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How to Fix Car Ignition Problems

The car won't start unless the switch transmits an electrical signal to the starter. Normal wear and tear over time can cause the switch to malfunction.

Utilizing specially designed tools, you are able to remove the trim on your steering column and access the ignition cylinder module. Check the repair manual to get guidance on how to do this in a safe manner.

1. Check the Switch

A bad switch is among the most frequent ignition problems. It acts as an intermediary between two contacts, controlling the time when relays are activated and deactivated. It is more likely to fail since it doesn't channel full power of devices like the starter. However, it's still possible for the switch to become damaged or corroded.

One sign of a bad switch is the difficulty in turning the key. This could be due to various reasons that include incorrectly inserting a key or wearing down the mechanism over time. It's not unusual to see people mix their keys up with someone else's. This can result in mechanical damage.

Before calling a locksmith you can try a few things. First, make sure that the battery is charged and that there aren't any other electrical issues that could be affecting the system. It is also important to check the voltage of every component to ensure they are sufficient power. After you've completed the above steps, you're ready to begin troubleshooting.

Fortunately the ignition switch is easy to replace. It is connected to the ignition module, a round component that holds everything together. It's necessary to use a flathead and something long enough to push the pin into. This can be anything from a paintbrush handle to a Kabob skewer. However, you should stay clear of anything that is brittle and break within the hole.

Remove any trim pieces that overhang the switch when you're ready to get started. Once you've done this take off and loosen any screws that keep the switch in place and then gently pull it out. Depending on the model, you might also need to disconnect the wires that connect to it. You can learn how to do this in the manual of your vehicle.

If the ignition switch isn't working it's recommended to have it replaced by an expert. It is possible to replace it by disabling the steering column, which could result in unintentional deployment of airbags if done improperly. For this reason, it's best to have your locksmith take care of this for you.

2. Verify the Wire

Your car may not start if it is difficult to turn the key or if it will not start. This could be due to a number of components within the ignition system. Understanding how the ignition system works will help you identify problems and make the necessary repairs.

The ignition switch is a low voltage multi-pole electrical switch that is turned by the key. It has four positions: off run, accessory, and "lock." When the switch is in the lock position (which usually has an indicator in red), the ignition circuit is active and it's impossible to start the engine.

You can use a voltmeter quickly test the ignition switch and ignition coil. The voltmeter should read around 12.6 volts when the ignition switch is in the run position. If the voltage falls below that, it indicates there's an open circuit in the system. This could be at the solenoid, the battery or the ignition coil itself.

Remove the electrical connector from the ignition switch so that no other components interfere with the test. Set the voltmeter in the continuity or resistance modes and then place one lead on one of the terminals on the ignition switch. The other lead should be connected to the positive terminal of the battery. If the voltmeter is "open" or fails to register any voltage, you should replace the switch.

Use a new ignition key and a high-quality ignition cylinder when replacing the switch to ensure that your vehicle starts and runs correctly. When replacing the ignition switch, be cautious not to touch the ignition cylinder pins with your tools or they'll get stuck and your engine won't be able to start. In certain vehicles, you'll need to remove the steering column and the gear selector to access the ignition cylinder. This can be difficult, and it is not recommended until you have an owner’s manual that says it's safe. Otherwise, serious damage to the steering column and shifting mechanism is possible.

3. Check the Cylinder

If you've gone through the wiring, battery and ignition and key replacement switch but can't get your car to start, it could be time to look at the cylinder. The cylinder is the component that holds the key and is mechanically attached to the steering lock so that a would-be burglar can't drive the car without it.

If your cylinder has started to wear out, you might be noticing that your key isn't able to turn. Sometimes, the pins within the cylinder become stuck when they adjust to the shape of your key, which can cause your car not to start. The cylinder might also be loose. Tapping it with the tackhammer can help. Be careful not to disturb the springs inside and ensure that the key is correctly inserted before tapping.

Another sign that your cylinder is in trouble is when you have to jiggle the key and test it in various positions before it starts. This is a sign of trouble, Fix Car Ignition and it must be addressed immediately as it will only worsen over time.

To examine the cylinder, you will need to remove the cover on the steering wheel and disconnect the battery. The old ignition switch should be simple to remove, as should the cylinder for ignition made of metal. If you don't have an additional ignition switch around, it's that you could take your original ignition switch and the cylinder to a locksmith and reuse them, as long as they are in good condition. After replacing the ignition switch and cylinder, ensure that you reconnect the wiring, secure it and reattach the covers and panels were removed.

4. Check the Spark Plugs

The spark plug is your ignition system's final link. When it breaks, the engine can't run. It could be that your car will not start at all, or Fix Car Ignition it will run badly. In any case, the root is likely to be one of a few things that prevent or impair the flow of electricity across the spark plug gap which causes your engine's air and fuel mixture.

Before you begin working on your spark plugs, be sure that you work on a level surface and employing protective gloves and tools to keep from being struck. Spark plugs are hot and could cause serious injuries when you touch them with bare skin.

You might notice a light brown or gray residue on the edge of the electrode if a spark plug is bad. The electrode may also have a dark coating. These deposits, or corrosion, can prevent high-voltage electrical current from crossing the gap between the spark plug and igniting your engine.

If you suspect your spark plugs might be the cause you can test them by having them remove them from the tube that is inside the ignition coil. This can be done by disconnecting the coil from the plug wire and following the correct procedure for your car to remove components that cover the spark plugs. After removing the plugs, place them on a metal surface that is grounded, and start the engine. If they are working you will see an intense blue spark near the point of the central electrode.

If you don't see a spark, you've found the problem. The next step is to work through the ignition chain, testing each part until you can determine what is blocking the spark plugs from performing their job. It's important to remember that all systems wear out and break down over time, and this is especially true of ignition systems. But, regular maintenance can to slow down the process and avoid a major problem at the worst time.