65+ mph vibrations

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May 9, 2011 | 10:45 AM

#16

Jor2010dan

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Joined: Oct 2009

Posts: 532

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From: Southern Utah

Year: 1992

Model: Cherokee

Engine: 4.0 I6

Quote:

Originally Posted by gvns8

I was more referring to the pinion angle possibly being too low in the front causing ujoint vibes. This would occur when having a correct castor alignment according to factory specs.

Stupid question, but In 2wd does it still spin??
Haha I've never been able to check

May 9, 2011 | 10:47 AM

#17

Jor2010dan

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Joined: Oct 2009

Posts: 532

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From: Southern Utah

Year: 1992

Model: Cherokee

Engine: 4.0 I6

Quote:

Originally Posted by mrfajita

Not sure how hard the rear ones are, but the fronts are easy assuming everything isn't rusted. Easier than changing an axle shaft u-joint, since its the same process.
Drive the speed the vibes start at, and take curves in both directions (mountain highways) Mine would get worse turning towards the left and go away turning right, so I replaced the hub assembly on the left side. Its gone now.

Hmm. Well turning doesn't effect mine. Mine starts at 65 and progressively gets worse.

May 9, 2011 | 11:25 AM

#18

JCKustoms

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Joined: Jun 2010

Posts: 890

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From: ............

Year: 2000

Model: Cherokee

Engine: 4.0

Sounds like to me that either the front or rear driveshaft has a worn out u-joint, or slip joint!

May 9, 2011 | 11:48 AM

#19

Jor2010dan

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Joined: Oct 2009

Posts: 532

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From: Southern Utah

Year: 1992

Model: Cherokee

Engine: 4.0 I6

Quote:

Originally Posted by JCKustoms

Sounds like to me that either the front or rear driveshaft has a worn out u-joint, or slip joint!

K ill say it again. Does the front spin on the freeway in 2wd?
I know that I could use a new u joint in the front. When i was taking apart my rear D/S when i put my new H&T and DC D/S in the rear, I kept the u joint caps. My front driveshaft had a cap go missing when I took it off, so I used a cap off my rear. I can see that while spinning fast how that could vibrate! but does it even spin that fast while driving? I thought the front axle is disengaged and the driveshaft is disengaged at the T-case in 2wd

May 9, 2011 | 12:00 PM

#20

JCKustoms

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Joined: Jun 2010

Posts: 890

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From: ............

Year: 2000

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by Jor2010dan

Your front DS does turn while in 2wd, just as fast as the wheels are turning.

May 9, 2011 | 12:11 PM

#21

Jor2010dan

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Senior Member

Joined: Oct 2009

Posts: 532

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From: Southern Utah

Year: 1992

Model: Cherokee

Engine: 4.0 I6

Quote:

Originally Posted by JCKustoms

Your front DS does turn while in 2wd, just as fast as the wheels are turning.

hmm, well maybe it needs a new axle side u joint and a good rebalance.
Thanks for the ideas. Hopefully that's it.

May 9, 2011 | 03:20 PM

#22

HCCAFan

CF Veteran

Joined: Nov 2010

Posts: 1,275

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From: North Carolina

Year: 1999

Model: Cherokee

Engine: Gas

Did I already say Double Cardan?

May 9, 2011 | 03:38 PM

#23

freegdr

CF Veteran

Joined: Mar 2010

Posts: 47,923

Likes: 38

From: Broward County Fl.

Year: 1989 xj sport 2dr

Model: Cherokee

Engine: 12 hole bosch Injectors

i see nobody asked this yet did it vibe b4 the locker install

May 9, 2011 | 04:36 PM

#24

Jor2010dan

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Senior Member

Joined: Oct 2009

Posts: 532

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From: Southern Utah

Year: 1992

Model: Cherokee

Engine: 4.0 I6

Quote:

Originally Posted by freegdr

i see nobody asked this yet did it vibe b4 the locker install

Honestly I dunno. I don't get on the freeways much. I will this summer, but since my lift and locker upgrade there hasn't been any high way miles. In my understanding, I don't know how it would vibrate, but I guess the locker could be the culprit, but I don't think so