've had some weird,odd vibrations on various vehicles and the driveshaft is where i'd look, other places are(and i doubt it) the crossmember and the trans mount=check those for side to side mis-aligment/looseness,get a floor jack and a buddy and jack the ass up and have yer buddy get in/put it in gear=you'll see a bent drivshaft or wadded u-joint bearing

 

[RENO88]

I'll give that a try too. Thanx for the replies.

 

[obijuan]

check your motor mounts, they can slightly adjust joint angles. also cheap parts store joints arent as good as say spicer.