Question about 2000 Ford Mustang

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Fuel pump location and replacement

2000 mustang 3.8 v6 doesnt start... We replaced the fuel filter, the car started after spraying carborator cleaner into the air intake, but didnt stay running... seems like gas isnt getting to the engine. The fuel pump fuse is fine, the test light lit when testing the fuse. Is this a fuel pump problem? if so how do i drop the fuel tank? guessing the fuel pump is located there... or can it be the fuel pump relay?

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  • kmedeiros1 Mar 20, 2009

    thank you for your reply, but i am not good at reading those diagrams very well, is there a photo of the engine compartment where i can see exactly where it is, there are a couple things behind the coolant resovour and im not sure which... thanks again

  • kmedeiros1 Mar 20, 2009

    sweet i found it... thank you, i actually found it above the wheel splash guard, inside the passenger quarter panel... now that i found it how do i test it?

  • Anonymous Mar 28, 2014

    dash lights dont work

  • Anonymous Mar 31, 2014

    We replaced the fuel pump and the car still won't start. It seems there is no power to the fuel pump. Any ideas? It does turn over but will not start.

  • Carmen Nunn
    Carmen Nunn Feb 19, 2017

    my husband just checked the relay switch and it still isn't getting gas to the engine. can it be a fuse, and if so, which one?



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  • Expert
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Verify it is your pump and not a bad crankshaft position sensor. Take off the gas cap and put your ear next to the filler hole. Have someone turn the key to run, but don't crank. If you hear a whirring sound inside the tank, the pump and relay are almost guaranteed to be ok. If the crankshaft position sensor has died, it will not tell the computer when to open the fuel injectors and therefore the fuel will not get to the engine. I would check that before spending the money and taking the time to drop the tank to change a pump that may be good.

Posted on Feb 19, 2017


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You are looking for the constant control relay module- ( CCRM ) see below. The pump will be located inside the fuel tank.Most of the time , its the pump and not the relay but, it wouldn't hurt to check the relay out. Teh relay is housed in the CCRM. Its located behind the engine coolant reservoir.

fuel pump location and replacement - 3dc24e5.jpg

Posted on Mar 20, 2009

  • 5 more comments 
  • Michael Masters
    Michael Masters Mar 20, 2009

    Here is a larger view.

  • Michael Masters
    Michael Masters Mar 20, 2009

    Here is the location. the fuel pump relay is in the blue.

  • Michael Masters
    Michael Masters Mar 20, 2009

    Its the junction box behind the coolant tank(reservoir)

  • Michael Masters
    Michael Masters Mar 20, 2009


  • Michael Masters
    Michael Masters Mar 20, 2009

    Park your car in a safe place, open the hood and locate the fuel
    pump relay. On most vehicles it is mounted on the fuse panel or close
    to it inside the engine compartment. Other models mount the fuel pump
    relay under the dashboard or on the driver or passenger side. Markings
    on the relay itself or inside the back of the fuse box cover should
    identify the fuel pump relay.

    Unplug the relay, being careful no to break the lock tabs.

    Identify the two control circuit terminals and the two power
    circuit terminals. Most relays have a diagram printed on the case
    itself to identify these terminals. If not, look at the mounting base
    of the relay. The two thin-gauge wires that connect to the relay feed
    the control circuit terminals; the other two thick-gauge wires connect
    to the power terminals.

    Test for continuity between the two power terminals on the relay. Using
    an ohmmeter, set it at the lowest resistance range and touch the meter
    leads to each of the relay power terminals. You should read infinite
    resistance; otherwise, the contact points are shorted. If this is the
    case, replace the relay.

    Connect the end of a fused jumper wire to the positive terminal of the
    car battery (see the Tips section bellow) and the other end to one of
    the control circuit terminals on the relay. Hook the end of a regular
    jumper wire to the other control terminal and touch the other end of
    the jumper wire to a good ground on your vehicle
    (this could be the engine block itself). As you touch ground with the
    wire, the relay should make a clicking sound. If not, swap the jumper
    wire connections. If you still cannot hear the click sound, the relay
    is shorted. Replace the relay.

    Leave the jumper wires connected to the relay control terminals and
    test the power terminals for continuity as you did in step 4. This time
    you should read zero or a resistance value in the hundredths or
    thousandths. If you read infinite resistance, replace the relay.

  • Michael Masters
    Michael Masters Mar 20, 2009

    Tips & Warnings

    • You
      can buy a cheap fused jumper wire at most automotive parts stores.
      If you need help locating or identifying components in your vehicle,
      consult your owner's manual or vehicle service manual. You can buy one
      at most auto parts stores or consult one for free at most public

  • Michael Masters
    Michael Masters Mar 20, 2009

    Please rate and god bless.



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