The purpose of an auto ignition coil is to convert the low current from the car battery into enough power to ignite the fuel and start the engine. When something goes wrong with an auto ignition coil, it can cause a range of mechanical and performance issues.
This is one of the first symptoms of auto ignition coil failure. If you have a faulty auto ignition coil, your vehicle will feel sluggish and you will experience a loss of power. This is the desired combustion caused by irregular sparks. When you experience a power outage, have your vehicle serviced to avoid further damage that will cost you more to repair.
Check engine light on
If your vehicle stalls or is difficult to start, the check engine light will come on. This problem is usually caused by a faulty auto ignition coil.
poor fuel economy
If you drive the same distance but visit the gas station more often, it indicates a faulty auto ignition coil. When the auto ignition coil fails, an incorrect 02 sensor reading sends more gas than needed. Since the spark plugs aren't getting enough power, you'll fill up more often, and to compensate, the system will inject more fuel.
When your vehicle starts to catch fire, a bad auto ignition coil could be the culprit. When the unused fuel in the combustion cylinder explodes, the vehicle makes a loud noise, causing black smoke to rise from the exhaust and a strong smell of gasoline. If the problem is not dealt with immediately, it will cause damage to the system.
A faulty auto ignition coil can cause your vehicle to stall when accelerating. In extreme cases, a misfire can cause your vehicle to stall while you are driving. Misfires are caused by one of the cylinders firing incorrectly or not firing at all. Emissions can damage catalytic converters and other engine components.
Hard starts and stalls
The ignition needs to fire at the right time for the engine to start and the vehicle to run. If the auto ignition coil fails and is not supplying the required voltage to the spark plugs, you will find it difficult to start the engine. If your vehicle stalls or even shut down completely while parked, the auto ignition coil may be damaged, sending irregular sparks to the spark plugs.
sputtering and coughing sounds
If you hear splashing and coughing noises when starting the engine, the auto ignition coil is causing the problem. The sound came from a cylinder that was completely misfiring during ignition.
twitching and vibrating
Another problem caused by a faulty auto ignition coil is vibration when the vehicle is idling. You also feel the vehicle hesitate and jerk forward when you hit the gas to increase speed.