Ignition coils are a part of your Toyota Passo's ignition system and connect physically or sit atop your Passo's spark plug. They are also called compact electrical transformers and help convert the 12-volt current in car batteries to a higher voltage necessary to ignite the fuel and start the engine. While some ignition systems of older vehicles use just one coil for all cylinders, the norm for newer models is one coil for each cylinder.

The following signs could be indicators of a faulty ignition coil:

1. Poorer fuel efficiency than usual.
2. Illuminated "check engine" light, possibly caused by faulty coils that trip the engine computer.
3. Your Toyota Passo refuses or is hard to start, especially in one where one coil is used for all cylinders since this would fail to provide the engine with any spark.
4. Rough idling and engine jerking.
5. Backfiring that occurs when unspent fuel in the combustion cylinders leaves through the exhaust pipe.

At BE FORWARD Auto Parts, we stock ignition coils for Coil-On-Plug (coils that sit on top of the spark plug) and Coil-Near-Plug (those connected by wire) used in Passo engines across the years. You can find a replacement Ignition coil for your Passo in good condition and at a competitive price here at BE FORWARD Auto Parts.