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post #1 of (permalink) Old 05-06-2003, 09:14 PM Thread Starter
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Bad Vibrations

Turned over 180k on CASPER over the week end. She always had a lil vibration in the tranfer case shifter but now its goten very bad. It only does it on a very hard pull like pulling out on a hill. Once I get into 2nd gear near 20mph the shifter vibrates so hard I can't even keep my hand on it even the temp gauge is bouncing all over the place. It is very bad between 20 to 30 mph in 2nd and then it seems to leave as I get up to speed and shift gears. If I pull out going down hill its not even noticeable. Any one have any sugestions??
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post #2 of (permalink) Old 05-06-2003, 09:27 PM
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Re: Bad Vibrations

Have you ever changed the u-joints? If not, @ 180K I would suspect that they are shot.

Even if there doesn't seem to be a lot of play in the joints, I would pull both shafts to see how the joints feel.
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post #3 of (permalink) Old 05-06-2003, 10:05 PM
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Re: Bad Vibrations

lol, sounds like you have a bad driver side motor mount. this had happened to a friend's samurai and it would do about the same thing. once it got up to speed the vibration seemed to disappear, but at low speeds and high powere it would shake like there's no tomorrow. sounds like a possible candidate for a dodge motor mount project. grab hold of the front of the engine and lift up. if a motor mount is bad it will rear its ugly head quickly.
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post #4 of (permalink) Old 05-06-2003, 11:24 PM
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Re: Bad Vibrations

Check the rear trans/engine mount and tcase mounts as well , something is moving under a torque load ....
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post #5 of (permalink) Old 05-07-2003, 01:10 PM
 
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Re: Bad Vibrations

A friend suzuki just started doing the same thing this week. We changed the u joints on the short shaft and rear drive shaft, no change [img]images/graemlins/confused.gif[/img]
His transfer case mounts are not torn and look good.Let me know if you are able to eliminate your vibration.
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post #6 of (permalink) Old 05-07-2003, 03:53 PM
 
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Re: Bad Vibrations

Doable, make sure the xfer mounting brackets aren't bent.
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post #7 of (permalink) Old 05-07-2003, 05:08 PM
 
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Re: Bad Vibrations

outlawmws, Thanks as a mater of fact the short arm was bent so we installed a set of spidertrax HD arms(long and short) when we changed the u joints .

But still have the vibes when accelerating in 2nd gear. Not as noticeable in the other gears.
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post #8 of (permalink) Old 05-07-2003, 08:07 PM
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Re: Bad Vibrations

your motor mount is bad.
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post #9 of (permalink) Old 05-07-2003, 09:33 PM Thread Starter
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Re: Bad Vibrations

Going to check it all this week end and let ya know what I find out
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post #10 of (permalink) Old 05-25-2003, 10:11 AM Thread Starter
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Re: Bad Vibrations

Sorry it took me a while to check this out but I drove CASPER every day. You guys were right as usual the back universal joint was bad. It was so bad the drive shaft bearing loops were rubbing on each other. I had to use cuttin tourch to get old universal out as it was frozen in there. I installed the new universal joint and bingo no vibration. Last time I had any problems with CASPER I was thinking about getting rid of her but took some advice from this board and repaired her with very lil cost. Tanx again for all your help. [img]images/graemlins/grin.gif[/img]
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