:mad: replaced condenser fan motor that overheated and new motor overheats and thermally shuts down. Also replaced capacitor. The motor is properly grounded and spins in the correct direction. It seems like there still is a voltage problem. Any ideas?

Is it wired properly? Can you tell me how you wired it?

Check the amperage rating on the motor and then check the amps that the motor is drawing as it is running, if the draw is more than the rating you need a higher rated motor or a fan with a different number of blades or a different pitch to the blades.

Did you replace the old motor with the same voltage and amps as the old one?