thanks for the comment. i pulled the "surround" off and discovered the main problem. the motor is strapped in a cushion clamp, and it was clamped in such a position that at least one of the squirrel cages was rubbing the plenum. the surround and all of the body molding/trim pieces are all missing lots of screws and or cracked and damaged. someone must have got into the rear air conditioner, put it together wrong and gave up. i took some photographs which I will try to upload tonight
fan sounds good on high speed now but still not running on any of the other speeds, apparently this usually means a resistor is bad ( anyone know the physical location of the resistor? is it behind the switch on the dash? )
Last edited by BahamaBlue; May 02nd 2018 1:58 pm.