Here's a general guide, but always refer to your vehicle's specific documentation:
1. Locate the Ignition Module:
* Common Location: The ignition module is usually mounted on or near the distributor, often on the firewall or inner fender near the distributor. It's usually a small, rectangular box with electrical connectors.
2. Disconnect the Battery: This is CRUCIAL to prevent accidental short circuits and damage to your vehicle's electronics. Disconnect the negative (-) terminal first.
3. Disconnect the Connectors:
* Carefully unplug the electrical connectors from the old ignition module. Take note of their orientation—some connectors might have a specific way they need to be plugged in. Take pictures if you are unsure.
4. Remove the Old Module:
* Depending on how it's mounted, you might need to remove some fasteners (bolts or screws). This is usually straightforward, but might require a socket wrench or screwdriver.
5. Install the New Module:
* Carefully position the new ignition module in the same location as the old one.
* Secure it using the original fasteners. Make sure it's firmly seated and the mounting is secure.
6. Connect the Connectors:
* Carefully plug the electrical connectors back into the new ignition module, ensuring they're correctly aligned and securely seated. Refer to your pictures or diagram if needed.
7. Reconnect the Battery: Reconnect the negative (-) terminal to the battery.
8. Test the Ignition System:
* Try to start the car. If it starts and runs smoothly, the installation was successful. If it doesn't start or runs poorly, double-check all connections and ensure the new module is compatible with your vehicle.
Important Considerations:
* Compatibility: Ensure the replacement ignition module is the correct part number for your specific 1991 Buick Skylark 2.5L engine. Using an incorrect part can lead to further problems.
* Repair Manual: A repair manual specific to your car's year and model is invaluable. It will have detailed diagrams, instructions, and torque specifications.
* Professional Help: If you're uncomfortable performing this task, it's always best to seek professional help from a qualified mechanic. Improper installation can cause further damage to your vehicle's electrical system.
Remember, safety first! Working with car electrical systems can be risky if you're not careful. Always disconnect the battery before starting any work.
