Ford F5FZ-12029-A Coil Assembly - Ignition

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To remove the coil on non-supercharged models, start by disconnecting the cable from the negative terminal of the battery. Then, detach the electrical connectors from the coil, which is located near the air cleaner assembly. Next, remove the bolts that mount the coil bracket to the fender and remove the coil and bracket. Finally, remove the coil-to-bracket mounting bolts. For installation, simply reverse the removal steps. For coil pack removal on supercharged models, begin by disconnecting the cable from the negative terminal of the battery. Then, disconnect the electrical connector from the coil pack and remove the spark plug wires by squeezing the locking tabs to release the boot retainers. Next, remove the screws that mount the coil pack and remove the pack. To reinstall, follow the reverse of the removal steps.

For breaker points type ignition systems, start by marking the wires and terminals with numbered tape. Then, remove the primary wires and high-tension wire from the coil. Take out the coil assembly and clean the outer case, checking for cracks or damage. Inspect the coil primary terminals and the coil tower terminal for corrosion, cleaning with a wire brush if necessary. Use an ohmmeter to check the coil primary resistance and compare it to the specifications. Do the same for the coil secondary resistance. If the resistances are not as specified, replace the coil. Keep all coil terminals and wire leads clean, tight, and dry. Install the coil back in its mount and reconnect the wires. For breakerless type ignition systems, check the primary and secondary coil resistance. Disconnect the wires from the coil and use an ohmmeter to measure the resistance across the coil primary terminals. The resistance should match the specifications. Then, connect the ohmmeter between the negative primary terminal and the secondary terminal and check the resistance. If the resistances are not as specified, replace the coil. Measure the resistance from the positive primary terminal to the case of the ignition coil. If the resistance is less than specified, replace the coil. Reconnect the ignition coil wires. For electronic distributorless ignition (EDIS) systems, start by disconnecting the electrical connector(s) from the coil. Use an ohmmeter to check the resistance between the coil primary terminal and the outer terminal. The resistance should match the specifications. Then, connect the ohmmeter between the secondary terminals of each coil pack and check the resistance. If the resistances are not as specified, replace the coil. To replace the coil, disconnect the negative cable from the battery and disconnect the ignition coil electrical connector(s) from each individual coil pack. Disconnect the ignition wires and remove the bolts securing the ignition coil to the mounting bracket. Install the new coil, making sure to coat the interior of the rubber boot with silicone dielectric compound and properly insert each spark plug wire into the corresponding terminal.

To remove the coil on non-supercharged models, start by disconnecting the cable from the negative terminal of the battery. Then, detach the electrical connectors from the coil, which is located near the air cleaner assembly. Next, remove the bolts that mount the coil bracket to the fender and remove the coil and bracket. Finally, remove the coil-to-bracket mounting bolts. For installation, simply reverse the removal steps. For coil pack removal on supercharged models, begin by disconnecting the cable from the negative terminal of the battery. Then, disconnect the electrical connector from the coil pack and remove the spark plug wires by squeezing the locking tabs to release the boot retainers. Next, remove the screws that mount the coil pack and remove the pack. To reinstall, follow the reverse of the removal steps.

When it has been determined that a coil needs replacement in the COP system, unplug the coil, remove the retaining bolt, and remove the coil.

Start by marking the wires and terminals with numbered tape. Then, remove the primary wires and high-tension wire from the coil. Take out the coil assembly and clean the outer case, checking for cracks or damage. Inspect the coil primary terminals and the coil tower terminal for corrosion, cleaning with a wire brush if necessary.