Ok, I've listened a few times and what I am hearing is an electrical roundy round bit not wanting to go roundy round.
Since the engine is not running, it's not an accessory driven by the engine. (IP, A/C, VP, PS or idler pulley). Toward the end of the video, you can hear the fuel pump hit it's pressure cut off and stop. The noise is still there, and you can hear the noise change from the "walrus bark" to a more rhythmic hamster wheel squeak and start to speed up. I think the bearings is the HVAC blower are failing. We had a similar sound on an 85 E-150 when the seasons would change and the motor would squall until it quit. I'd say a new blower motor should fix it for many more years. The van would fail fast since it pulls the air across the motor instead of being separate like the trucks.
Since the engine is not running, it's not an accessory driven by the engine. (IP, A/C, VP, PS or idler pulley). Toward the end of the video, you can hear the fuel pump hit it's pressure cut off and stop. The noise is still there, and you can hear the noise change from the "walrus bark" to a more rhythmic hamster wheel squeak and start to speed up. I think the bearings is the HVAC blower are failing. We had a similar sound on an 85 E-150 when the seasons would change and the motor would squall until it quit. I'd say a new blower motor should fix it for many more years. The van would fail fast since it pulls the air across the motor instead of being separate like the trucks.
