My 2005 Ford Fairmont is misfiring
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Asked by Brian
My 2005 Ford BA Fairmont is misfiring under load only.
Answered by CarsGuide
14 Feb 2024A misfire under load is often suggestive of an ignition or fuelling fault. You can check the performance of the fuel pump to see that it's delivering the volume of fuel it should, but don't ignore things like dirty fuel filters as a cause of poor fuel delivery.
That said, this engine is particularly susceptible to failures of the ignition coils. In fact, most mechanics who know their way around this engine will suspect faulty coils before anything else. It's not a terribly expensive fix even though there is a separate coil for each cylinder, but nine times out of ten, this will be the problem in a misfiring Falcon or Fairmont. The other piece of advice is to ensure you only use the genuine Ford ignition coils rather than a cheaper, knock-off coil.
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