My fan makes noise that sounds like bearings. At low speed it is quiet at high it is noticeable while driving
NOTE:THIS IS NOT THE OPs BLOWER MOTOR SOUND
The video follows this pattern:
switch is off then moved to low, then to high, then back to low, then off.
This is a 2 speed blower, in a heater only, 67 Dart, original motor with 324,000 miles
New video by Dana Nance
