'99 Burb Vibration - I'm stumped!!!
10-24-2006, 11:31 AM
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Re: '99 Burb Vibration - I'm stumped!!!
Originally Posted by Rippem
touche' 
though how much would cause a vibe (only at higher speeds) and how much would show in tire wear? especially rears? I think there is a thin line there.
though how much would cause a vibe (only at higher speeds) and how much would show in tire wear? especially rears? I think there is a thin line there.
10-24-2006, 11:34 AM
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Re: '99 Burb Vibration - I'm stumped!!!
Originally Posted by Rippem
BTW like my new avatar? 
Actually, I don't know whats more embarrassing, Axa having to view himself in that get-up,,,,,,,,,, or you having a picture of another guy as your avatar.
10-24-2006, 12:13 PM
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Re: '99 Burb Vibration - I'm stumped!!!
I have a bud going through the very same thing right now. I say t/c or xfer case , did the u joints . New tires . I'll see and report as we get there.
10-24-2006, 02:20 PM
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Re: '99 Burb Vibration - I'm stumped!!!
Originally Posted by hunster
I have a bud going through the very same thing right now. I say t/c or xfer case , did the u joints . New tires . I'll see and report as we get there.
10-24-2006, 02:22 PM
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Re: '99 Burb Vibration - I'm stumped!!!
Originally Posted by Rippem
homophobe 
Ok Randolph, we're devolving my serious vibration thread into another "Boathouse Ballbust".
I declaire a cease fire, right now.
Last edited by ThirdBird; 10-24-2006 at 02:25 PM.
10-24-2006, 03:46 PM
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Re: '99 Burb Vibration - I'm stumped!!!
OK but I still say any thing driveline out of whack enough to cause the vibe would've destructed itself in 75,000 miles
maybe it will tomorrow and you'll have your answer.
maybe it will tomorrow and you'll have your answer.
10-24-2006, 04:41 PM
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Re: '99 Burb Vibration - I'm stumped!!!
My 93 and my 99 both did the same thing
took me a year, 2 sets of tires and wheels, 4 tire balance shops, 1 set of drums, 2 axles, posi unit, just to figure it out on the 93, then found the cure by coincidence one day, with a real sharp friend of mine helping me do it myself...
fixed the 99 in 1 hour doing the same thing
it's the rear brake drums
the drums have to be balanced ON THE TRUCK using a strobe balancer, and using a drill with 5/16" drill bit, you drill multiple small holes 5/16 deep on the inside drum lip on the heavy side of the imbalance plane to zero balance the rotating ASSEMBLY, with the tires off, and ALL of the lug nuts in place, use the engine to get to the highest vibration point, and mark the strobe at that point. Have jackstands under the rear axle tubes to support the actual chassis weight under load
that'll fix it.
if it doesn't, it's the limited slip posi carrier out of balance, and there were a TON of them that were this way.. if your truck has the C6P option, it's one of those two scenarios, non C6P rear ends didn't do it.
Jim
took me a year, 2 sets of tires and wheels, 4 tire balance shops, 1 set of drums, 2 axles, posi unit, just to figure it out on the 93, then found the cure by coincidence one day, with a real sharp friend of mine helping me do it myself...
fixed the 99 in 1 hour doing the same thing
it's the rear brake drums
the drums have to be balanced ON THE TRUCK using a strobe balancer, and using a drill with 5/16" drill bit, you drill multiple small holes 5/16 deep on the inside drum lip on the heavy side of the imbalance plane to zero balance the rotating ASSEMBLY, with the tires off, and ALL of the lug nuts in place, use the engine to get to the highest vibration point, and mark the strobe at that point. Have jackstands under the rear axle tubes to support the actual chassis weight under load
that'll fix it.
if it doesn't, it's the limited slip posi carrier out of balance, and there were a TON of them that were this way.. if your truck has the C6P option, it's one of those two scenarios, non C6P rear ends didn't do it.
Jim
Last edited by BUIZILLA; 10-24-2006 at 04:43 PM.
10-24-2006, 07:29 PM
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Re: '99 Burb Vibration - I'm stumped!!!
Originally Posted by BUIZILLA
My 93 and my 99 both did the same thing
took me a year, 2 sets of tires and wheels, 4 tire balance shops, 1 set of drums, 2 axles, posi unit, just to figure it out on the 93, then found the cure by coincidence one day, with a real sharp friend of mine helping me do it myself...
fixed the 99 in 1 hour doing the same thing
it's the rear brake drums
the drums have to be balanced ON THE TRUCK using a strobe balancer, and using a drill with 5/16" drill bit, you drill multiple small holes 5/16 deep on the inside drum lip on the heavy side of the imbalance plane to zero balance the rotating ASSEMBLY, with the tires off, and ALL of the lug nuts in place, use the engine to get to the highest vibration point, and mark the strobe at that point. Have jackstands under the rear axle tubes to support the actual chassis weight under load
that'll fix it.
if it doesn't, it's the limited slip posi carrier out of balance, and there were a TON of them that were this way.. if your truck has the C6P option, it's one of those two scenarios, non C6P rear ends didn't do it.
Jim
took me a year, 2 sets of tires and wheels, 4 tire balance shops, 1 set of drums, 2 axles, posi unit, just to figure it out on the 93, then found the cure by coincidence one day, with a real sharp friend of mine helping me do it myself...
fixed the 99 in 1 hour doing the same thing
it's the rear brake drums
the drums have to be balanced ON THE TRUCK using a strobe balancer, and using a drill with 5/16" drill bit, you drill multiple small holes 5/16 deep on the inside drum lip on the heavy side of the imbalance plane to zero balance the rotating ASSEMBLY, with the tires off, and ALL of the lug nuts in place, use the engine to get to the highest vibration point, and mark the strobe at that point. Have jackstands under the rear axle tubes to support the actual chassis weight under load
that'll fix it.
if it doesn't, it's the limited slip posi carrier out of balance, and there were a TON of them that were this way.. if your truck has the C6P option, it's one of those two scenarios, non C6P rear ends didn't do it.
Jim
How do I know if I have a C6P rear end? It is a posi unit. I'd be inclined to think it's the rear end since I did replace the drums and it made zero difference, same vibration, same speeds, same magnitude. I would think different drums would change the vibration if they were the cause. Agree?
Thanks for the input Jim.
Last edited by ThirdBird; 10-24-2006 at 07:33 PM.
