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The ignition coil in a Ford Expedition is designed to transform the low voltage from the battery into the high voltage necessary to ignite the air-fuel mixture inside the combustion chamber.
This process ensures smooth engine starts, consistent acceleration, and efficient fuel consumption.
Without a reliable ignition coil, the Ford Expedition may experience misfires, rough idling, or reduced overall performance.
A faulty ignition coil can trigger a range of engine problems.
Typical warning signs include engine misfires, poor fuel efficiency, reduced power during acceleration, and difficulty starting the SUV.
In many cases, the "Check Engine Light" will also illuminate, indicating ignition system issues linked to coil failure.
Under normal driving conditions, an ignition coil in the Ford Expedition can last between 80,000 and 100,000 miles.
However, factors such as extreme driving conditions, lack of maintenance, or worn spark plugs can shorten its lifespan.
Routine inspection and timely replacement are essential to avoid costly engine repairs.
It is possible to replace only the faulty ignition coil, but many technicians recommend replacing all coils at the same time.
Because coils often fail close together, replacing them as a set ensures balanced performance and prevents repeated service visits.
This approach is especially beneficial for high-mileage Ford Expedition models.
The Ford Expedition generally uses coil-on-plug ignition systems, where each spark plug has its own dedicated coil.
Common OE numbers include DG511, UF540, C1719, and 5C1411, depending on the model year and engine type.
For example:
- 2005–2008 Ford Expedition: DG511 / UF540 ignition coils
- 2009–2014 Ford Expedition: C1719 ignition coils
- 2015+ Ford Expedition: updated OE-style EcoBoost ignition coils
Always confirm the OE reference before ordering to ensure compatibility with your SUV.
Yes, driving with a failing ignition coil can harm the engine and exhaust system of the Ford Expedition.
Continuous misfires may send unburned fuel into the catalytic converter, leading to overheating and expensive repairs.
It may also damage spark plugs and cause uneven cylinder performance if not replaced promptly.
The cost of replacing a Ford Expedition ignition coil depends on the part and labor charges.
Individual ignition coils typically range from $60 to $120, while professional labor costs may add $100 to $150.
Replacing all ignition coils at once increases upfront expense but can save money over time by reducing repeated repairs.
Yes, ignition coil replacement is considered a moderate-level DIY task for experienced car owners.
The process involves disconnecting the battery, removing the ignition coil from the spark plug, and installing a new one.
Always ensure the replacement coil matches the OE specifications for the correct model year to guarantee safe and reliable performance.
High-quality aftermarket ignition coils can provide excellent performance and durability when sourced from trusted manufacturers.
They are often cost-effective alternatives to OEM parts, delivering strong voltage output and heat resistance.
For best results, always confirm aftermarket coils match the OE numbers, such as DG511 or C1719, for your Ford Expedition.
