What are the precursors of a damaged car ignition coil?
2 Answers
Before the ignition coil is damaged, the vehicle may suddenly experience abnormal shaking while driving, accompanied by a noticeable loss of power. The following are specific descriptions of the types of ignition coil failures: Ignition coil winding short circuit: Unable to convert the low voltage from the battery to high voltage, resulting in insufficient ignition energy, and the spark plug is prone to carbon deposit contamination. Ignition coil surface discharge: Discharge and sparking on the outer surface of the ignition coil, mainly due to dirt and severe moisture on its surface. Ignition coil insulation aging: Often caused by high temperatures after the engine is hot or frequent ignition under heavy load, leading to a rapid rise in the ignition coil temperature and subsequent aging.
I can totally relate to this issue from my last experience. While driving, I could clearly feel the engine shaking violently, like a phone stuck in vibration mode. The acceleration was particularly weak, and even flooring the gas pedal felt sluggish when going uphill. One cold morning, the car failed to start three times in a row, and suddenly the yellow engine light on the dashboard came on. The most annoying part was the fuel consumption skyrocketing—normally a full tank would last 500 km, but back then the low fuel warning came on at just 400 km. Later, I found out it was due to failing ignition coils. The mechanic said these symptoms were classic signs of a dying ignition coil, and catching it early could save a lot of money.
