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How to Replace Fuel Pumps in a 1995 Buick LeSabre

The Buick LeSabre was a series of full-size cars that the Buick division of General Motors produced from 1959 to 2005. The 1995 Buick Lesabre was a 4-door sedan with a 6-cylinder 3.8-liter engine. This engine used sequential fuel injection to deliver high-pressure fuel to the fuel injectors. The fuel pump in the 1995 Buick LeSabre was in the fuel tank, requiring you to remove the fuel tank when replacing the fuel pump.

Instructions

1

Disconnect the negative terminal on the battery with a socket wrench to avoid starting the engine accidentally. Open the fuel filler cap to relieve the vapor pressure in the fuel tank. Remove the cap for the fuel pressure fitting on the fuel rail, and wrap a shop towel around the fuel pressure fitting. Attach fuel pressure valve J 34730-1A to the fuel pressure fitting, and place the bleed hose into container approved for gasoline. Open the valve to release the pressure in the fuel system, and fasten the fuel filler cap.

2

Raise the vehicle with a jack and support it on jack stands. Disconnect the filler vent hose from the fuel tank and connect the open end of the hose to a hand-operated pump. Drain as much fuel from the fuel tank is possible into a gasoline container.

3

Detach the electrical connector for the fuel sender and remove the fuel lines from the fuel sender. Disconnect the quick connectors for the fuel pipe and support the fuel tank with jack stands. Remove the bolts for the fuel tank retaining straps with a socket wrench and disconnect the rear hangar of the exhaust system. Disconnect the fuel tank and remove it from the vehicle.

4

Turn the locking ring for the fuel sender assembly counterclockwise with tool J-24187. Lift the fuel sender assembly carefully from the fuel tank, detach the fuel pump from the fuel gauge sender unit. Discard the O-ring on top of the fuel sender. Disconnect the electrical connector for the fuel comp, and release the clamps around the fuel pump. Pull the fuel from its rubber connectors.

5

Install the new fuel pump by performing Steps 2 through 4 in reverse, ensuring that you also install a new O-ring. Fill the fuel tank, and connect the negative terminal on the battery with a socket wrench. Turn the ignition on to pressurize the fuel system, and check for fuel leaks.

Posted by Unknown at 12:15 AM

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Labels: 1995, a, buick, fuel, how, in, lesabre, pumps, replace, to