How to Replace Coils 06-17 Nissan Altima
Difficulty: Beginner · About 35 min · Nissan Altima
Replace the four ignition coils on a 2006–2017 Nissan Altima by removing the engine cover, disconnecting each coil, and reinstalling the parts with their connectors secured.
Tools you will need
- 5mm hex wrench
- 10mm socket and ratchet
- Small flat blade screwdriver
Parts and supplies
- Ignition coils
Steps
- Remove the engine cover
Use a 5mm hex tool to remove the three cover fasteners. Lift the cover away without forcing it; check that all fasteners are free before setting it aside.
- Disconnect the coil wiring
Press each connector's locking tab and pull the plug straight off its ignition coil. If a tab is difficult to release, gently assist it with a small screwdriver without damaging the wiring.
- Remove the coil fasteners
Take out the 10mm retaining bolt from each coil. Keep the bolts together and note which cylinder each coil came from in case you need to compare the old parts.
- Lift out and inspect the coils
Wiggle each coil gently to free it from its spark plug tube, then pull it straight up. Check the boots and seals for cracks or swelling and inspect the electrical contacts for corrosion.
- Seat the replacement coils
Align each replacement coil over its spark plug tube and press it down until fully seated. Start the retaining bolts by hand, then tighten them snugly to the vehicle's specification.
- Reconnect wiring and refit the cover
Push each electrical connector onto its coil until the lock engages. Position the engine cover, align its holes, and reinstall the three 5mm fasteners without overtightening the plastic cover.
Check your vehicle’s repair manual for exact specifications and fit.