I have a 1984 z31. I have recently been hearing a rattle in the engine and discovered that it was the crank pulleys rattling around. Well Now today the sound multiplied, I popped the hood and my radiator fan and the pulley is wobbling all over the place. I can move it with my hand when the car's off. This car is my primary transportation and I don't know what exactly is broken.

If anyone can help me out that would be really helpful.

 

did you ever get this issue resolved

 

from everything you just described it sounds like a bad water pump... dont drive it until you get it replaced.. your fan can break off slam in your radiator or even worse.. fly through the hood if your car... and ive seen both happen..