Mysterious Driveline Vibration
 

I'm stumped. A while back my '02 TJ decided to start getting a pretty bad
vibration from about 65 miles per hour on up. It doesn't matter what gear I
am in or which set of tires I have on, its always related to road speed. If
I remove the rear driveshaft and drive in 4-hi, the vibration disappears.
That suggests to me a problem with the driveshaft, yet all the ujoints and
the centering ball are fine, no balance weights are missing, and there's no
sign of any sort of damage. The pinion yoke and transfer case output seem
fine as well, no discernable untoward movements there.

What am I missing here? What could possibly be the source of this vibration?

/Peter
'02 TJ with AA SYE and Tom Woods drive shaft (among other things).

Re: Mysterious Driveline Vibration
 

Hi Peter,
Did you move the pinion angle up to point directly at the transfer
yoke: http://www.4xshaft.com/driveline101.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Peter Pontbriand wrote:
>
> I'm stumped. A while back my '02 TJ decided to start getting a pretty bad
> vibration from about 65 miles per hour on up. It doesn't matter what gear I
> am in or which set of tires I have on, its always related to road speed. If
> I remove the rear driveshaft and drive in 4-hi, the vibration disappears.
> That suggests to me a problem with the driveshaft, yet all the ujoints and
> the centering ball are fine, no balance weights are missing, and there's no
> sign of any sort of damage. The pinion yoke and transfer case output seem
> fine as well, no discernable untoward movements there.
>
> What am I missing here? What could possibly be the source of this vibration?
>
> /Peter
> '02 TJ with AA SYE and Tom Woods drive shaft (among other things).

Re: Mysterious Driveline Vibration
 

Hi Peter,
Did you move the pinion angle up to point directly at the transfer
yoke: http://www.4xshaft.com/driveline101.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Peter Pontbriand wrote:
>
> I'm stumped. A while back my '02 TJ decided to start getting a pretty bad
> vibration from about 65 miles per hour on up. It doesn't matter what gear I
> am in or which set of tires I have on, its always related to road speed. If
> I remove the rear driveshaft and drive in 4-hi, the vibration disappears.
> That suggests to me a problem with the driveshaft, yet all the ujoints and
> the centering ball are fine, no balance weights are missing, and there's no
> sign of any sort of damage. The pinion yoke and transfer case output seem
> fine as well, no discernable untoward movements there.
>
> What am I missing here? What could possibly be the source of this vibration?
>
> /Peter
> '02 TJ with AA SYE and Tom Woods drive shaft (among other things).

Re: Mysterious Driveline Vibration
 

Hi Peter,
Did you move the pinion angle up to point directly at the transfer
yoke: http://www.4xshaft.com/driveline101.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Peter Pontbriand wrote:
>
> I'm stumped. A while back my '02 TJ decided to start getting a pretty bad
> vibration from about 65 miles per hour on up. It doesn't matter what gear I
> am in or which set of tires I have on, its always related to road speed. If
> I remove the rear driveshaft and drive in 4-hi, the vibration disappears.
> That suggests to me a problem with the driveshaft, yet all the ujoints and
> the centering ball are fine, no balance weights are missing, and there's no
> sign of any sort of damage. The pinion yoke and transfer case output seem
> fine as well, no discernable untoward movements there.
>
> What am I missing here? What could possibly be the source of this vibration?
>
> /Peter
> '02 TJ with AA SYE and Tom Woods drive shaft (among other things).

Re: Mysterious Driveline Vibration
 

You bet. Actually, the pinion is 1 degree lower than the shaft to cover
flexing of the rubber suspension link bushings while under cruising load.
Maybe it should be more than 1 degree?

/Peter

----- Original Message -----
From: "L.W. (ßill) ------ III" <----------@cox.net>
Newsgroups: rec.autos.makers.jeep+willys
Sent: Wednesday, September 08, 2004 10:39 PM
Subject: Re: Mysterious Driveline Vibration


> Hi Peter,
> Did you move the pinion angle up to point directly at the transfer
> yoke: http://www.4xshaft.com/driveline101.html
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Peter Pontbriand wrote:
> >
> > I'm stumped. A while back my '02 TJ decided to start getting a pretty
bad
> > vibration from about 65 miles per hour on up. It doesn't matter what
gear I
> > am in or which set of tires I have on, its always related to road speed.
If
> > I remove the rear driveshaft and drive in 4-hi, the vibration
disappears.
> > That suggests to me a problem with the driveshaft, yet all the ujoints
and
> > the centering ball are fine, no balance weights are missing, and there's
no
> > sign of any sort of damage. The pinion yoke and transfer case output
seem
> > fine as well, no discernable untoward movements there.
> >
> > What am I missing here? What could possibly be the source of this
vibration?
> >
> > /Peter
> > '02 TJ with AA SYE and Tom Woods drive shaft (among other things).

