Kerry,
Can you find the brushes? Check them, they may be worn down and not making solid contact but are relatively easy to replace.
Here is the brush replacement on a 123-
http://www.peachparts.com/Wikka/W123BlowerBrush
If you find the motor/blower itself to be bad, I still have the blower from my parted 116, but seeing as how the amp from mine did not solve/fix the problem you may not want to go that route.