- Joined
- Jan 13, 2019
- Messages
- 1,378
- Reaction score
- 806
- Points
- 113
- Location
- Pennsylvania
- Vehicle Year
- 2004
- Make / Model
- Ford
- Engine Type
- 3.0 V6
- Engine Size
- 3.0
- Transmission
- Automatic
- 2WD / 4WD
- 2WD
- My credo
- My world is filled with stuff that needs to be fixed
To demagnetize the permanent magnets in those motors to the point where you would notice the change would require a massive demagnetizing field or raising the temperature past the Curie temperature, and if either of those things happened the motors would be the least of your worries. Given how unlikely it is to have that happen on two motors (on the same vehicle?), more than likely it was a misdiagnoses and the real problem got corrected while the parts were being replaced.20 some yrs ago I had an electric radiator fan and a heater blower fan motor lose their magnetics. (GM Pontiacs) Really surprised me too.
https://sciencing.com/demagnetize-magnet-5071154.html