Hi, The problem with your pass side window is the drivers side power window switch. I have had this same problem on my 1993 Aerostar.
It's the switch because the motor is getting power to go up but not down.
Did you check for power to the motor? If the switch doesn't work then the motor won't work. If there is power to the connector that hooks onto the motor then the part may be defective, if not then trace it back.
Hi .. To change the power window motor .. Remove the door shell of course You will see the motor for the window .. Unplug the power of course . The motor is actually riveted in so you need to drill out the rivets. Remove the old unit . Then install the new motor with self tapping screws . Plug in the power . Be sure to secure the window when you remove the motor so it doesn't fall. I have not done this yet but am about to embark soon and have done some research . Good luck ..
check on eBay for a power window motor. from what i have heard its only 1991 -1994 mercery capri only
To change a power window motor, first, disconnect the vehicle's battery to ensure safety. Remove the door panel by unscrewing any screws and gently prying it off to access the window mechanism. Disconnect the electrical connector from the old motor, then unbolt it from the regulator and replace it with the new motor. Finally, reassemble the door panel and reconnect the battery to test the new motor.
To change the power window motor on a 1991 Dodge Dynasty, start by removing the door panel to access the window mechanism. Disconnect the electrical connector from the old motor and unbolt it from the regulator. Install the new motor by securing it with bolts and reconnecting the electrical connector before reassembling the door panel. Finally, test the window to ensure it operates correctly.
power window motor removal 93 sunbird
how to replace1994 grand drivers side power window motor
Change the motor. These cars are notorious for this.
Remove the window regulator and motor from the door as an assembly. Drill out rivets that hold motor to regulator and replace motor. Regulator needs to be riveted back into door for reassembly
Check power to window switch. Common cause. Check power to window motor. If none then check fuses/relays.