How to Test a Ignition Coil


Technicians and engineers use ignition coils that convert the low-voltage, high-amperage electric current of the module controlling the ignition into a greater voltage and lower current that is required to run the ignition system.

How to Tell if the Ignition Coil is Bad

Then, ignition coils are the device that converts the low voltage high-amperage electrical current coming generated by the control module for ignition to the high-voltage, low-amperage voltage for your ignition to function. It is therefore important to determine whether your coil that controls the ignition coil is damaged.

Go to this link to find out about the indicators of a defective ignition coil.

How to Test the Ignition Coil using a Multimeter

connect the ignition coil to a multimeter

The ignition coil serves to generate an electrical signal required to ignite the process in internal combustion engines. It is possible to test your ignition coil using this instruction:

Remove your ignition coil’s wire for ignition and then connect it to the jumper wire

Make use of a multimeter to test the voltage of the ignition wire once you’ve disconnected it.

Find out what time it will take for an ignition cable to cease producing electricity after you remove it from the coil that ignites it by taking the voltage. If there’s no electricity the ignition coil has been shorted out and will need to be replaced.

To further test it you can connect the ignition coil’s cable to the battery, instead of turning on to turn on the ignition. It should start producing electric current immediately when the ignition coil is working well. In the event that your ignition unit does not perform after that, you’ll need to replace it.

On Replacing an Ignition Coil

The lifespan of an ignition system is dependent upon a myriad of variables. This includes the condition of your car as well as the miles traveled, the number of times that the ignition coil is utilized with every start, as well as environmental elements like temperature.

If you drive a car equipped with an engine that is fuel-injected and a fuel injection system, you can anticipate the ignition coils last for upwards of 80,000 kilometers before requiring replacement. However, if you’ve experienced issues in the past with defective engine coil packs it is possible replacement more often. A coil for ignition that is failing can damage the spark plug’s tip and will need the replacing of spark plugs too.

How often Should Ignition Coils be Replaced?

The life expectancy of an ignition system is dependent on a variety of aspects. This includes the age of your vehicle and the number of miles you drive, the number of times that the ignition coil is utilized with every start, and other environmental elements like temperature.

If you own a car that has an engine that is fuel injected it is possible for the ignition coils to last for upwards of 80,000 kilometers before requiring replacement. However, if you’ve encountered issues with defective engine coil packs You may need replacement more often. An ignition coil that’s not working properly can cause damage to the spark plug’s tip that will require replacing of spark plugs too.

How Much Does It Cost To Replace An Ignition Coil?

The cost to change ignition coils is dependent on the car. The more aging the vehicle is, the more likely it is that the ignition coils are likely to require replacement. If you own a new vehicle, the ignition coils will require replacement, but not as often. If your ignition coil is located in an area that is difficult to access and repair, the mechanic could be charged more for the job. The ignition coil may be difficult to locate when it’s an unusual ignition coil.

If you own a vehicle that is 10 years old it is possible to spend between $300-$500 for the replacement of an ignition coil and labor. If you have to replace the coil in addition, the price of labor will likely be added by another $300.

how much does an ignition coil cost

Should I Replace all Ignition Coils at Once

You must take into consideration whether or not you need to replace all the ignition coils at once. It is a vital element that makes up the entire ignition system and it’s essential to ensure that it works in a proper manner. However, certain ignition coils do not function as well as others, and these ignition coils could have a harder time determining and fixing.

The replacement of ignition coils is among the most frequently requested and crucial auto repairs that our customers have questions about. The ignition coils are the components that transmit current to spark plugs and so a replacement of the ignition coil is a solution to most ignition-related issues on your vehicle.

How to Replace the Ignition Coil

The next steps will show you how to change the ignition coil with the assistance of a clip.

1. Remove the battery.

2. Make use of a clip tool to loosen four screws on the two ends of each bracket

3. Unscrew all four screws and take them off the brackets.

4. Remove the old coil and place a new coil in its place.

5. Tighten screws in clockwise sequence (opposite directions)

6. Connect the battery when all the components have been installed


An ignition coil that is defective can impact your engine in various ways. Easybom hopes that this will help to identify a damaged ignition coil and address it in a timely manner.

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Written by Morgan