It was the vibration damper that had come adrift on the hub so it would spin right around. because that pulley was sandwiched between two others (it's an a/c, p/s car) it didn't spit itself off. A new vibe damper cured it...also got to find out about a pretty cool mopar only wrecking yard in Sandy, about 20 miles away.
wildcatmopars.com
good folks, and they schooled me on, and sold me, the proper long dipstick and dipstick for an a/c model...

Glad to see you got this fixed.
Yep, Wildcat is a good place to know about if you own an old Mopar.
DD