Hi. I have a 500W variac (auto transformer) and I wish to purchase an electric motor that I can use the variac to regulate the speed of. Many electric motors won't slow down if you lower the voltage, instead they run at the same speed, sound quieter, and, when the voltage drops below a certain level, draw heaps more amps, but stop working. I have read on the internet that a 'shaded pole motor' will work on a variac, but what about a 4 pole motor? Any advice would be appreciated. Thanks
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There can be several reasons. When you say you "fixed" the windows, it makes me wonder what was wrong with them before you started. The part inside the door is usually a window regulator. It has teeth to be moved by the gear on the electric window motor. The position of the regulator teeth is suppose to match the position of the window. If you imagine setting the window 1/2 open, then that is as far as the window will rise when the electric window motor cranks. The electric motor gear will only travel so many turns for each cycle of the motor switch.
Mixing motors on the wrong side of the car is something else that can go wrong if you change W motors. The W motors are not the same from front to front or rear to rear. They are often compatible diagonally (right front to left rear) (left front to right rear).
Finally, you can have a switch box for the auto up/auto down feature inside the door panels. You need to check for power at the W motor and then backtrack.
usually this means you need a new window regulator.
Section 01-11: Glass, Frames and Mechanisms
1997 Crown Victoria, Grand Marquis Workshop Manual
REMOVAL AND INSTALLATION
Window Regulator, Power
Front Door Removal
If front door window glass (21410) is in the down position and is inoperable, the following steps must be taken; if front door window glass is operational, go to Step 2.
Remove front door trim panel (23942) and front door trim shield (237A04). Refer to Section 01-05 .
Disconnect battery ground cable (14301). Refer to Section 14-01 .
Disconnect window regulator electric drive harness connector.
CAUTION: Be careful not to strike or scratch front door window glass because it can break. Remove window regulator electric drive retaining screws through holes.
Remove window regulator electric drive (23394) from front door power window regulator.
Raise front door window glass to full up position by hand and secure with tape.
Go to Step 5.
Remove front door trim panel and front door trim shield. Refer to Section 01-05 .
Remove front door window glass as described.
Disconnect window regulator electric drive harness connector.
NOTE: Use care not to enlarge sheet metal holes in the door inner panel.
Remove two 1/4-inch rivets retaining lower bracket of front door power window regulator to inner panel. Use drift punch to knock out center pins for each rivet. Using a 1/4-inch diameter drill, drill out remainder of rivet.
Remove three window regulator electric drive retaining screws from inside door to remove window regulator electric drive from front door power window regulator.
Remove two window regulator retaining nuts.
Remove front door power window regulator from front door (20124).
Lubricate regulator mechanism with Teflon® Lubricant E7FZ-19590-A or equivalent meeting Ford specification ESB-M1C111-A.
Install front door power window regulator minus motor (23208) into access hole in inner panel.
Position front door power window regulator using upper studs and tabs on window regulator electric drive mounting bracket.
Install rivets retaining front door power window regulator to door inner panel (1/4-20 x 1/2 inch screw and 1/4-20 nut and washer assemblies or equivalent metric fasteners may be used).
Install two upper front door power window regulator retaining nuts.
Install window regulator electric drive with three screws. Do not overtighten screws.
Connect the window regulator electric drive harness connector.
Install front door window glass.
Adjust front door window glass as described.
Install front door trim shield and front door trim panel. Refer to Section 01-05
The window regulator or plastic tabs attached to the glass is likely broken and will need to be replaced, if you can hear the motor running but the glass does not move. If you're handy with fixing cars, you can purchase a window regulator and change it out fairly easily by removing the door panel and swapping the regulator out. If the plastic tabs on the glass are broken, you will have to take it to an auto glass shop to have new tabs replaced on the glass.
You need to buy a window regulator and motor assembly and replace the unit as a whole. The plastic slides wear out or the plastic ends break off the electric motor cables. A new regulator and motor is around $100 at the auto parts stores. If you pay to have it fixed it is around $350.00
You should first determine if the window switch (centre console) is sending power to the door motor, in the "UP" position.
If the motor is 'trying' to operate (i.e. you can hear the motor click when switch is UP), then the glass may simply be jamming in the tracks, or needs adjusting on the regulator rail.
I would recommend you buy some Graphite Powder and springle it down both the inner/outer tracks to lubricate.
If no power is evident to the motor, then you should suspect bad (or damaged) contacts inside the switch.
If you're unsure about the switch but confident enough to remove the inner door card/panel, then you can try connecting each of the window motor "wires" to a terminal of another car battery - this will manually operate the window motor. Then, connect to opposite battery terminals to power the motor in the opposite direction.
If the window motor proves faulty, then obtain you could obtain a 2nd hand electric door regulator from your local auto wrecker.
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Cars getting old but if your handy getting the door panels off and removing the motor the motor has clutch Plastic bumpers that die of old age. Auto parts stores sell these in a pak of three made as a Help product- Motormite- Dorman/ This is a common old ford with electric windows problem
One of two problems. Window motor or window regulator. Began by removing the door panel. Peel down the vapor barrier. This will expose the motor, you will see three star screws, remove these and then remove the motor. Remove the plate and inspect the plastic plugs in the motor, if defective replace with plugs or ball bearings, pack with wheel bearing grease. If the motor is ok. Then remove the window regulator. Using a punch punchout the rivits using a 1/4 inch drill drill out the aluminum holding in the regulator and the glass. Replacw with 1/4 inch bolts and nuts.