Ford 4L7Z-12029-AB
Ignition Coil

The first step for servicing the ignition coil-on-plug and spark plug requires users to disconnect the negative battery cable and remove the engine appearance cover. Proceed with removing components using the provided sequence and reference the particular instructions for each component. To install reverse the disassembly process and use silicone dielectric compound inside the ignition coil boots before attaching them.

The service and repair process for the ignition coil starts with removing its bolts followed by the ignition coil cover. First remove the ignition coils by taking off their electrical connector and bolts. A backward sequence of the removal steps will result in installation of the ignition coils following their removal.

The battery ground cable needs disconnection as the first step to service the ignition coil. To start remove the air cleaner outlet tube followed by the right-hand (RH) spark plug cover by unscrewing its bolts so you can pull the ignition coil off the spark plugs while disconnecting the connectors to remove the ignition coil fully. After disconnecting the connectors from the left-hand (LH) ignition coil you should remove its bolts before pulling the ignition coil from the spark plugs. Inspection of both removed ignition coils should be conducted for evidence of damage including cracks and carbon tracking as well as dirt accumulation. The installation process requires a reverse execution of removal steps to properly mount ignition coils.

The service of ignition coil-on-plug begins with disconnecting the negative battery cable. Before installation tighten the ignition coil cover bolts to 10 Nm (89 lb-in). One must first remove ignition coil cover bolts. The removal process includes first emptying ignition coil covers and disconnecting the 8 ignition coil electrical connectors before taking off the 8 ignition coils. Apply silicone dielectric compound inside the ignition coil boots before installing them. Conclude the installation through the reversal of the removal steps.

Service and repair of ignition coils should begin with disconnecting the battery ground cable. First remove the right-hand spark plug cover by uninstalling its bolts then pulling off the lid. The service requires removal of RH ignition coils following the disconnection of their connectors and coil extraction from spark plugs. The procedure should be repeated for both ignition coils attached to the left-hand spark plug cover. The inspection seeks to identify cracks and carbon tracking and dirt on the ignition coils. The installation process begins by cleaning the "T" joints made by spark plug cover with wiring harness grommet and cam cover on both sides of the engine. Reinstall the LH ignition coils to the spark plugs while connecting the electrical connectors and applying silicone brake caliper grease and dielectric compound inside the ignition coil boots. The wiring harness grommet needs to be placed in the cam cover groove before applying a 3 mm (0.12 in) diameter by 10 mm (0.4 in) long bead of silicone sealer onto both "T" joint surfaces where the wiring harness grommet meets the cam cover and spark plug cover. Fasten down the LH spark plug cover using its bolts. Reinstall the RH ignition coils by applying identical grease and compound on their coils while installing the wiring harness grommet followed by silicone sealing of the "T" joints. The execution of the procedure ends with the RH spark plug cover bolt installation and the reconnection of the battery ground cable.

The ignition coil service requires first unscrewing the bolts holding the ignition coil cover and then disconnecting the electrical connector from the ignition coil before removing the coils. You should perform installation by doing the opposite of removal steps.

A proper servicing of the ignition coil begins with removing bolts and ignition coil cover. After taking off the ignition coil electrical connector you should remove the ignition coils. You should reverse the steps to install the parts after removal.

The service for ignition coil-on-plug requires disconnecting the battery ground cable then taking off the air cleaner outlet tube. Start by removing the right-hand ignition coil cover after you unscrew all its cover bolts followed by disconnection of connectors which paves the way to ignition coil removal. Apply the same procedure to the left-hand ignition coil cover by first disconnecting connectors before unfastening the coil. After examining the ignition coil boot check the spring position and then inspect the boot tip for damage before installing the ignition coils. Installation of the ignition coil requires the removal procedure to be performed in reverse order with lightweight silicone brake caliper grease and dielectric compound applied to the inside of each boot.

Ensure that the spark plug wires are connected to the correct ignition coil terminal.

Carefully squeeze the locking tabs and twist while pulling upward, ensuring to mark their locations for correct reinstallation.

Carefully twist and pull upward to disconnect the spark plug wires, ensuring to mark their locations for correct reinstallation.

Ensure that the spark plug wires are connected to the correct ignition coil terminal.

It should be reinstalled under the correct mounting bolt.

Tighten them to 6 Nm (53 lb-in).

Remove the right-hand ignition coil cover bolts and the cover.