How to Change a Damaged Ignition Box
Having a busted ignition box can definitely prevent you from having a smooth ride. This is due to the fact that the ignition control module in your car is responsible for controlling the spark sequence of the ignition. It's also the component tasked to fire the ignition coil. Over time, this component may get damaged due to extreme heat inside the engine compartment. To help you replace the ignition box in your car, here's a quick guide that you can follow:
Difficulty level: Moderate
Duration: 1 hour
Tools to be used:
- Phillips screwdriver
- Ratchet and socket set
- Open-end wrench
- Floor jack and jack stands
- Silicone dielectric grease
- Safety gloves
- New ignition box
Note: Always wear safety equipment, such as safety gloves and glasses, whenever you're repairing your vehicle. This protects you from possible injuries during the replacement process.
Step 1: Park your car on a level surface and turn off the engine. Let the engine cool down for a couple of minutes before beginning the replacement procedures.
Step 2: Disengage the negative battery cable from the terminal using an open-end wrench. Make sure that you always disconnect the negative battery cable of the car to avoid having electric shock while performing the replacement.
Step 3: Search for the location of the ignition control module assembly; you can usually find this near the firewall. Unplug the wires of the spark plugs from the top of the assembly.
Step 4: Grab your socket wrench, and use it to detach the four electrical connectors from the control module assembly. What you need to do is loosen the four bolts that attach the assembly to the camshaft cover.
Step 5: Remove the ignition control module assembly from the motor, then completely detach it from the engine compartment.
Step 6: Uninstall ignition coils from the assembly, and use a socket wrench to remove the bolts that secure the ignition box to the bracket.
Step 7: Get your new ignition box from the package, and inspect the component. Place the bracket onto the new ignition control module assembly using bolts. Then, install the ignition coils to the assembly.
Step 8: Secure the ignition box assembly to the motor with bolts. Reinstall the four electrical connectors to the assembly, and connect the spark plug wires to the top of the ignition control module assembly.
Step 9: Return all of the components that you uninstalled earlier. Once everything's back in its place, reconnect the negative battery cable to the batter terminal.
- The ignition control module may vary in its location per vehicle make, model, and year. Some ignition control modules are mounted on the engine, while some are placed in or on the distributor. Plus, it can also be mounted to the underhood sheet metal.
- If you're having difficulty locating the ignition box, consult with your vehicle manual, or ask an expert mechanic for advice.
- Keep in mind that the ignition system of your car is composed of several different parts, and any of these parts may be causing the problem you are experiencing. It's best to rule out certain causes, so that you can trace the culprit and confirm if it's the ignition box.