Fix My Lamborghini
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IGNITION COIL FAULTY SYMPTOMS

If a vehicle is behaving intermittently and is giving its driver some trouble in smooth driving, then it could indicate that the ignition coil of that vehicle has gone bad. Symptoms may vary depending on the severity of the ignition coil failure. Here are some common symptoms of bad ignition coil.

1. Backfiring
The backfiring caused by your vehicle can indicate the symptoms of the ignition coil failure in its early stages. The backfiring occurs when the unused fuel in the combustion cylinders of the engine leave through the exhaust pipe. If this problem is left unaddressed, then it can result in the costly repairs. The backfiring problem can be detected by the emission of  black smoke through the exhaust pipe. The smell of gasoline in that smoke may also be a give away of ignition coil failure.

2. Fuel Economy
Another symptom for a faulty ignition coil is the fuel economy has become worse. If your vehicle is getting less mileage than it was before, then it could mean that the ignition coil failure has occurred.

3. Engine Misfiring
Engine misfiring will be seen in a vehicle whose ignition coils have failed. Trying to start the engine of such a vehicle will result in engine misfiring like a coughing spluttering noise. When driving at high speeds, jerking and spitting will be seen in the behaviour of that vehicle. A vehicle with a failed ignition coil will also result its vibration when it is idling.

4. Vehicle Stalling
The ignition coil failure will also result in the stalling of that vehicle. This will occur because of the irregular sparks sent to the spark plugs by the faulty ignition coil. The vehicle may stop completely when brought to stop leaving you having trouble to restart.

5. Engine Jerking, Rough Idling, Poor Power
Another symptom is engine rough idling, jerking and hesitate even when accelerating. Poor powerwill be felt when you drive the car.

6. Engine Light Code On / DTC On
Commonly the code is: P0351 (Ignition Coil – Primary/Secondary Circuit Malfunction). If the ignition coil has a malfunction, the engine light code in the combination meter will turn on. A scan tool can confirm this.
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7. Engine Hard Starting
This symptom will occur especially if your car uses a single coil. If the coil has a malfunction, it means the engine will be cranking without spark inside all cylinders.
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  • Urus
  • Huracan
  • Aventador
  • Gallardo
  • Murcielago
  • Diablo
  • LM002
  • Jalpa/Silh.
  • Countach
  • URRACO
  • JARAMA
  • ISLERO
  • Espada
  • MIURA
  • 350 400 GT