Re: Mysterious Driveline Vibration
 

You bet. Actually, the pinion is 1 degree lower than the shaft to cover
flexing of the rubber suspension link bushings while under cruising load.
Maybe it should be more than 1 degree?

/Peter

----- Original Message -----
From: "L.W. (ßill) ------ III" <----------@cox.net>
Newsgroups: rec.autos.makers.jeep+willys
Sent: Wednesday, September 08, 2004 10:39 PM
Subject: Re: Mysterious Driveline Vibration


> Hi Peter,
> Did you move the pinion angle up to point directly at the transfer
> yoke: http://www.4xshaft.com/driveline101.html
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Peter Pontbriand wrote:
> >
> > I'm stumped. A while back my '02 TJ decided to start getting a pretty
bad
> > vibration from about 65 miles per hour on up. It doesn't matter what
gear I
> > am in or which set of tires I have on, its always related to road speed.
If
> > I remove the rear driveshaft and drive in 4-hi, the vibration
disappears.
> > That suggests to me a problem with the driveshaft, yet all the ujoints
and
> > the centering ball are fine, no balance weights are missing, and there's
no
> > sign of any sort of damage. The pinion yoke and transfer case output
seem
> > fine as well, no discernable untoward movements there.
> >
> > What am I missing here? What could possibly be the source of this
vibration?
> >
> > /Peter
> > '02 TJ with AA SYE and Tom Woods drive shaft (among other things).

Re: Mysterious Driveline Vibration
 

You bet. Actually, the pinion is 1 degree lower than the shaft to cover
flexing of the rubber suspension link bushings while under cruising load.
Maybe it should be more than 1 degree?

/Peter

----- Original Message -----
From: "L.W. (ßill) ------ III" <----------@cox.net>
Newsgroups: rec.autos.makers.jeep+willys
Sent: Wednesday, September 08, 2004 10:39 PM
Subject: Re: Mysterious Driveline Vibration


> Hi Peter,
> Did you move the pinion angle up to point directly at the transfer
> yoke: http://www.4xshaft.com/driveline101.html
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Peter Pontbriand wrote:
> >
> > I'm stumped. A while back my '02 TJ decided to start getting a pretty
bad
> > vibration from about 65 miles per hour on up. It doesn't matter what
gear I
> > am in or which set of tires I have on, its always related to road speed.
If
> > I remove the rear driveshaft and drive in 4-hi, the vibration
disappears.
> > That suggests to me a problem with the driveshaft, yet all the ujoints
and
> > the centering ball are fine, no balance weights are missing, and there's
no
> > sign of any sort of damage. The pinion yoke and transfer case output
seem
> > fine as well, no discernable untoward movements there.
> >
> > What am I missing here? What could possibly be the source of this
vibration?
> >
> > /Peter
> > '02 TJ with AA SYE and Tom Woods drive shaft (among other things).

Re: Mysterious Driveline Vibration
 

No more than one degree on a TJ. You only use more when there are leaf
springs because axle wrap is a bigger problem for them.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/
"Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
news:chph57$5h7$1@news.storm.ca...
> You bet. Actually, the pinion is 1 degree lower than the shaft to cover
> flexing of the rubber suspension link bushings while under cruising load.
> Maybe it should be more than 1 degree?
>
> /Peter
>
> ----- Original Message -----
> From: "L.W. (ßill) ------ III" <----------@cox.net>
> Newsgroups: rec.autos.makers.jeep+willys
> Sent: Wednesday, September 08, 2004 10:39 PM
> Subject: Re: Mysterious Driveline Vibration
>
>
>> Hi Peter,
>> Did you move the pinion angle up to point directly at the transfer
>> yoke: http://www.4xshaft.com/driveline101.html
>> God Bless America, ßill O|||||||O
>> mailto:-------------------- http://www.----------.com/
>>
>> Peter Pontbriand wrote:
>> >
>> > I'm stumped. A while back my '02 TJ decided to start getting a pretty
> bad
>> > vibration from about 65 miles per hour on up. It doesn't matter what
> gear I
>> > am in or which set of tires I have on, its always related to road
>> > speed.
> If
>> > I remove the rear driveshaft and drive in 4-hi, the vibration
> disappears.
>> > That suggests to me a problem with the driveshaft, yet all the ujoints
> and
>> > the centering ball are fine, no balance weights are missing, and
>> > there's
> no
>> > sign of any sort of damage. The pinion yoke and transfer case output
> seem
>> > fine as well, no discernable untoward movements there.
>> >
>> > What am I missing here? What could possibly be the source of this
> vibration?
>> >
>> > /Peter
>> > '02 TJ with AA SYE and Tom Woods drive shaft (among other things).
>
>

