Tuesday, May 6, 2014
1997 Jeep Fuel Pump Repair
Chrysler uses the Jeep marquee for its line of off-road and sport utility vehicles. The 1997 models include the Cherokee, Grand Cherokee and Wrangler. These vehicles use multi-port fuel injection, requiring the fuel pump to deliver highly-pressurized fuel. The fuel pump in a 1997 Jeep is located under the vehicle, requiring you to raise the vehicle to service the fuel pump. These fuel pumps are not user serviceable, so you must replace a malfunctioning fuel pump.
Instructions
- 1
Disconnect the cable to the negative terminal on the battery with a socket wrench. This will prevent the accidental discharge of fuel while you replace the fuel pump. Siphon fuel from the fuel tank into a gasoline container until the fuel tank is below 1/4 full.
2Block the front wheels with chocks to prevent the accidental movement of the vehicle. Raise the vehicle with a floor jack and support it on jack stands. Disconnect the fuel hoses from the fuel sending unit.
3Disconnect the electrical wiring from the fuel sending unit. Turn the locking ring from the field sending unit counterclockwise with a hammer and brass punch. Remove the locking ring and detach the field sending unit from the vehicle. Remove and discard the O-ring on the fuel tank.
4Remove the fuel filter from the fuel sending unit and discard it. Detach the electrical wiring from the fuel pump. Release the clamp on the fuel line for the fuel pump and disconnect the fuel line. Remove the nut for the top mounting bracket of the fuel pump with a socket wrench. Detach the fuel pump from the rest of the fuel sending unit.
5Replace the fuel filter on the fuel pump and install the fuel pump into its top mounting bracket with a socket wrench. Connect the electrical wiring and fuel lines to the fuel pump. Place a new O-ring on the fuel tank.
6Place the locking ring onto the fuel sender unit and turn it clockwise with the hammer and brass punch until it reaches to the stop on the fuel tank. Connect the fuel lines and electrical wiring for the fuel tank. Lower the vehicle with the floor jack and fill the fuel tank with fuel. Start the engine and check for fuel leaks.
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