A bad ignition coil usually does not drain your battery. It only draws power when you turn the ignition key on. However, if another electrical component fails, it may power the coil when the car is off. Improper wiring can also cause a battery drain by keeping the ignition coil powered.
Moreover, a failing ignition coil may cause the vehicle’s electronic components to work harder, leading to additional battery drain. Symptoms of a bad ignition coil include engine stalling, rough idling, or trouble starting.
If you suspect a bad ignition coil is draining your battery, troubleshoot by checking the coil’s performance and the battery’s condition. A multimeter can help you measure the battery voltage while the engine is running.
Addressing battery drain issues often requires a thorough inspection of various components. Next, we will explore additional factors that contribute to battery drain and how to effectively diagnose and resolve these issues.
Related Post: