How to Replace the Ignition Coil in a Toyota Tundra

Problems with your Tundra ignition coil interfere with the ability of your ignition system to perform. Symptoms include oil leaks, irregular or fast idle, failure to start or engine stalls. When it works correctly, the ignition coil creates combustion by boosting the low-voltage power from the battery into the high voltage needed to trigger the spark plugs.

Instructions

1

Detach the ground battery cable from the battery. To do this, remove the cable that attaches to the negative battery terminal post. For additional safety, set your emergency or parking brake.

2

Lift the hood and locate the ignition coil. You should find this near the intake manifold. On some models, you may need to remove air cleaner hose and detach the high-tension cables.

3

Use a ratchet and socket set or a small wrench to disconnect the retainers that secure the ignition coil.

4

Remove the damaged ignition coil. You should be able to pull on it. If you have trouble getting the seal to break, slightly twist the ignition coil as you pull.

5

Position the new Tundra ignition coil and press it in place. You may want to glide the boot of the ignition coil onto the cylinder head to prevent a tear in the boot.

6

Tighten the connectors, replace any other components you removed and reconnect the battery. If you have a torque wrench, tighten the mounting bolts to 84 inch pounds (10 Nm).