Vibration at High Speed

Mykol · **Posted:** Sat Apr 19, 2008 10:50 pm

The other day I went to pass a couple of slower vehicles and at around 85 or so, I felt minor vibration. Any ideas?? Thanks

Sir Sam · **Posted:** Sat Apr 19, 2008 10:57 pm

Mykol wrote:

The other day I went to pass a couple of slower vehicles and at around 85 or so, I felt minor vibration. Any ideas?? Thanks

How long since you had your tires rotated and balanced?

litton · **Posted:** Sun Apr 20, 2008 9:18 am

Also tire related....Do you still have the OEM tires? In AZ, we cruise at 85 and mine did that until I put on the Coopers.

jinstall · **Posted:** Sun Apr 20, 2008 2:51 pm

Driveshaft. Mine does it at 90-98 mph very irritating.

kelticknight · **Posted:** Tue Apr 22, 2008 1:00 pm

was tires for me,changed to goodrich,havent had since
also can be balance or alignment of from tyres

Mykol · **Posted:** Tue Apr 22, 2008 11:27 pm

This vibration sure feels to be in the drivetrain. I don't feel it at all in the steering wheel. I replaced the OEM with Michelin LTX M/S about 20k miles ago. I rotate the tires every 2500 miles, but will get them balanced again soon just to rule that out. Jinstall, is your driveshaft unbalanced?? Any others with this problem?

kelticknight · **Posted:** Wed Apr 23, 2008 7:00 am

did have a problem with shaft last year where was a little vibrate and changed it so you could be right,did you check the joints

chrispitude · **Posted:** Wed Apr 23, 2008 7:01 am

Mykol wrote:

The other day I went to pass a couple of slower vehicles and at around 85 or so, I felt minor vibration. Any ideas?? Thanks

Mykol,

Go here:

http://www.gsp9700.com/

and find a Hunter GSP9700 road force machine near you. Ask specifically for a road-force balance. It's worth the money, but you may wish to call around and check the prices of road-force balancing. If you still have a vibration you will be absolutely sure it's not the tires.

I use this balance on all my vehicles, and will never go back to conventional dynamic balancing again.

- Chris

kelticknight · **Posted:** Wed Apr 23, 2008 7:03 am

hunter are good,friend owns one and swears by it

Desert_Busa · **Posted:** Wed Apr 23, 2008 10:39 am

Did you put wheel locks on? This caused a high speed vibration on mine.

kelticknight · **Posted:** Thu Apr 24, 2008 9:02 am

dont know if this helps,probly not
when i bought my kj ,it was used,got vibs at speeds over 65,turns out the person before me never drove it above that speed,so gently i increased speed over weeks and dont have no more

jinstall · **Posted:** Thu Apr 24, 2008 2:01 pm

Desert_Busa wrote:

Did you put wheel locks on? This caused a high speed vibration on mine.

I noticed this as well with the Jeep (McGuard) locks.

Mine is 100% Driveshaft. I cannot find a place here that balances driveshafts.

scrambledKJ · **Posted:** Thu Apr 24, 2008 9:12 pm

One of the higher-ups at Daystar rode in my libby the other day and asked about the driveline vibe. Its the front butterflies on the driveshaft. Was kinda embarassing...

Travis

Desert_Busa · **Posted:** Thu Apr 24, 2008 9:25 pm

jinstall wrote:

Desert_Busa wrote:

Did you put wheel locks on? This caused a high speed vibration on mine.

I noticed this as well with the Jeep (McGuard) locks.

Mine is 100% Driveshaft. I cannot find a place here that balances driveshafts.

Try taking the drive shaft off and rolling it on a smooth flat surface. A very slight bend will be noticeable. It is most likely bent and will need a new shaft. If it is true it can be balanced, but you'll need to find a shop that replaces the shaft... they'll have the tools to balance it.

There's a place around thomas and grand but I doubt that will be much help... A friend used to work at the following:
Precision Drive Lines of AZ
3225 West Osborn Road Phoenix, Arizona 85017
Phone: (602) 269-1355

jinstall · **Posted:** Fri Apr 25, 2008 3:29 pm

Thanks I will keep looking as I cannot be without the KJ for 3 weeks.

Vibration at High Speed

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