Persistent vibration, 87 5KQT

[Louis-Alain Richard]

To my ear, this is either the propshaft u-joint or the center bearing, or
maybe the gearbox output shaft bearing. Might as well be the rear diff input
shaft bearing. Maybe you can hear them with a stethoscope while the car is
on the lift ?

Louis-Alain


-----Message d'origine-----

This noise comes on as you build speed 
on the freeway, and is there whether you're going straight or turning.  
The volume, tone, and frequency appear to remain pretty constant.  As 
always, any and all constructive input would be sincerely appreciated!

TIA!  John