drive shaft ?

[danielcward]

I've got a vibration had u-joints replaced and wheel bearings inspected by a couple mechanics and the last mechanic told me I have a drive shaft vibration. The mechanic I had replace the u-joints said there was a little play in the slip yoke (if that's what it's called?) on the shaft.

My question is as the there are 220,000 miles on the rig and I've decided to invest in keeping it for about twice that, should I just get a new/reconditioned shaft rather than paying to have the existing one examined. As the current shaft has a little play in it my thinking is why not just get a new one?

I realize it's possible that the shaft won't cure the problem, but I'd have the piece of mind of knowing I'd upgraded things.

Also as I've made the mistake of buying a cheap hub for the front, is there a "minimum quality" threshold for a new/reconditioned shaft and does anyone have recommendations for where to get one. When I google them I see some reconditioned shafts pop up for about $350.

Any thoughts would be appreciated - Thanks - Dan

[woodnthings8]

The slip yoke can be a trouble spot but usually only with driveline noise. It can actually be lubricated by taking it apart and using a teflon lubricant.

Before I spent a bunch of money on a driveline I would try rotating the tires and seeing if the vibration goes away or changes. I have seen a couple guys that have had a tire go bad (internally) that causes vibration. Obviously your mechanics have a better idea of the vibration feel as the hopefully have driven the truck. Drivelines can also be balanced, find yourself a driveline specialty shop and have them work it over. The price is usually pretty affordable.