How to Replace the Ignition Coil in a Ford Mustang

In 1979, Ford began incorporating a distributor ignition system in the Mustang. This system relies on the Mustang ignition coil to trigger the spark plugs. Newer models use a distributorless ignition system, some of which use an ignition coil pack rather than ignition coils.

Instructions

1

Determine the type of ignition system on your Mustang. In 1989, Ford began to use both a distributor and distributorless ignition systems. In these later years, the 4.6L and 5.4L engines continue to use ignition coils rather than a coil pack.

2

Detach the ground cable for the battery to ensure safety. Also, disconnect the wires connecting to the ignition coil. If you have a condenser connector equipped, you need to disconnect it, too.

3

Use a socket set or a wrench to unfasten the bolts on the coil. On models later than 1989, you may need to gently twist the ignition coil to break the seal.

4

Replace the old Ford Mustang ignition coil with the new one. Verify the types of engines and the year the ignition coil fits. With a history as long as the Mustang's, you don't want to buy the wrong part.

5

Reverse the steps to reassemble the ignition system. Start the Ford Mustang to test that the repair was successful.