1. Preparation:
* Gather your tools: You'll need a set of sockets (metric), screwdrivers (Phillips and flathead), possibly a ratchet, pliers, and potentially a panel removal tool to avoid scratching the interior. A shop manual specific to your 1986 Fiero is highly recommended. It will provide detailed diagrams and torque specifications.
* Disconnect the battery: This is crucial to prevent electrical shorts and accidental activation of the window while working.
* Obtain the correct motor: Ensure you have the correct power window motor for your 1986 Fiero and the specific door you're working on. There may be slight differences between driver and passenger side motors.
2. Door Panel Removal:
* Remove the interior door panel: This usually involves removing screws around the edges of the panel, possibly some plastic clips, and potentially disconnecting the window crank if you have a manual window setup. Be gentle to avoid breaking the clips. Your Fiero's shop manual will show the exact locations of fasteners.
3. Accessing the Window Regulator and Motor:
* Locate the window regulator: This is the mechanism that moves the window up and down. The motor is usually attached to it.
* Disconnect the electrical connector: Carefully disconnect the electrical connector from the old motor. Take a picture or make a note of how it connects to avoid confusion during reassembly.
* Remove the old motor: This often involves removing screws or bolts that attach the motor to the regulator.
4. Installing the New Motor:
* Attach the new motor: Carefully attach the new motor to the window regulator using the same screws or bolts you removed from the old motor.
* Reconnect the electrical connector: Connect the electrical connector to the new motor, ensuring it's securely fastened.
5. Reassembly:
* Reinstall the window regulator: Make sure the regulator is properly seated and functioning smoothly.
* Reattach the door panel: Securely reattach the door panel, making sure all the clips and screws are in place.
* Reconnect the battery: Reconnect the battery.
6. Testing:
* Test the window: Test the power window to ensure it operates correctly in both up and down directions.
Important Considerations:
* Window regulator condition: While you're in there, inspect the window regulator for wear and tear. If it's damaged, it might be wise to replace it at the same time, as a faulty regulator can damage a new motor.
* Grease and lubrication: Lubricate the window regulator mechanism with appropriate grease to ensure smooth operation.
* Wiring: If you encounter any wiring issues, carefully trace the wires and consult a wiring diagram. Improper wiring can damage the new motor.
Disclaimer: This is a general guide. Improper installation can lead to damage or injury. If you're not comfortable performing this repair yourself, it's best to seek the assistance of a qualified mechanic. Always refer to a 1986 Pontiac Fiero shop manual for detailed instructions and diagrams specific to your vehicle.
