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How many inertia fuel pump switches are there on a 2002 Lincoln LS V8 ?

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  • Lincoln Master
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One ! and there is a fuel pump relay in the under hood fuse/relay box .But that's not all there is a rear control module too . Computer controlled fuel pump .

Posted on Dec 05, 2016

  • Jeff Armer Dec 05, 2016

    Fuel Pump Driver Module
    Note: For the Thunderbird and LS6/LS8, the FPDM functions are incorporated in the Rear Electronic Module (REM). Fuel pump operation is the same as applications using the stand-alone FPDM. The REM will, however, communicate diagnostic information through the BUS +/- circuits (SCP) instead of using a fuel pump monitor (FPM) circuit.

    The fuel pump driver module (FPDM) receives a duty cycle signal from the PCM and controls the fuel pump operation in relation to this duty cycle. This results in variable speed fuel pump operation. The FPDM sends diagnostic information to the PCM on the fuel pump monitor circuit. For additional information, refer to PCM Outputs, Fuel Pump and PCM Inputs, Fuel Pump Monitor in this section

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Have to wonder if you have checked the Inertia switch. It is either in the trunk or behind a front kick panel. When this switch activates it kills power to your fuel pump.

Check Autozone site for free diagrams once you register in the site. The help section at the bottom of the web page has both free and pay info. You will have to navigate to go where you need to go.

Also remember you have a fuel pump Relay which is probably marked on the cover of one of the Power boxes.

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So you can hear the fuel pump actuate when you turn the key to `ON' position? If not,is there a fuel pump inertia switch cutoff? That cuts power to the pump in collisions.Sometimes they just work and kill your pump for no reason it seems.
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How did you test the fuel pump?
Which one Distribution Pump or Transfer Pump?
Do you have fuel presuure at the rail?
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V8--V6!

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the relay is in the battery juntion box near the battery, it is K4, (far right in the middle) check the fuses too. Also check the inertia fuel shut off switch. it may ned to be reset. It is located behind the LH A piller trim plate. (drivers side foot panel) it has a red button to push for reset.

(:DK

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