Your ignition coils are responsible for transforming your vehicle’s battery voltage into the high-voltage spark needed to ignite the air-fuel mixture in each cylinder.
In this video, Arnold Auto Repair explains how ignition coils work, what happens when they fail, and how our technicians diagnose and replace them for smooth, consistent engine performance.
When an ignition coil begins to fail, you may notice rough idling, reduced power, poor fuel economy, or the check engine light turning on.
In severe cases, your vehicle may misfire or have trouble starting. Faulty coils can also cause unburned fuel to reach the exhaust system, potentially damaging the catalytic converter over time.
At Arnold Auto Repair, our ASE-certified technicians use advanced diagnostic tools to scan for misfire codes, test coil resistance, and inspect related ignition components.
If replacement is necessary, we install high-quality coils that meet or exceed OEM standards, ensuring dependable spark and long-term reliability.
We also inspect spark plugs and wiring to ensure the entire ignition system is functioning correctly.
Replacing bad ignition coils not only restores power and fuel efficiency but also helps prevent costly repairs down the road.
Ready to schedule?
Visit Arnold Auto Repair at 1401 Wall Avenue, Ogden, UT 84404 or call (801) 395-0666 to book your appointment today.
