How to Replace Ignition Coil on a 2003 Ford Escape

Time was, replacing an ingnition coil on a  Ford engine's spark was controlled by a mechanical distributor, which dispersed spark among the various spark plug wires based on the gears at the base.

Ford has changed their process & modernized the ignition process in vehicles like the Ford Escape, & now there's individual ignition modules that control each spark plug, making the engine run more effectively.


If of those ignition modules ought to malfunction, your engine will run poorly & an engine code may be displayed.

 
Things You'll Need

•   TEKTON 1916 Combination Wrench Set, SAE/Metric, 24-Piece
•   TEKTON 1601 3/8-Inch Drive Extension Bar Set, Cr-V, 3-Piece
•   New Ignition Coil Set (6PCS) 2003 Ford Escape GDG500 18LZ12029AA

Instructions



    Pop the hood & disconnect the negative terminal from the battery using an open-end wrench.
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    Locate the ignition coil that you need to replace. Remove the ignition wires on either finish of the ignition coil by gripping the boot on the wire & pulling. Unplug the wiring harness from the ignition coil simultaneously.

  
    Unbolt the ignition coil from the mounting bracket using the 3/8-inch ratchet, extension & socket. Remove the coil from the engine bay, then place the replacement onto the bracket & secure it using the factory hardware & the 3/8-inch ratchet, extension & sockets.
   
    Clip the wiring harness in to the ignition coil & push the ignition cables onto the posts on the ignition coil until they make a popping sound, indicating that the boot is securely on the electrode. Then reinstall the negative terminal on the battery using an open-end wrench.


Resources:

Ford Escape & Mazda Tribute: 2001 thru 2011 - Includes Mercury Mariner (Haynes Manuals)