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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Apr 2008 Posts: 27 Apprentice | | Apprentice Joined: Apr 2008 Posts: 27 | I bought a complete heater out of a 1961 chevy truck. I took it apart and tried to turn the cage fan. It was really tight so I cleaned everything up and bench tested the motor with a car battery at 12.5 amps. The motor is rated at 13. It spins but to me it seems slow. The dash switch has two positions and I only get rotation on high. I noticed the resistor heated when the switch was on low but no motor rotation. Is that what the resistor is supposed to do? Is the motor bad? Or is the switch bad? Can I repair the motor?
Is there any other advice.
Thanks in advance
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