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Ignition Module

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Having a faulty ignition module in your vehicle can be a total will leave you feeling frustrated every time you try to start your vehicle. And this problem is not something that you can just ignore or put off, you need to address it right away to be able to use your vehicle properly. To find out how to diagnose if your vehicle has a busted module, here's a quick guide to help you out.

How it works?

Before you diagnose the problem of your vehicle, you need to know what an ignition module does first. This component is usually located near or inside the distributor housing, and it's actually like a small computer in the ignition system. The first thing that it does is interpret signals coming from the ignition's magnetic sensor. After that, it uses the signals to open and close the ignition coil ground circuit, which controls your car's spark timing, length, and intensity. Simply put, this component helps power up your ignition components.

What are the signs and symptoms of a faulty ignition module?

To find out if your module is broken, here are some of the signs and symptoms that you need to look out for.

1. Overheating

Having ignition modules that overheat is a common occurrence. One telltale sign of an overheating module is having rich fuel mixture, which you can detect by its strong odor. This problem is usually caused by an internal short in the component itself, and if left unchecked, it can lead to engine stalling or failure as well as poor fuel economy.

2. Engine stalling

Ignition modules are equipped with small relays whose wires can accumulate silicone vapor after some time. Since these wires are in charge of supplying power to the module, having faulty ones can usually lead to a stalling engine. If you're unlucky, the engine may even fail while you're driving, especially when you decrease your speed.

3. Unstable temperature

Faulty ignition modules can also cause the engine to have unstable temperature. When this happens, the engine may experience loss of power and it may even stall. Usually, the engine will start again as soon as it cools down. If this problem persists and restarting becomes a cycle, your engine may completely fail after a while.

4. Poor acceleration

Having a damaged ignition module can also cause your vehicle to jerk and produce vibrations every time you step on the gas. Usually, the jerking movement becomes more prominent when you suddenly accelerate from a full stop. In most cases, the engine will hesitate or slow down instead of speed up.

How to know if the ignition module is the one causing ignition problems?

To confirm if the ignition module is the source of your ignition woes, you can perform this simple test in your garage or wait until it's already dark if your car is parked outside.

Step 1: To begin, turn the lights of your garage off and turn your headlights on.

Step 2: Next, turn the ignition to the .on. position and observe the behavior of the headlights.

Step 3: If the headlights maintain their brightness and don't dim, the ignition module may be broken. On the other hand, if the headlights become dim, you need to look elsewhere for the problem. You may want to check the starter motor or solenoid next.