🔧 Versa - Ignition Coil Replacement

Your Versa uses one ignition coil per cylinder (4 total). Replacing a bad coil restores smooth running, fixes misfires, and can turn off a flashing/steady check-engine light caused by misfire codes.

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

Assumption: 1.6L engine coil-on-plug layout (common on your Versa).

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⚠️ Safety & Precautions

• ⚠️ Let the engine cool completely before working near the valve cover.
• ⚠️ Disconnect the negative battery terminal to prevent accidental shorts.
• ⚠️ Don’t pull on wiring; always press the connector lock tab first.
• ⚠️ Keep dirt out of spark plug wells (the deep holes under the coils).

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 3/8" ratchet
• 3" socket extension
• Torque wrench (5-25 Nm range)
• Flat trim tool
• Small pick tool
• Needle-nose pliers
• Shop towels
• Flashlight
• Nitrile gloves
• Safety glasses

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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.
• Use a 10mm socket to disconnect the negative battery terminal and move it aside so it can’t spring back.
• Pro tip: Take a quick photo of the layout first.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the engine cover (if equipped)

• Use a flat trim tool to gently pop up any plastic retainers (if present).
• Lift the cover straight up and set it aside.

Step 2: Make room to access the coils

• If the air intake duct blocks access, loosen the hose clamp(s) using a 10mm socket or flat trim tool (depending on clamp style).
• Wiggle the duct off and move it aside without forcing it.

Step 3: Unplug the ignition coil connector

• At the coil connector, press the lock tab and pull the connector straight off.
• If it’s stuck, use a small pick tool to gently lift the tab while you pull.
• Pro tip: Never pry on the wires.

Step 4: Remove the ignition coil bolt

• Use a 10mm socket, 3/8" ratchet, and 3" socket extension to remove the coil hold-down bolt.
• Set the bolt somewhere safe so it doesn’t fall into the engine bay.

Step 5: Remove the ignition coil

• Twist the coil slightly left-right to break the seal, then pull it straight up and out.
• Wipe any dirt around the spark plug well with shop towels before installing the new coil.

Step 6: Install the new ignition coil

• Put a tiny smear of dielectric grease inside the rubber boot of the new coil.
• Push the coil straight down until it fully seats on the spark plug.
• Install the hold-down bolt by hand first to avoid cross-threading.
• Use a torque wrench (5-25 Nm range) to tighten the coil bolt: Torque to 9 Nm (80 in-lbs).

Step 7: Reconnect the electrical connector

• Push the connector onto the coil until you feel/hear it click.
• Gently tug it to confirm it’s locked.

Step 8: Repeat for remaining cylinders (if replacing more than one)

• Work one coil at a time so nothing gets mixed up.

Step 9: Reinstall intake duct and engine cover

• Reinstall the intake duct and tighten clamps using a 10mm socket.
• Reinstall the engine cover and any retainers using a flat trim tool.

Step 10: Reconnect the battery

• Reconnect the negative battery terminal using a 10mm socket and snug it securely.

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✅ After Repair

• Start the engine and let it idle for 1-2 minutes. It should run smooth with no shaking.
• Check for a check-engine light. If it stays on, the code may need to be cleared after the fix.
• Do a short test drive and confirm there’s no hesitation on acceleration.
• If you had a flashing check-engine light before, stop driving immediately if it returns (active misfire can damage the catalytic converter).

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💰 DIY vs Shop Cost

Shop Cost: $180-$450 (parts + labor, depending on how many coils)

DIY Cost: $40-$320 (parts only, depending on how many coils)

You Save: $100-$200+ 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.