hey guys my driver and passenger front windows go up real slow sometimes pull them up with my hands for assistance. somebody said that the window motors were weak. Is there a certain voltage they should be putting out. wanted to get you guys input before I waste time pulling them out
James, Slow windows can be a combination of things including weak motors, dried grease in motor gear, dried grease in the channels, or broken rollers/glides on the windows/regulators. The original grease often dries up as seen on the rear qtr window sash cam channels seen below from my 1964 Coupe de Ville. This makes it much harder for the motor to put the window/regulator rollers/glides through the channel. Motors also become weak and worn out over time. Motors are operated with 12 volts (they do not put out voltage), and should be turn strong in either direction. You an remove the motor and remove the gear and clean the cavity and regrease. Wheel bearing grease or white lithium grease are good. Once cleaned and regreased you can bench test. With no load on the bench the motor should turn very slow.
If you need a window motor I have motors and gears, cleaned, greased and tested for $45. (with the exception of the rear qtr convertible gear which is different from the other gear used). If you end up needing a motor shoot me an email to email@example.com.
As an example of the old dried grease, below are the sash cam channel and rear guide with the old caked in grease and a picture below of the channels cleaned and coated with white lithium grease:
Excellent price for a window motor.