How does a faulty ignition coil affect the performance of the Toyota Prius?

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How does a faulty ignition coil affect the performance of the Toyota Prius?

Since the ignition coil provides high voltage to the spark plugs, a weak o r failing coil can cause incomplete combustion, leading to hesitation during acceleration, reduced fuel economy, and difficulty starting the engine.

Zarnish asked on 13 Feb 2025 16:02:38 pm

1 Answer

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Car Mechanic Expert - on 13 Feb 2025 16:25:21 pm

The ignition coil plays a critical role in creating the spark necessary for engine combustion:

Incomplete Combustion: A weak o r failing ignition coil can cause the spark plugs to fire weakly o r intermittently. This leads to incomplete combustion, causing poor engine performance, hesitation during acceleration, and difficulty starting the engine.
Reduced Fuel Economy: Since combustion is inefficient, the engine may consume more fuel than necessary.
Hard Starting: The engine may struggle to start if the ignition coil is not providing a consistent spark.

These performance issues can worsen over time if the ignition coil is not replaced promptly.