A coil pack is a collection of coils that send a high-voltage charge to a vehicle's battery to spark the engine to start. If it is faulty, a vehicle will have power and acceleration problems.
A coil pack consists of thin thread-like wires wrapped around a core unit. It is generally located on top of or underneath an engine's dust cover.
The main function of a coil pack is to increase a vehicle's electrical volt power to 35,000 or more volts. The high-voltage sets fire to the spark plug, causing fuel in the cylinder to ignite. This process initiates the start of a vehicle.
If a coil pack is faulty, a vehicle may consistently lose power and shut down abruptly. Once the coil pack completely loses its voltage power, the vehicle will not start. Also, the vehicle will often idle poorly and have acceleration problems.
