Ford Explorer Ignition Coil Guide (2012-2023): Symptoms, Brands & Replacement
Experiencing engine misfires or a rough idle in your Explorer? A failing ignition coil is a likely culprit.
- A flashing check engine light is serious; it means stop driving to prevent catalytic converter damage.
- On V6 engines, replacing the rear three coils is more difficult and costly as it requires removing the intake manifold.
- Always replace spark plugs when you replace ignition coils to ensure a complete and lasting repair.
- Denso is widely considered the OEM manufacturer for Motorcraft coils and is a high-quality aftermarket choice.
Is Your Explorer Shaking, Stalling, or Losing Power?
A bad ignition coil is one of the most common reasons for engine problems in the 2012-2023 Ford Explorer. When a coil starts to fail, the spark plug for that cylinder can't fire correctly. This leads to an engine "misfire," which feels like a stumble, shake, or hesitation, especially when you accelerate. You might notice it most when the engine is under load, like going up a hill or passing another car. Turbocharged EcoBoost engines, in particular, can be hard on ignition coils.
Flashing Check Engine Light? Pull Over Safely.
If your check engine light is flashing, it signals a severe misfire. This means unburned fuel could be getting into your exhaust system, which can quickly destroy your expensive catalytic converters. If you see a flashing light, reduce your speed, avoid heavy acceleration, and get the vehicle inspected as soon as possible.
Choosing the Right Aftermarket Ignition Coil
When replacing ignition coils, you have a choice between Original Equipment (OEM) from Motorcraft and various aftermarket brands. While OEM parts are a safe bet, high-quality aftermarket coils can offer similar performance, sometimes at a better price. Forum discussions and mechanic recommendations often point out that Denso is the original manufacturer for many Motorcraft coils.
Brand Quality Tiers for Ford Explorer
- OEM-Equivalent Quality: Brands like Denso and NGK are widely trusted and often considered OEM suppliers. They are engineered to meet or exceed Ford's original specifications for performance and durability. Choosing one of these is a reliable option for a long-lasting repair.
- Performance Brands: Brands such as MSD and Accel are known for high-performance applications. They may offer slightly more voltage than stock coils, which can be beneficial for modified engines but are generally not necessary for a daily-driven Explorer.
- Standard Aftermarket: Brands like Hella, Karlyn STI, and Prenco offer a balance of quality and value. It is always best to choose a brand with a good reputation and warranty.
Pro Tip: Replace Coils and Plugs Together
Most mechanics recommend replacing the spark plugs at the same time as the ignition coils. Worn spark plugs can put extra strain on the new coils, causing them to fail prematurely. Since accessing the coils often requires removing the same components needed to reach the plugs, doing both jobs at once saves on labor time and cost.
Known Issues, TSBs, or Recalls
Searches for the 2012-2023 Ford Explorer did not reveal any specific recalls for ignition coils from the National Highway Traffic Safety Administration (NHTSA). However, Ford has issued Technical Service Bulletins (TSBs) related to diagnosing misfires, such as TSB 05-22-8, which provides procedures for testing coil-on-plug systems. There are also numerous TSBs for related powertrain issues that could present similar symptoms, but none directly recall the ignition coils themselves. Owners on forums have reported recurring misfire codes (like P0356) even after replacing a coil, which can sometimes point to wiring issues or problems with the Powertrain Control Module (PCM).
Cost to Replace Ford Explorer Ignition Coils
The cost can vary depending on your Explorer's engine and whether you do the job yourself. On V6 models (like the 3.5L), the three rear coils are under the intake manifold, making them harder to access and increasing labor time. The coils on 4-cylinder engines (like the 2.3L EcoBoost) are generally easier to access.
🎬 Watch: Step-by-step coil and plug replacement for 2.3L engines| Part / Service | Estimated Cost |
|---|---|
| New Aftermarket Ignition Coil (Single) | $39.77 - $570.82 |
| New OEM Ignition Coil (Single) | $112 - $155 |
| Shop Labor (per coil, front bank) | $43 - $63 |
| Shop Labor (all coils, V6 models) | $200 - $400+ (due to intake manifold removal) |
Frequently Asked Questions (FAQ)
Can I replace just one bad ignition coil?
Yes, you can replace only the failing coil. However, ignition coils are often exposed to the same conditions and wear at a similar rate. If one has failed, others may soon follow. For this reason, many mechanics recommend replacing all of them at once, especially if they are original and the vehicle has high mileage.
How do I know which cylinder is misfiring?
When the check engine light comes on, a code is stored in the vehicle's computer. You can use an OBD-II scanner to read these codes. Codes P0301 through P0306 correspond 🎬 See how to diagnose and fix a cylinder 2 misfire to the misfiring cylinder (e.g., P0301 is cylinder 1, P0306 is cylinder 6). A P0300 code indicates a random or multiple-cylinder misfire.
Is it difficult to replace the ignition coils on my Explorer?
It depends on the engine. For the 2.3L 4-cylinder, the coils are on top of the engine and easy to access. For the 3.5L V6, the front three coils are also easy, but the rear three are located under the upper intake plenum, which must be removed. 🎬 Watch: A 3.5L EcoBoost ignition coil replacement walkthrough While this is a DIY-feasible job for someone with mechanical experience, it is more involved.
What is the difference between a regular 3.5L V6 and the 3.5L EcoBoost coil replacement?
The replacement process is similar for both engines, as the rear coils are difficult to access. However, turbocharged EcoBoost engines tend to be harder on ignition components due to higher cylinder pressures and heat. It's crucial to use high-quality parts and ensure spark plugs are gapped correctly for these engines.
Helpful Videos
Technical Specifications
OEM Part Numbers: DG549 DG511
Coil-on-plug design. Voltage output varies by brand but is designed to meet or exceed OEM requirements. Connectors and boot shapes are specific to engine type (e.g., 3.5L V6, 2.3L EcoBoost).
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Ford Explorer:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Explorer Shaking, Stalling, or Losing Power?
- Flashing Check Engine Light? Pull Over Safely.
- Choosing the Right Aftermarket Ignition Coil
- Brand Quality Tiers for Ford Explorer
- Pro Tip: Replace Coils and Plugs Together
- Known Issues, TSBs, or Recalls
- Cost to Replace Ford Explorer Ignition Coils
- Frequently Asked Questions (FAQ)
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