While out at lunch I performed a diangostic test on the climate control system using the climate control - control unit. When I accessed the blower voltage it showed a steady 3.9v at low while at maximum it showed 14v.

That means it appears the motor is getting the proper voltage but simply not running. I'm now leaning towards it being the motor itself.

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1997 S-320 (188,000)
1993 300SD (167,000)
1979 300SD (Odometer Stopped at about 220K)
1998 E-300 Tubro Diesel**(Owned)
1987 300E**(Owned)