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Kia Sorento Ignition Coil

Troubleshooting Tips for a Kia Sorento Ignition Coil

The ignition coil plays an important role in the ignition system. It serves as a transformer by multiplying the low voltage of electricity from the battery source-creating the spark to ignite the fuel and start up your engine. However, prolonged use of this part will eventually lead to wear and tear. And if it wears out, you have to either replace it immediately or push your car manually. So before the ignition coil of your Kia Sorento quits, here's how you can diagnose its problems:


If you have been experiencing troubles starting your engine, chances are, your Kia Sorento ignition coil is the problem. You may test this by simply pulling a spark plug from the engine, cranking the engine, and inspecting the center electrode of the plug for a spark. You should be able to see a bright blue spark every time you fire the cylinder. If you don't see a spark or only a weak orange spark, then your ignition coil is the culprit. You have to check the resistance levels of the coil using a digital multimeter. Set the resistance range to 20K-ohm setting and check the primary and secondary windings. If the multimeter reads under 1.6 for the primary and less than 11.00 for the secondary, then your coil needs to be replaced.


A bad ignition coil also results in car stalling or loss of power. You may check the resistance of the secondary terminals using a multimeter. It should read 8,000 to 12,000 ohms to ensure that it is in good condition. If it exceeds the required ohms, then it should be replaced. Driving with the coil in this state would cause the vehicle to stall occasionally, although the engine would seem to be unaffected. There will also be trouble starting the vehicle, so it is best to replace the coil if it failed the multimeter test.

Decrease in fuel economy

Have you been noticing a sudden increase in your fuel consumption or a decline in your gas mileage? Then this might be caused by a defective coil. Since the coil cannot produce the adequate voltage to start the engine, this loss in performance could possibly cause poor fuel economy. It takes more fuel for the car to run when there is a minimal power to reach the spark plugs. Replacing the coil is the best solution for this problem.

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  • Three Tips on How to Keep the Spark of the Kia Sorento Ignition Coil

    If your trusty Kia Sorento has been exhibiting signs and symptoms of a bad ignition coil lately, such as misfiring, stalling, or even increasing fuel consumption, then you have to replace your coil immediately. Because if you don't, you might end up pushing your SUV in the middle of the road or having it towed. So if you are going to buy a replacement ignition coil today, then here's our two cents on how you can keep your Kia Sorento ignition coil in good condition.

    • Inspect the coil for cracks.
    • Visual inspection is always the first thing to do before subjecting car parts to a test. Check your Kia Sorento ignition coil for any mechanical damage or crack. These defects could be caused by moisture and other damaging factors, such as road salt or heavy rain that come in contact with the coil. You may also want to make sure that all the wirings and plug are intact and are free from rust. Double-check if there is an enough voltage supply coming from the battery. Finally, inspect if the valve seals are all intact.
    • Clean the coil regularly.
    • One of the best advice to keep car components in their best shape is to keep them clean. Using a soft and lint-free cloth and Carby Cleaner, carefully wipe the ignition coil and its silicone seals. This will make them free from sludge, grease, and dirt build-up to make it more efficient in doing its job. Do this whenever you wash your car to ensure that you won't have problems starting your car.
    • Test your ignition coil.
    • To ensure that your coil is doing its job right, more than a visual inspection, testing its resistance using a digital multimeter is an efficient way to do it. First, check the primary resistance of the coil. Connect the red lead to the coil's positive electrical connector, and the black lead to its negative electrical connector. The reading for a good primary resistance is between 0.3 and 1.0 ohms. To check the second resistance, connect the ohmmeter's black lead to the coil's positive electrical connector, and the red lead to the coil's terminal. It should read 8,000 to 11,500 ohms. If it exceeds the prescribed range, then the coil should be replaced.