AC/Heater Blower
 

I have a 92 SL500 that looks and runs great. The only concern I have is with the AC blower. It doesn't have a lot of force behind it, even on the high speed. The dampers are all opening and it does not seem to have anything blocking the air flow. Is this normal for this vehicle or is it possible the motor is just "tired"? Any advice would be appreciated.

It may be that your evaporator temperature sensor has failed. Have a look at these threads to check your symptoms:

http://www.peachparts.com/shopforum/showthread.php?t=120267&highlight=evaporator+temperature+sensor

http://www.peachparts.com/shopforum/showthread.php?t=84047&highlight=evaporator+temperature+sensor