How to Replace Ignition Coil
Learn how to replace ignition coil with our detailed step-by-step guide. Follow our easy instructions to get it done right.
Your Progress
0 of 6 steps completedStep-by-Step Instructions
1 Step 1: Diagnose Faulty Ignition Coil
Step 1: Diagnose Faulty Ignition Coil
Check for misfire codes (P0300-P0308), rough idle, or poor acceleration pointing to bad coil.
OBD2 Scanner
Code reader for identifying which cylinder is misfiring
2 Step 2: Locate and Access Ignition Coil
Step 2: Locate and Access Ignition Coil
Find coil pack on engine (may need to remove engine cover or air intake components).
Automotive Repair Manual
Vehicle-specific manual with coil location diagrams
3 Step 3: Disconnect Electrical Connector
Step 3: Disconnect Electrical Connector
Press tab and pull connector off coil pack carefully without damaging clip.
4 Step 4: Remove Mounting Bolt and Coil
Step 4: Remove Mounting Bolt and Coil
Unbolt coil (usually single 10mm bolt), twist and pull coil straight out from spark plug.
Socket and Ratchet Set
Tools for removing ignition coil mounting bolts
5 Step 5: Install New Ignition Coil
Step 5: Install New Ignition Coil
Apply dielectric grease to boot, push new coil onto spark plug, bolt down, reconnect electrical.
Ignition Coil Pack
Replacement coil for your vehicle engine
Dielectric Grease
Protective grease for coil boot and spark plug connection
6 Step 6: Clear Codes and Test Drive
Step 6: Clear Codes and Test Drive
Use scanner to clear fault codes, start engine and test drive to verify misfire is resolved.