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Sergio

Sergio 9/30/2019

2006 Mercury Montego Premier 6 Cyl 3.00L

Engine

Car starts but shuts off quickly will not stay on

The EGR valve has replaced show me the fuel injectors fuel filter. The car cranks and starts then shuts off quickly I checked the fuel pressure and it's fine can't figure it out need help

1 Answer


Jimm

Jimm 9/30/2019

First question - what exactly is the fuel pressure measured at these two points; the fuel pump outlet and at the engine fuel rail?

Given the lack of details about what was tested and results, there are several possibilities; faulty / clogged fuel filter, faulty fuel pressure regulator, faulty fuel pump, fuel system leak - to list only a few.

The fuel pressure should be at least 60- 66 psi with the ignition key on and the engine off. The fuel pressure will drop some when started. If it is low then the fuel pump is weak.

The fuel pump is in the fuel tank, but your model has an access cover below the rear seat cushion and can be changed without dropping the tank:

Directions:

Disconnect the negative battery cable.
Drain the fuel tank.
Remove the rear lower seat cushion.
Remove the fuel pump module cover.
Remove any dirt that has accumulated around the fuel pump module attaching flange to prevent it from entering the tank during service.
Disconnect the fuel pump electrical connectors.
Disconnect the fuel pump quick connect coupling from the fuel pump module.
Disconnect the fuel vapor tube quick connect coupling from the fuel pump module.
Turn the fuel pump module locking ring using a locking ring removal tool, and remove the locking ring.
Remove the fuel pump module and disconnect the quick connect fittings from the bottom of the fuel pump.

Try these various on-line parts vendors; www.autopartsanything.com; www.partsgeek.com; www.rockauto.com - to list only a few.

In fact, they (RockAuto) list the fuel filter from around $2.00 each, and the fuel pump assembly from around $98.00 for your vehicle.

Fuel filter = WIX part #33595 - or it's equivalent

Fuel pump and housing assembly = SPECTRA PREMIUM part #SP2078M {#5G1Z9H307AA, 6G1Z9H307A} - or it's equivalent

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