All Ignition coil and ignition system information here. From why they fail, to how to test them, and even why they are used in modern day vehicles. Scroll down to view an article that may just have the answers to your questions.
Ignition Coils and the benefits of electronic ignitions
Signs of a failing ignition coil
Mileage to replace igntion coils?
Why a multimeter is not the best method to test ignition coils
Understanding Multi Coil Ignition Systems
Ignition Coils and Coil Packs - Overview
Difference between round & square coils for GM trucks & SUVs 4.8, 5.3, 6.0, & 6.3L V8.
