Well its a DC motor so it has brushes and a commutator. The brushes wear into the commutators. Also the springs weaken.
Im guessing its the blower motor.
I fired it up and put some resistance on the squirrel cage and she had some power... So it must be when it heats up...
But Im not 100% positive and i dont feel like tossing $40 out the window if thats not the root cause. So looking for confirmation or other guess's/ideas.
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-Ryan
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