The biggest problem is the shocks are shot. You can not tell unless
you remove them from the jeep. Also the tires are out of round enough
to get the vibration started.
I had the exact same problem.

Good luck,
Dave

 

I had this on my TJ, where balancing did not help. I rotated the tires,
front to back, and it went away. That might be a cheap short-term answer.
Also on the Sienna the wifey bent a rim just a bit that caused a shudder
over 65, put it on the back until I got a new rim and that mitigated the
effect greatly.
Tomes

"Gary B." <jeepnmon@cinci.rr.com> wrote in message
news:oSswb.24978$uw5.3413@fe2.columbus.rr.com...
> Hello.
> I have an 88 Cherokee Laredo that has a vibration from about 35 mph on
up.
> Gets worse at about 55-65 mph. The whole Jeep shakes. I've replaced the
> steering stabilizer, front U-Joints, and front lower control arm bushings
in
> an effort to solve this problem. I also had the alignment checked and the
> tires balanced. The vibration is still there. It's the type of vibration
> that seems like a classic tire balance issue, but I've already tried that
> and it was fine. Any help or suggestions would be greatly appreciated as
I
> don't know what to check next. Please feel free to share your ideas and
> thoughts on how to solve this problem. Thanks.
>
> Regards,
>
> --
> Gary B.
>
>

 

I had this on my TJ, where balancing did not help. I rotated the tires,
front to back, and it went away. That might be a cheap short-term answer.
Also on the Sienna the wifey bent a rim just a bit that caused a shudder
over 65, put it on the back until I got a new rim and that mitigated the
effect greatly.
Tomes

"Gary B." <jeepnmon@cinci.rr.com> wrote in message
news:oSswb.24978$uw5.3413@fe2.columbus.rr.com...
> Hello.
> I have an 88 Cherokee Laredo that has a vibration from about 35 mph on
up.
> Gets worse at about 55-65 mph. The whole Jeep shakes. I've replaced the
> steering stabilizer, front U-Joints, and front lower control arm bushings
in
> an effort to solve this problem. I also had the alignment checked and the
> tires balanced. The vibration is still there. It's the type of vibration
> that seems like a classic tire balance issue, but I've already tried that
> and it was fine. Any help or suggestions would be greatly appreciated as
I
> don't know what to check next. Please feel free to share your ideas and
> thoughts on how to solve this problem. Thanks.
>
> Regards,
>
> --
> Gary B.
>
>

 

I had this on my TJ, where balancing did not help. I rotated the tires,
front to back, and it went away. That might be a cheap short-term answer.
Also on the Sienna the wifey bent a rim just a bit that caused a shudder
over 65, put it on the back until I got a new rim and that mitigated the
effect greatly.
Tomes

"Gary B." <jeepnmon@cinci.rr.com> wrote in message
news:oSswb.24978$uw5.3413@fe2.columbus.rr.com...
> Hello.
> I have an 88 Cherokee Laredo that has a vibration from about 35 mph on
up.
> Gets worse at about 55-65 mph. The whole Jeep shakes. I've replaced the
> steering stabilizer, front U-Joints, and front lower control arm bushings
in
> an effort to solve this problem. I also had the alignment checked and the
> tires balanced. The vibration is still there. It's the type of vibration
> that seems like a classic tire balance issue, but I've already tried that
> and it was fine. Any help or suggestions would be greatly appreciated as
I
> don't know what to check next. Please feel free to share your ideas and
> thoughts on how to solve this problem. Thanks.
>
> Regards,
>
> --
> Gary B.
>
>

 

Do you have a narrow cupping pattern on the inside margin/surface of
your front tires???

If yes, Pull the bolts that attach the trac bar and inspect for
deformation of the attachment bolts and the frame portion of the
system. . The Right side uses a bolt whose threads will 'gall' into
the frame attachment (Original vehicles came with a totally threaded
bolt ... instead of a proper shoulder bolt/). The Left side attaches
to a secondary frame mount and the attachment can 'egg' (deform). With
both sides of the attachments deformed the play slop can 'add up'.

Do this test: key in ignition to unlock steering column, engine off,
rotate the steering wheel back and forth while looking at a far distant
object over the hood. If the far distance object is moving when you
oscilate the steering wheel ..... probably excessive slop in the trac
bar (or its attachments) - the relative soft tires will add a bit of
side to side play when you oscilate. If you perceive more than just
tire movement when you oscilate the steering wheel, have an assistant
oscilate the steering wheel while you crawl under the vehicle and
check/feel every connection of the trac bar .... *and its frame
attachments*.

Been there..... drove me nuts until I found the problem *on the frame
attachments* - galling of the bolt/frame and egg shaped hole on the
subframe attachment. Acted JUST LIKE DEATH WOBBLE!!!!!!!

Hope this helps.

