Vibration, buzzing @ 55-60 mph??

[tamiyatim]

Okay, So I can't figure out for the life of me, what the heck is causing this noise...

At around 55-60 mph, I'm getting a buzzing/humming noise, resembling the sound of mud terrain tires... no vibration in the steering wheel, and no vibration when braking...

I'm guessing it's coming from the left front or left rear, as it is louder on the driver's side..

I've heard posts about unproperly torqued lugs, but I went around and tightened all of them... no change...

Can it be a CV joint? something with the 4 wheel drive? driveshaft? The thing that's throwing me is there is no vibration... and it's not the motor... cuz it'll do it when I throw the thing into neutral at those speeds...

Any ideas???

 

[tamiyatim]

BTW, I'm not sure if it's the new Dunlop AT20's the dealer put on, but if so, those friggin tires are AWFUL!! quiet ride??

Sounds like my old jeep CJ with BFG All Terrains on it...

 

[CJ3Flyr]

If something is wrong Dunlops are always suspect. Has the driveshaft been greased recently?

:cheers:

 

[tamiyatim]

No, and i was thinking the same... U joint noise maybe?? I'll have to get a grease gun at wally world and try it out...

thanks for the idea... I need some more brainstorming!!

 

[CJ3Flyr]

The front and rear driveshafts have fittings. I am pretty sure the 2wd model don't have any grease fittings. Good luck