🔧 Soul - Ignition Coil Replacement

Your Soul uses coil-on-plug ignition coils (one coil per cylinder) mounted on top of the engine. Replacing a bad coil can fix misfires, rough idle, flashing check engine light, and loss of power.

Difficulty Level: Beginner | Estimated Time: 0.5-1.0 hours

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⚠️ Safety & Precautions

• ⚠️ Let the engine cool before working near the exhaust/engine.
• ⚠️ Keep the key away from the car so it can’t be started accidentally.
• ⚠️ Don’t pull on wiring; unplug connectors by the release tab.
• ⚠️ If you disconnect the battery, you may reset radio presets.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 1/4" drive ratchet
• 6" extension (1/4" drive)
• Torque wrench (inch-pound)
• Small flathead screwdriver
• Needle-nose pliers
• Shop towel
• Nitrile gloves
• Safety glasses
• OBD2 scan tool

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Ignition coil - Qty: 1 (or Qty: 4 if replacing all)
• Dielectric grease - Qty: 1

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Open the hood and let the engine cool.
• If you’ve had a misfire: use an OBD2 scan tool to note which cylinder is misfiring (example: P0302 = cylinder 2).
• Optional: disconnect the negative battery terminal using a 10mm socket.

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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 firmly to release the rubber grommets.
• If your cover uses fasteners, remove them with a 10mm socket.

Step 2: Locate the ignition coils

• The coils are on top of the valve cover, lined up in a row (one per cylinder).
• Wipe dirt away with a shop towel so nothing falls into the spark plug holes.

Step 3: Unplug the coil electrical connector

• Press the connector release tab and pull the connector straight off.
• If the tab is stubborn, gently help it with a small flathead screwdriver (don’t break the tab).
• Wiggle the plug—don’t yank the wires.

Step 4: Remove the coil hold-down bolt

• Remove the coil bolt using a 10mm socket, 1/4" ratchet, and 6" extension.
• Set the bolt aside where it can’t fall into the engine bay.

Step 5: Remove the ignition coil

• Twist the coil slightly left/right to break the seal, then pull straight up.
• If it’s stuck, use steady upward force—don’t pry hard on the valve cover.

Step 6: Prep the new coil

• Compare the new coil to the old coil (same shape/connector).
• Apply a tiny smear of dielectric grease inside the rubber boot. (Dielectric grease is a non-conductive grease that helps prevent moisture and makes future removal easier.)
• Use a pea-sized amount—don’t pack it.

Step 7: Install the new coil

• Push the coil straight down until it seats fully on the spark plug.
• Install the hold-down bolt by hand first (prevents cross-threading).
• Tighten using a torque wrench (inch-pound): Torque to 7–9 Nm (62–80 in-lbs).

Step 8: Reconnect the electrical connector

• Push the connector on until it clicks.
• Lightly tug to confirm it’s locked.

Step 9: Reinstall the engine cover

• Press the cover back onto the grommets.
• If bolts were used, tighten with a 10mm socket snug (do not overtighten).

Step 10: Clear codes (if present)

• Use an OBD2 scan tool to clear stored misfire codes.
• If you don’t clear them, the light may turn off after several good drive cycles, but clearing helps confirm the fix.

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✅ After Repair

• Start the engine and let it idle for 1–2 minutes. It should be smooth (no shaking).
• Road test for 10–15 minutes with gentle to moderate acceleration.
• Re-scan with your OBD2 scan tool to confirm no misfire codes returned.
• If the check engine light is flashing, stop driving and re-check coil connectors and seating.

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💰 DIY vs Shop Cost

Shop Cost: $180-$450 (parts + labor)

DIY Cost: $40-$320 (parts only, depending on replacing 1 vs all 4)

You Save: $100-$250+ by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1.0 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.