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Can you tell me how to change fuel pump on a 1990 chevy lumina

I think my fuel pump is out on my lumina

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when you drop the tank by following these directions you will have access to the pump

1989-94 Vehicles
See Figures 1 and 2

  1. Disconnect the negative battery cable.
  2. Properly relieve the fuel system pressure, as outlined earlier in this section.
  3. Raise and safely support the vehicle.
CAUTION Observe all applicable safety precautions when working around gasoline. Do not allow fuel spray or fuel vapors to come in contact with a spark or open flame. Keep a dry chemical (Class B) fire extinguisher near the work area. Never drain or store fuel in an open container due to the possibility of fire or explosion.
  1. Use a suitable hand operated pump device to drain the fuel through the filler tube into an approved container.
Before disconnecting any fuel lines from the fuel tank, thoroughly clean around all hose connections.
  1. Disconnect the fuel filler vent hose from the fuel tank.
  2. Detach the fuel filler hose from the fuel filler inlet tube on the fuel tank. Position the hose out of the way.
  3. Disconnect the vapor hose from the front of the fuel tank.
  4. Detach the fuel return pipe and position the hose out of the way.
  5. Disconnect the two rear rubber exhaust hangers from the rear of the exhaust system and allow the exhaust system to hang down slightly.
  6. Unfasten the exhaust shield mounting bolts, then remove the exhaust shield.
  7. Support the fuel tank with a suitable jack.
  8. Remove the two bolts securing the fuel tank straps, then swing the straps out of the way.
  9. Lower the fuel tank enough to disconnect the vapor hose from the fuel sender assembly and the vapor hose from the vapor pipe at the rear of the fuel tank.
  10. Detach the electrical connector from the fuel sender assembly and remove the two retaining clips.
  11. Remove the tank from the vehicle, slowly to ensure all connections and hoses have been disconnected.
To install:
  1. Clean all parts well. Inspect the tank for dents, rust or other damage. On high-mileage vehicles, it may be good practice to remove the fuel pump module and replace the flexible strainer on the fuel pump.
  2. Position the fuel tank under the vehicle and raise the tank with a suitable jack.
  3. Connect the vapor hose to the fuel tank at the vapor pipe at the rear of the tank and connect the vapor hose to the sender assembly.
  4. Attach the electrical connector to the fuel sender assembly.
  5. Connect the fuel feed and return lines to the sender assembly.
  6. Raise the tank into position into the vehicle and swing the mounting straps under the tank.
  7. Install the front fuel tank strap mounting bolts and tighten to 35 ft. lbs. (47 Nm).
  8. Remove the jack.
  9. Connect the fuel return pipe to the fuel feed pipe.
  10. Attach the rear fuel feed pipe to the inlet side of the fuel filter.
  11. Tighten the line fittings to 16 ft. lbs. (22 Nm). Make sure to use a back-up wrench to prevent the fuel filter from turning.
  12. Connect the vapor hose to the vapor pipe at the front of the vehicle.
  13. Attach the fuel filler vent hose to the tank. Connect the fuel filler hose to the fuel filler neck of the tank.
  14. Install the exhaust heat shield and the mounting bolts.
  15. Position the exhaust system and install the rubber hangers.
  16. Carefully lower the vehicle, then refill the fuel system
  17. Connect the negative battery cable, then install the fuel filler cap, if not done already.
  18. Turn the ignition switchONfor 2 seconds, OFF for 10 seconds, thenONand check for fuel leaks.

Posted on Jan 20, 2009


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