Vibration in floor at 60MPH Mystery

Hey All,

I'm new to Tacoma World — So thanks for taking a look at my problem

Here's my rig:
2001 Tacoma 4x4 TRD xtra cab, Manual, 128k
New tires, belts, clutch, center support bearing, shocks and struts, fluids, and line-x. Pretty much stock.

Here's the problem, I'm getting vibration in the floor when accelerating from 60 to 75ish. It only happens when I hit the gas. All the u-joints look ok and wheels are balanced, and engine mounts look good.

thanks for your help!

 

might need your driveshaft balanced if you're sure the tires were properly balanced by a reputable tire shop.

did you grease all the u-joint zerks? they may look and feel ok, but could be a bit low on grease.

 

any lift on the truck?

your mentioning "new tires" leads me to believe tire balance. have them roadforce balanced and it will probably solve it.

 

Thanks for the replies!

No lift on the truck.
The u-joints are greased, but the don't have zerks.
I'll give the road force balancing a shot!

 

If the driveshaft was re-assembled out of phase, it will vibrate as well.