Re: Mysterious Driveline Vibration
 

No more than one degree on a TJ. You only use more when there are leaf
springs because axle wrap is a bigger problem for them.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/
"Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
news:chph57$5h7$1@news.storm.ca...
> You bet. Actually, the pinion is 1 degree lower than the shaft to cover
> flexing of the rubber suspension link bushings while under cruising load.
> Maybe it should be more than 1 degree?
>
> /Peter
>
> ----- Original Message -----
> From: "L.W. (ßill) ------ III" <----------@cox.net>
> Newsgroups: rec.autos.makers.jeep+willys
> Sent: Wednesday, September 08, 2004 10:39 PM
> Subject: Re: Mysterious Driveline Vibration
>
>
>> Hi Peter,
>> Did you move the pinion angle up to point directly at the transfer
>> yoke: http://www.4xshaft.com/driveline101.html
>> God Bless America, ßill O|||||||O
>> mailto:-------------------- http://www.----------.com/
>>
>> Peter Pontbriand wrote:
>> >
>> > I'm stumped. A while back my '02 TJ decided to start getting a pretty
> bad
>> > vibration from about 65 miles per hour on up. It doesn't matter what
> gear I
>> > am in or which set of tires I have on, its always related to road
>> > speed.
> If
>> > I remove the rear driveshaft and drive in 4-hi, the vibration
> disappears.
>> > That suggests to me a problem with the driveshaft, yet all the ujoints
> and
>> > the centering ball are fine, no balance weights are missing, and
>> > there's
> no
>> > sign of any sort of damage. The pinion yoke and transfer case output
> seem
>> > fine as well, no discernable untoward movements there.
>> >
>> > What am I missing here? What could possibly be the source of this
> vibration?
>> >
>> > /Peter
>> > '02 TJ with AA SYE and Tom Woods drive shaft (among other things).
>
>

Re: Mysterious Driveline Vibration
 

No more than one degree on a TJ. You only use more when there are leaf
springs because axle wrap is a bigger problem for them.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/
"Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
news:chph57$5h7$1@news.storm.ca...
> You bet. Actually, the pinion is 1 degree lower than the shaft to cover
> flexing of the rubber suspension link bushings while under cruising load.
> Maybe it should be more than 1 degree?
>
> /Peter
>
> ----- Original Message -----
> From: "L.W. (ßill) ------ III" <----------@cox.net>
> Newsgroups: rec.autos.makers.jeep+willys
> Sent: Wednesday, September 08, 2004 10:39 PM
> Subject: Re: Mysterious Driveline Vibration
>
>
>> Hi Peter,
>> Did you move the pinion angle up to point directly at the transfer
>> yoke: http://www.4xshaft.com/driveline101.html
>> God Bless America, ßill O|||||||O
>> mailto:-------------------- http://www.----------.com/
>>
>> Peter Pontbriand wrote:
>> >
>> > I'm stumped. A while back my '02 TJ decided to start getting a pretty
> bad
>> > vibration from about 65 miles per hour on up. It doesn't matter what
> gear I
>> > am in or which set of tires I have on, its always related to road
>> > speed.
> If
>> > I remove the rear driveshaft and drive in 4-hi, the vibration
> disappears.
>> > That suggests to me a problem with the driveshaft, yet all the ujoints
> and
>> > the centering ball are fine, no balance weights are missing, and
>> > there's
> no
>> > sign of any sort of damage. The pinion yoke and transfer case output
> seem
>> > fine as well, no discernable untoward movements there.
>> >
>> > What am I missing here? What could possibly be the source of this
> vibration?
>> >
>> > /Peter
>> > '02 TJ with AA SYE and Tom Woods drive shaft (among other things).
>
>