Vibration

[Prairiefarm]

Have a 2000 Expedition with a vibration I can't pin point. I've replaced the tires, tie-rods, ball joints had the front end aligned but I still have the vibration when I reach speeds of 50 mph or greater.

What could be causing this?

 

[toms89]

Drive shaft runout, U-joints or half shafts!?

 

[Lightnig]

Drive shaft runout, U-joints or half shafts!?

That was my first thought too. U joints, that is...

 

[mindgame]

+2 for u joints...

 

[gharris129]

That was my guess too lol. They arn't built to last you can pull the whole drive shaft if you want. If it run smooth there was your problem. Universals. I don't know of any reason you can't run it in rear wheel drive till you get the part. Really easy DIY.