How To Replace Ignition Coils 2003-09 Toyota 4Runner

1. step 1 :Removing the Passenger Side Ignition Coils 0:21

   • Remove the two 10 mm nuts to remove the engine cover
   • Release the two air filter box latches, remove the air box cover and set it aside
   • Disconnect the ignition coil electrical connector
   • Remove the 10 mm bolt securing the ignition coil
   • Pull the ignition coil straight out

2. step 2 :Installing the Passenger Side Ignition Coils 4:12

   • Apply dielectric grease to the ignition coil socket and electrical connector
   • Insert the ignition coil into the spark plug well
   • Secure the ignition coil with the 10 mm bolt
   • Reconnect the ignition coil electrical connector
   • Repeat for the remaining passenger side spark plugs
   • Insert the rear tabs of the air box cover into the air box, and close the cover
   • Secure the air box cover with the two latches

3. step 3 :Replacing the Driver Side Ignition Coils 6:15

   • There are several obstructions to remove on the driver side for easier access
   • Remove the hoses from the retaining brackets to access the middle spark plug
   • Remove the two 12 mm bolts to remove the support bar to access the rear spark plug
   • Repeat the same removal and installation process as the passenger side spark plugs
   • Reinstall the support bar with the 12 mm bolts
   • Reinstall the hoses into the retaining brackets
   • Install the engine cover by setting the rear tabs in position, and securing it with the two 10 mm bolts

Tools needed

• Socket Extensions

  Torque Wrench

  5/8 Inch Spark Plug Socket

  Ratchet

  Pocket Screwdriver