;-)

In article <oSswb.24978$uw5.3413@fe2.columbus.rr.com>, Gary B.
<jeepnmon@cinci.rr.com> wrote:

> Hello.
> I have an 88 Cherokee Laredo that has a vibration from about 35 mph on up.
> Gets worse at about 55-65 mph. The whole Jeep shakes. I've replaced the
> steering stabilizer, front U-Joints, and front lower control arm bushings in
> an effort to solve this problem. I also had the alignment checked and the
> tires balanced. The vibration is still there. It's the type of vibration
> that seems like a classic tire balance issue, but I've already tried that
> and it was fine. Any help or suggestions would be greatly appreciated as I
> don't know what to check next. Please feel free to share your ideas and
> thoughts on how to solve this problem. Thanks.
>
> Regards,

 

Do you have a narrow cupping pattern on the inside margin/surface of
your front tires???

If yes, Pull the bolts that attach the trac bar and inspect for
deformation of the attachment bolts and the frame portion of the
system. . The Right side uses a bolt whose threads will 'gall' into
the frame attachment (Original vehicles came with a totally threaded
bolt ... instead of a proper shoulder bolt/). The Left side attaches
to a secondary frame mount and the attachment can 'egg' (deform). With
both sides of the attachments deformed the play slop can 'add up'.

Do this test: key in ignition to unlock steering column, engine off,
rotate the steering wheel back and forth while looking at a far distant
object over the hood. If the far distance object is moving when you
oscilate the steering wheel ..... probably excessive slop in the trac
bar (or its attachments) - the relative soft tires will add a bit of
side to side play when you oscilate. If you perceive more than just
tire movement when you oscilate the steering wheel, have an assistant
oscilate the steering wheel while you crawl under the vehicle and
check/feel every connection of the trac bar .... *and its frame
attachments*.

Been there..... drove me nuts until I found the problem *on the frame
attachments* - galling of the bolt/frame and egg shaped hole on the
subframe attachment. Acted JUST LIKE DEATH WOBBLE!!!!!!!

Hope this helps.

;-)

In article <oSswb.24978$uw5.3413@fe2.columbus.rr.com>, Gary B.
<jeepnmon@cinci.rr.com> wrote:

> Hello.
> I have an 88 Cherokee Laredo that has a vibration from about 35 mph on up.
> Gets worse at about 55-65 mph. The whole Jeep shakes. I've replaced the
> steering stabilizer, front U-Joints, and front lower control arm bushings in
> an effort to solve this problem. I also had the alignment checked and the
> tires balanced. The vibration is still there. It's the type of vibration
> that seems like a classic tire balance issue, but I've already tried that
> and it was fine. Any help or suggestions would be greatly appreciated as I
> don't know what to check next. Please feel free to share your ideas and
> thoughts on how to solve this problem. Thanks.
>
> Regards,

 

Do you have a narrow cupping pattern on the inside margin/surface of
your front tires???

If yes, Pull the bolts that attach the trac bar and inspect for
deformation of the attachment bolts and the frame portion of the
system. . The Right side uses a bolt whose threads will 'gall' into
the frame attachment (Original vehicles came with a totally threaded
bolt ... instead of a proper shoulder bolt/). The Left side attaches
to a secondary frame mount and the attachment can 'egg' (deform). With
both sides of the attachments deformed the play slop can 'add up'.

Do this test: key in ignition to unlock steering column, engine off,
rotate the steering wheel back and forth while looking at a far distant
object over the hood. If the far distance object is moving when you
oscilate the steering wheel ..... probably excessive slop in the trac
bar (or its attachments) - the relative soft tires will add a bit of
side to side play when you oscilate. If you perceive more than just
tire movement when you oscilate the steering wheel, have an assistant
oscilate the steering wheel while you crawl under the vehicle and
check/feel every connection of the trac bar .... *and its frame
attachments*.

Been there..... drove me nuts until I found the problem *on the frame
attachments* - galling of the bolt/frame and egg shaped hole on the
subframe attachment. Acted JUST LIKE DEATH WOBBLE!!!!!!!

Hope this helps.

;-)

In article <oSswb.24978$uw5.3413@fe2.columbus.rr.com>, Gary B.
<jeepnmon@cinci.rr.com> wrote:

> Hello.
> I have an 88 Cherokee Laredo that has a vibration from about 35 mph on up.
> Gets worse at about 55-65 mph. The whole Jeep shakes. I've replaced the
> steering stabilizer, front U-Joints, and front lower control arm bushings in
> an effort to solve this problem. I also had the alignment checked and the
> tires balanced. The vibration is still there. It's the type of vibration
> that seems like a classic tire balance issue, but I've already tried that
> and it was fine. Any help or suggestions would be greatly appreciated as I
> don't know what to check next. Please feel free to share your ideas and
> thoughts on how to solve this problem. Thanks.
>
> Regards,