🔧 Passport - Ignition Coil Replacement

Ignition coils sit on top of the spark plugs and create the high-voltage spark your Passport needs to run smoothly. Replacing a bad coil can fix misfires, rough idle, flashing check-engine light, and loss of power.

Difficulty Level: Intermediate | Estimated Time: 1.0-2.5 hours

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⚠️ Safety & Precautions

• ⚠️ Let the engine cool fully before starting (hot parts burn fast).
• ⚠️ Disconnect the negative battery cable to prevent accidental shorts.
• ⚠️ If the check-engine light is flashing, avoid driving until repaired (can damage the catalytic converters).
• ⚠️ Keep dirt out of spark plug holes—blow debris away before removing coils.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• 10mm socket
• 1/4" ratchet
• 3/8" ratchet
• 3" extension
• 6" extension
• Torque wrench (5–30 Nm range)
• Flat-blade screwdriver
• Trim clip removal tool
• Needle-nose pliers
• Compressed air blow gun
• Shop rags
• OBD2 scan tool

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Ignition coil - Qty: 1-6
• Dielectric grease (spark plug boot grease) - Qty: 1
• Upper intake manifold gasket set - Qty: 1 (only if upper intake is removed)

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📋 Before You Begin

• 🅿️ Park on level ground, shift to Park, and set the parking brake.
• 🔋 Use a 10mm socket to disconnect the negative battery cable and isolate it so it can’t spring back.
• 🧭 Decide your scope: are you replacing one coil or all coils? If you tell me which cylinder is misfiring (like P0302), I can point you to the exact coil location.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the engine cover (if equipped)

• Remove the cover using a trim clip removal tool (some covers pull upward from rubber grommets).
• Set it aside on a clean surface.

Step 2: Remove the air intake ducting for access

• Loosen hose clamps using a flat-blade screwdriver.
• Release any clips using a trim clip removal tool.
• Lift the intake duct out and place it aside.
• Take a quick photo before removing hoses.

Step 3: (If needed) Gain access to the rear bank coils

• If you can clearly reach the rear coils, skip to Step 4.
• If access is too tight, you may need to remove the upper intake manifold.
• Label and disconnect vacuum/PCV/EVAP hoses using needle-nose pliers as needed.
• Remove the upper intake manifold fasteners using a 10mm socket with a 3/8" ratchet and extensions.
• Lift the upper intake manifold off and cover openings with shop rags to keep debris out.
• Replace the gasket(s) during reassembly.

Step 4: Unplug the ignition coil connector

• Press the connector lock tab and pull the connector straight off by hand.
• If it’s stubborn, gently help the tab with a flat-blade screwdriver (don’t pry hard).

Step 5: Remove the ignition coil retaining bolt

• Use a 10mm socket with a 1/4" ratchet to remove the coil bolt.
• Set the bolt aside so it doesn’t get lost.

Step 6: Remove the ignition coil

• Before pulling the coil out, blow debris away from the coil/spark plug area using a compressed air blow gun.
• Twist the coil boot slightly, then pull the coil straight up and out by hand.

Step 7: Install the new ignition coil

• Put a small dab of dielectric grease inside the new coil boot (a thin smear is enough).
• Push the coil straight down until it fully seats on the spark plug.
• Install the retaining bolt by hand first (to avoid cross-threading).
• Tighten the bolt with a torque wrench: Torque to 12 Nm (9 ft-lbs).
• Reconnect the coil connector until it clicks.

Step 8: Repeat for any other coils being replaced

• Move to the next coil and repeat Steps 4–7.
• Replace coils in matched pairs if possible.

Step 9: Reassemble the intake components

• Reinstall the upper intake manifold (if removed) using a 10mm socket and extensions.
• Use a torque wrench to tighten the manifold fasteners evenly in stages (crisscross pattern).
• Reconnect all hoses and clamps using needle-nose pliers and a flat-blade screwdriver.
• Reinstall the intake ducting and engine cover.

Step 10: Reconnect battery and clear/check codes

• Reconnect the negative battery cable using a 10mm socket.
• Use an OBD2 scan tool to clear codes and confirm the misfire does not return.

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✅ After Repair

• ✅ Start the engine and let it idle for 2–3 minutes; it should run smooth with no shaking.
• ✅ Road test for 10–15 minutes; verify no flashing check-engine light.
• ✅ Re-scan with your OBD2 scan tool; confirm misfire counters stay at 0.
• ✅ Recheck that every coil connector is fully clicked in place.

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💰 DIY vs Shop Cost

Shop Cost: $250-$650 (parts + labor, depending on how many coils and rear-bank access)

DIY Cost: $45-$420 (parts only, depending on 1 coil vs all 6)

You Save: $150-$350 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.0-2.5 hours.

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🎯 Ready to get started?

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