wrote in message
...
It can be shot with no appreciable looseness. The joint can be tight
instead of loose and still cause a shake. Generally these squeak, or
"chirp"

Can you generally tell by unbolting the flange and wiggling the
u-joint by hand?

The few I've worked on were pretty obviously bad once freed from the
tranny or differential. The OEM ones were "lubed for life", so their
life ended when the lube ran out.

I've heard that sticky driveshaft slip joint splines can cause strange
symptoms.

jsw