driveline vibration can anyone help?

[ringrib]

i have a 98 explorer uk spek
when driving it seems to give a driveline vibration we have had it on a ramp to investigate driveshaft seems fine,the propshaft uj seemed a bit notchy but not enough to give concern
can anyone help?

 

[agallant]

I had the U-Joints go in my Tahoe it did the same thing. When inspecting the driveshapf i could not see any thing wrong with the u-joints ither but when i replaced them the broblem was solved. I also got metter MPG i guess that would be KPL for you

-AG

 

[Creager]

yeah the U-Joints will definatlly cause a problem like that. Also, check to see if any weights that might have been on the driveshaft to balance it, fell off.