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post #1 of (permalink) Old 09-21-2003, 11:30 PM Thread Starter
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rough riding yukon

I just bought a 98 Yukon, it drives nice below 70mphs but soon after that it starts to shake as if the tires r out of ballance . i had the tires ballanced twice , i replaced all four shocks, replaced the front rotors thinking they may have been warped all this and still shakes! . what the heck?
do they all drive like this ?o yeah the tires r new also...
any ideas?
Thanks

Rob
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post #2 of (permalink) Old 09-22-2003, 12:44 AM
 
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Re: rough riding yukon

How fast u wanna go? It shouldn't shake too much, but theres a lot of possible causes. Not sure exactly what, but anything from ball joints to front end bushings to .......

someone knowledgeable chime in about now.......
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post #3 of (permalink) Old 09-22-2003, 06:43 PM Thread Starter
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Re: rough riding yukon

Well,p i checked all the front end it,s all good.
Wheelbearings, balljoints ,ect.....
I did notice something, the truck sits on the bump stops, is this normal ?

Rob
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post #4 of (permalink) Old 09-22-2003, 07:04 PM
 
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Re: rough riding yukon

Droop or compression?

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post #5 of (permalink) Old 09-22-2003, 07:15 PM
 
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Re: rough riding yukon

it should not touch the bumpstops just sitting there. thats a bad thing. as for vibrations...there is only one epidemiology. it has to be soe,mthing cyclical. check everything from axleshafts to driveshafts, u-joints, bent rims, etc etc. have you checked the alignment?
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post #6 of (permalink) Old 09-22-2003, 09:18 PM Thread Starter
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Re: rough riding yukon

Yes the aliment is just done also.
And yes at rest it sits on the bump stops.
It doesnt seem to be riding low it still sits level front to back.
do ya think the torshion bars need a few crankes up ?, but then the rear will be lower than the front?
The viebration is at high speed only , above 65 mph.
Like i said before it,s like a tire is out of ballance and it seems to go away when u get to 85mph?????????????
thanks for the info


Rob
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post #7 of (permalink) Old 09-23-2003, 03:15 PM
 
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Re: rough riding yukon

which bump stops are critical, but is it possible that ur t-bars are maxed already? If its hitting the droop bump stops, that would be my guess at the problem. Is the rear of your suspension stock? Because if its not, it may have been leveled with t-bar crank somewhere in its life.....
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post #8 of (permalink) Old 09-23-2003, 09:35 PM Thread Starter
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Re: rough riding yukon

Yes the truck is all stock, 90,000 mi
When the truck sits it rest on the yellow bump stops.
I will post a pic...soon.


Rob
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post #9 of (permalink) Old 09-23-2003, 09:42 PM Thread Starter
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Re: rough riding yukon

heres a few pic,s of the bump stop
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post #10 of (permalink) Old 09-24-2003, 12:52 AM
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Re: rough riding yukon

ever though about cutting the bumpstops, shortening them a bit and then rewelding them back on?? just a though, another is i read something on mickey thompsons site, maybe giving you yukon a little tow in, they said that cures the vibrations while running there tires.
josh
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