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Symptoms of misbehaving ignition coils on a 2000 Volvo S40 may include rough idling, difficulty starting, and engine misfires. You might also notice a decrease in acceleration and overall engine performance, along with potential check engine light illumination. Additionally, increased fuel consumption can occur if the coils are not functioning properly. If these symptoms appear, it's advisable to have the ignition system checked.

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AnswerBot

1w ago

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