Question about 1997 Mercury Tracer

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What is it when the fuel pump wires are not getting electricity

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There is a few things to look at . all fords and mercurys have a fuel shut switch and there is fuel pump relay in the fuel box under the hood

Posted on Nov 03, 2012

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2 Answers

Electric fuel pump works sometimes and it seams to always work if you turn the key on and off till you here the pump come on


Bad Ignition Switch

Worn out Fuel Pump

Worn Fuel Pump Relay Contacts

Do the proper testing

Do not replace any parts until
they fail a test

Mar 04, 2014 | 2000 Mercury Sable

1 Answer

I have a 92 dodge stealth rt car will not start unless I spray starting fluid into the throttle body.I had new fuel pump installed due to old pump had no pressure.Car will still not start even with new...


Did you check fuel pump electrical circuit ? Look at a wiring diagram to see what all is involved in making the fuel pump work. No , the knock sensor can't cause this ! Do you know how to do automotive electrical circuit testing using a DVOM - digital volt ohm meter ? How to read an use a wiring diagram to pin point areas for testing in a electrical circuit ! What do you think makes that fuel pump work ? AIR !!!! Looking at a wiring diagram I see a fuel pump relay that gets B+ voltage from the engine control relay. The engine computer energizes both, relays .There is a fuel pump resistor inline before the fuel pump.
Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine size. Under system click on engine then under subsystem click fuel controls ! Click the search button then the second blue link . The second diagram down shows the fuel pump electrical circuit .
Watch this videos from youtube .
Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts
Electric Testing Techniques You Need to Know

How to Use Multimeter to Troubleshoot Common Problems


Jul 06, 2017 | Dodge Stealth Cars & Trucks

1 Answer

Fuel pump and filter appears to be clogged no fuel getting to the eingein


Be very safe when you work with fuel and electricity. Only work with live wires when you are trying to measure their voltage. If fuel leaks then don't work with it until all the fuel vapor is gone. The first to do when you work on a vehicle is to disconnect the negative terminal on the battery.

There must be 12V to the pump for it to pump. If power is to the pump and the pump does not run then the fuel pump and fuel filter need to be replace. If no 12 V is to the pump then you have an electrical problem. Sometimes the pump motor fails or a wire shorts to ground. Either of these can cause a fusable link to blow. If a fusable link is blown you should disconnect the wires to the fuel pump. Next replace the fusable link and if it blows right away then the wires are shorted to ground somewhere. If you now have 12 volts to the wires you disconnected then disconnect the negative terminal of the battery and connect the wires to the pump. With the battery connected and you get fuel pressure then the engine should start. If you get no fuel pressure then the pump needs to be replaced along with the fuel filter.

I hope this helps.

Sep 19, 2011 | Hyundai Tucson Cars & Trucks

2 Answers

The fuel pump is not getting any electrical power. Why would this happen?


fuel pump relay, pump fuse, broken or worn power wire to pump. bad plug (DIRTY) wire connection at tank

Apr 14, 2011 | 1988 Ford F 150

1 Answer

1997 Ford F150 Electric Fuel Pump will npt pump


Did you check the fuel inertia switch in the passenger side kick panel ?

The fuel pump is powered :
the fuse to the fuel pump relay.
The fuel pump relay to the fuel inertia switch
The fuel inertia switch to the fuel pump itself.

At the fuel inertia switch in the kick panel, power from the relay is the Dark Green w/ Yellow stripe wire and the pink w/ black stripe wire is the power. from the fuel inertia switch to the fuel pump.

If you jumper the fuel pump relay, you should hear it run. If not pull the fuel pump relay, and check the pins in the relay socket, pin 30 should be the power from the fuse.

50b0c31.jpg

If you have power at pin #30, jumper the relay socket as shown with the red line above, and check the dark green w/ yellow stripe wire at the fuel inertia switch for power.
Press the button on the top of the fuel inertia switch, and check for power leaving the fuel inertia switch on the pink w/ black stripe wire.

