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      How Much Does an Ignition Coil Cost?
Symptoms of Bad Ignition Coils
How To Replace Ignition Coils

Ignition Process    

The ignition coil uses the battery voltage and multiplies it to induce a spark in the spark plug, which in turn, ignites the air-fuel mixture in the engine's combustion chamber. It works on the principle of a step-up transformer. The ignition coil includes two coils inside it: the primary windings and the secondary windings. The secondary coil has a larger number of windings than the primary coil. This is the key to the multiplication of the voltage. The alternating current from the battery flows through the primary windings, which creates an alternating magnetic field. This magnetic field generates a corresponding voltage in the secondary coil, which amplifies the voltage supplied to the primary coil. This voltage is used to ignite the spark plugs via the distributor. The typical voltage produced by the ignition coil ranges from 20,000 volts for mainstream vehicles to about 85,000 volts for racing automobiles.

Ignition coils can be checked for cracks and loose wires, whenever possible, as a precautionary measure. A faulty ignition coil will not provide the necessary voltage to the spark plugs, resulting in a sluggish engine performance. In extreme conditions, the ignition coil may prevent the engine from running, causing a no-start condition. In such situations, repeated attempts to start the engine will damage the spark plugs, as well. Common symptoms of a bad ignition coil include engine misfire, illumination of the Check Engine light in your vehicle's dashboard and rough running of the engine. Any problem with an ignition coil is ultimately going to affect the engine efficiency. Hence, a faulty coil should be inspected and replaced at the earliest.

Choose your vehicle's right year, make and model and find your matching parts!

Buy Auto Parts is the best place online to get replacement ignition coils that come with a warranty at unbeatable prices. We stock a wide range of OEM replacement and aftermarket parts for every make and model. To find the right ignition coil for your car, simply tell us your car's year, make and model. Your order will be shipped from the warehouse closest to your location. We offer free shipping for purchases over $99. Our products have been throughly tested to meet or exceed industry standards. You can reach us on our support line at or leave us an email at [email protected], if you need help in choosing the part. Please feel free to leave us an online review. We value your feedback!

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