How to Replace Ignition Coils 02-06 2.5L Nissan Altima
Difficulty: Beginner · About 2 min · Nissan Altima
Replace the ignition coils on a 2002–2006 Nissan Altima 2.5L by disconnecting each connector and securing the coil, then checking idle and warning lights.
Tools you will need
- 5mm Hex Wrench
- 10mm Socket
- Ratchet
Parts and supplies
- Compatible ignition coil or coils
Steps
Remove the engine cover
Switch the ignition off and allow the engine to cool. Remove the cover fasteners and lift the cover away to expose the ignition coils.
Remove the old coil
Release the electrical connector lock and unplug the coil. Remove its retaining bolt, then pull the coil straight out of the spark-plug well.
Install the replacement coil
Seat the replacement coil fully in the well and align its mounting tab. Install the retaining bolt to specification and reconnect the plug until its lock clicks.
Refit and verify
Reinstall the engine cover and its fasteners. Start the engine and check for a smooth idle and warning lights; shut it off if a misfire remains.
Check your vehicle’s repair manual for exact specifications and fit.