🔧 Edge - Ignition Coil Replacement

Your Edge uses one ignition coil per cylinder (4 total). Replacing a bad coil can fix misfires, rough idle, and flashing check-engine lights by restoring strong spark to the spark plugs.

Difficulty Level: Beginner | Estimated Time: 0.5-1.5 hours

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⚠️ Safety & Precautions

• 🔸 Let the engine cool fully—coils sit on a hot valve cover/turbo area.
• 🔸 Keep the key far from the vehicle while working to prevent accidental power-up.
• 🔸 Disconnect the battery negative terminal if you’re not comfortable working around live electrical connectors.
• 🔸 Don’t pull on the wiring—release the connector lock and pull the plug body.

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🔧 Required Tools

You'll need the following tools for this repair:

• 8mm socket
• 1/4" drive ratchet
• 6" extension (1/4" drive)
• Torque wrench (in-lb)
• Small flathead screwdriver
• Trim clip tool
• Needle-nose pliers
• Shop flashlight
• Nitrile gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Ignition coil - Replace in pairs or all four (recommended) - Qty: 4
• Dielectric grease - Qty: 1

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📋 Before You Begin

• Park on level ground, shift to Park, and set the parking brake.
• Open the hood and let the engine cool.
• If disconnecting the battery: use a 10mm socket to remove the negative terminal and move it aside so it can’t spring back. (If you do this, add a 10mm socket to your tools.)

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the engine cover (if equipped)

• Grip the cover and pull upward to release the rubber grommets.
• Use a shop flashlight to check for any hoses or wiring that could snag.

Step 2: Access the ignition coils

• If the intake ducting blocks access, loosen/remove only what’s necessary using a trim clip tool and needle-nose pliers for any clips.
• Take a quick photo before removing anything.

Step 3: Disconnect the coil electrical connector

• Use a small flathead screwdriver to gently lift/release the connector lock (a small locking tab).
• Pull the connector straight off by hand (do not pull on wires).

Step 4: Remove the ignition coil retaining bolt

• Use an 8mm socket, 1/4" drive ratchet, and 6" extension to remove the bolt holding the coil down.
• Set the bolt aside where it can’t fall into the engine bay.

Step 5: Remove the ignition coil

• Twist the coil gently left-right to break the seal, then pull straight up.
• If it feels stuck, keep twisting—don’t pry hard on the valve cover.

Step 6: Install the new ignition coil

• Apply a pea-sized amount of dielectric grease inside the coil boot (the rubber “cup” that goes over the spark plug). Dielectric grease helps prevent moisture and makes future removal easier.
• Push the coil straight down until it fully seats on the spark plug.

Step 7: Reinstall and torque the retaining bolt

• Thread the bolt in by hand first to avoid cross-threading.
• Use a torque wrench (in-lb) and 8mm socket: Torque to 62 in-lb (7 Nm).

Step 8: Reconnect the electrical connector

• Push the connector on until it clicks/locks.
• Lightly tug to confirm it’s secure.

Step 9: Repeat for the remaining coils

• Replace one coil at a time to avoid mixing up connectors.
• Keep old coils in order for troubleshooting.

Step 10: Reassemble and reinstall the engine cover

• Reinstall any intake pieces/clips you moved using needle-nose pliers and the trim clip tool.
• Press the engine cover back onto its grommets until fully seated.

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✅ After Repair

• Start the engine and let it idle for 1-2 minutes. It should run smooth.
• If you had a flashing check-engine light/misfire, drive gently and re-check. If the light returns, a scan for codes is the next step (could be spark plugs or a wiring issue).
• Listen for hissing (intake hose left loose) and re-check any clamps/clips you moved.

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💰 DIY vs Shop Cost

Shop Cost: $250-$600 (parts + labor)

DIY Cost: $120-$400 (parts only)

You Save: $130-$200+ by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.7-1.2 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.