SOURCE: 1994 pontiac bonneville fires up but stalls imediatly
WOW a 94 with 46K on it thats rare. Your computer may be bad it sends the pulse to the injector.
SOURCE: 1988 silverado, tbi 350 has 12 psi fuel pressure,
Fuel pressure is a little low, check the pressure regulator, and the fuel filter
SOURCE: 2000 Malibu Starts then looses
Keep in mind that you have several components there:
- Fuel Pump Sender Assembly,
- Fuel Pressure Regulator,
- Fuel Rail Assembly, and
- Fuel Injectors.
1.- Fuel Pump (Sender Assembly) - TESTING
Refer to the accompanying charts for fuel pump diagnosis and testing.
The fuel injection system remains under pressure, even after the engine has been turned OFF. The fuel system pressure must be relieved before disconnecting any fuel lines. Failure to do so may result in fire and/or personal injury.
Fig. 3.1L engine OBD system check to be done before fuel pump
relay circuit diagnosis
Fig. 3.1L engine fuel pump relay circuit diagnosis (1 of 2)
Fig. 3.1L engine fuel pump relay circuit diagnosis (2 of 2)
Fig. View of the fuel pressure test port (Schrader valve)-3.1L
engine
A - 3.1L engine fuel system pressure test (1 of 4)
B - 3.1L engine fuel system pressure test (2 of 4)
C - 3.1L engine fuel system pressure test (3 of 4)
D - 3.1L engine fuel system pressure test (4 of 4)
Fig. The fuel pump/fuel sender module assembly is mounted in the
fuel tank
2.- Fuel Pressure Regulator - REMOVAL & INSTALLATION
(the fuel pressure regulator, which is
located on the fuel rail assembly)
NOTE: Before removing the fuel regulator assembly, place a clean
shop towel under the regulator to catch any fuel drips
To install:
WARNING
The fuel return pipe must be connected before tightening the
regulator retaining screw to prevent the regulator from rotating.
Rotation of the regulator could damage the retainer and spacer bracket
and lead to a fuel leak at the regulator inlet.
continue...
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