This is tests good, check for power at the fuel pump, same pink w/ black stripe wire.
Fuel inertia switch info is in the owners manual, If you did not get an owners manual with your truck ( purchased used ), you can download one from Ford :
https://www.fleet.ford.com/maintenance/owners_manuals/default.asp

Jan 03, 2010 | 1997 Ford F150 Regular Cab

1 Answer

2001 f350 diesel craks but wont start


SOUND LIKE THE ELECTRIC LOW PRESSURE FUEL PUMP CHECK FUSE TO SEE IF PUMP GETTING POWER. IF NOT REPLACE FUSE AND CHECK THE WIRE TO PUMP.IF PUMP IS GETTING POWER..REPLACE FUEL FILTER FIRST.IF IT DONT HELP.COULD BE THE ELECTRIC LOW PRESSURE PUMP. FAULTY. IT PUMPS DIESEL FUEL IT INTO INJECTION PUMP TO BE PRESSURIZED TIMED AND INJECT.SEE IF LOW PRESSURE PUMP DONT WORK THE WHOLE ENGINE WONT RUN.THE INJECTION PUMP NEED FUEL FROM LOW PRESSURE ELECTRIC PUMP TO RUN ENGINE.

Aug 11, 2009 | 2001 Ford F350 Super Duty SuperCab

2 Answers

92 ford explorer (crank but no start and no noise from fuel pump)


Probably, also, if it's an electric, check to make sure the pump is actually getting power. The wires may have gone bad.

Nov 25, 2008 | 1992 Ford Explorer

1 Answer

My 95 Kia Sportage has a short in the wire running to the fuel pump what should I do?


Do you know how to find a short circuit in electrical circuits ? No !
Finding The Source Of Electrical Shorts In Your Car

Is the circuit blowing the fuel pump fuse ? No not shorted . Where does the whining noise come from ? Do you know how to do automotive electrical testing ?
Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts
Electric Testing Techniques You Need to Know

Do you know what a wiring diagram is , how to read an use one to pin point loactions in a electrical circuit for testing purposes .

Do you know the fuel pump is controlled by the ECU - engine computer . Do you know how to test a fuel pump electrical circuit ?
Testing Electric Fuel Pump Problems with Voltage Drop Test

Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine size . Under system click on engine . under subsystem click fuel controls .then click the search button .Then on the top blue link .Second diagram down is fuel pump electrical circuit .
Do you know how to test a relay ? Relays all work the same ,
VEHICLE RELAYS Operation Diagnosis




May 10, 2017 | 1995 Kia Sportage

1 Answer

Fuel sensor


  1. Release fuel system pressure.
  2. Fuel tank must be removed prior to fuel pump service.
  3. Using a hammer and a brass drift, carefully tap the fuel pump lock-ring counter-clockwise to release the fuel pump.
  4. Remove the fuel pump and its O-ring from the fuel tank, and discard the old O-ring.
  5. Cover tank openings to prevent dirt from entering system.


FUEL GAUGE SENDING UNIT REMOVAL

  1. Gently bend the sending unit locking tabs away from the sending unit.
  2. Remove the electrical connector cover (red). Remove the sending unit wires from the electrical connector.
  3. Use one screwdriver to push on the fuel pump body, and use another to release the sending unit locking tab from the sending unit.
  4. Slide the sending unit assembly off of the fuel pump reservoir housing.
  5. Pull the wires through the reservoir body and fuel pump cover plate.


FUEL GAUGE SENDING UNIT INSTALLATION

  1. Bend the sending unit wires and lay them into the slot on the back of the sending unit.
  2. Slide the sending unit into the slots on the fuel pump reservoir body. Slide the wires through the triangle shaped hole in the fuel pump reservoir body. Check that the tab in the fuel sending unit locks into the detent in the fuel pump reservoir body.
  3. Slip the wires onto the tab of the fuel pump reservoir body.
  4. Slide the sending unit wire terminals into the electrical connector. Install the terminal locking cover.
  5. Slide the fuel sending unit electrical connector into the bottom of the fuel pump electrical connector. Check that the connectors are securely attached and fully pushed into each other.
FUEL PUMP INSTALLATION

  1. Wipe seal area of tank clean, and install a new O-ring seal on pump.
  2. Position fuel pump module in tank and secure with the lock-ring.
  3. Using a hammer and a brass drift, carefully tap the fuel pump lock-ring clockwise to lock the module in place. NOTE: Do not overtighten the lock-ring, because the fuel pump seal could split and leak.
  4. Install fuel tank assembly. NOTE: ASD and fuel pump relays remain energized for 7 minutes during the following test, unless the test is stopped or the ignition switch is turned to the OFF position.
  5. Using scan tool, place ignition switch in "RUN" position and use Actuate Output Test "Auto Shutdown (ASD) Relay", to activate fuel pump and pressurize system.
  6. Check for leaks.

Nov 07, 2008 | 1999 Dodge Caravan

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