Mopar Coils

Helpful Information

What are coils in a car?

Auto coils can refer to the ignition coil or coil springs of a car. Ignition coils increase the low voltage from your car battery to help the spark plugs produce the necessary energy to ignite the air-fuel mixture in your engine. Coil springs are suspension components that work with the shock absorbers to minimize any road vibrations that your car can experience as you drive.

How many coils does a car have?

Newer vehicles can have more than one ignition coil since each spark plug will have a corresponding ignition coil for it. As for coil springs, cars will have two pairs of coilovers for the front and rear suspension assemblies.

What are car coil springs made of?

Suspension coil springs can be made of steel, high carbon wire, non-ferrous metals (those with little or no iron), stainless steel, and other similar materials that can support varying loads. Additionally, coil springs are often color-coded to represent their specific load capacity.

How long do coils last in a car?

Ignition coils typically last about 100,000 miles or more, depending on vehicle maintenance. These coils can still fail over time or after reaching a certain mileage breakpoint due to their copper wires getting exposed to heat and moisture. Coil springs are also prone to wear and tear. They’ll get worn out sooner if you drive your car on uneven roads and terrain more often.

What happens when a coil goes bad on a car?

If your car runs with failing ignition coils, it may not start whenever you need it to. Faulty ignition coils can also cause engine misfires. Coil springs will tend to get softer and sag over time. This makes your suspension system more susceptible to uneven roads and makes driving uncomfortable.