How to Replace Fuel Injectors for an 88 Jeep

Chrysler uses its Jeep brand for its off-road and sport-utility vehicles. The 1988 Jeep models included the Cherokee, Comanche, Wagoneer, Grand Wagoneer and Wrangler. These vehicles came equipped with fuel injectors, which deliver the correct fuel-air mixture to the engine, at the correct timing. To access the fuel injectors in a 1988 Jeep, you will need to remove additional components. The procedure for replacing the fuel injectors is generally the same for all 1988-made Jeeps.

Instructions

1

Remove the cable from the negative battery terminal, using a socket wrench, to prevent the battery from generating sparks. Disconnect the air cleaner and its hose. Remove the upper and lower bonnets from the throttle body.

2

Press the tabs on the electrical wire for the fuel injector and pull the wire up to disconnect it from the fuel injector. Remove the screws from the retainer clip on the fuel injector, using a socket wrench, and detach the retainer clip from the fuel injector.

3

Grab the center collar of the fuel injector between the electrical terminals with a small pair of pliers. Rock the fuel injector gently back and forth while lifting it from the injector bore of the throttle body. Ensure that you do not twist the fuel injector while removing it. Discard all of the O-rings and the centering ring from the fuel injector.

4

Apply a coating of transmission fluid to the new O-rings and install them into the injector bore of the throttle body. Place the new centering ring on top of the upper O-ring. Align the fuel injectors locating ring, with its slot on the injector housing of the throttle body. Place the fuel injector into the injector bore of the throttle body and attach the retaining clip. Fasten the screws for the retainer clip, using a socket wrench.

5

Connect the electrical wiring for the fuel injector. Attach the upper and lower bonnets to the throttle body, using a socket wrench. Install the air cleaner and connect the air cleaner house. Attach the cable for the negative battery terminal.