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Fuel sending unit test and replace


Checking and replacing a fuel sender unit ' How a Car Works

www.howacarworks.com/fuel.../checking-and-replacing-a-fuel-sender-u...
Learn how to check and replace a fuel gauge sender unit, and how to check a fueltank. ... Fuel pipe Sender lead Breather pipe Sender unit Petrol tank Filter Float arm Float Mounting flange Filler .... Test by quickly removing the filler cap.

How to test a Fuel Sender - YouTube

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Toyota Corolla Fuel Pump Removal Sending Unit Testing. ...Camry 1997 1998 1999 2000 2001 fuel pump replacement - Duration: 9:32.


Jan 13, 2016 | Cars & Trucks

1 Answer

How to replace fuel sending unit


Hi Shelly,the fuel sending unit is intregated with fuel pump,so you will have to remove fuel pump to replace fuel sending unit,some new pumps come with fuel sending unit.They can be replaced separately,here's how.

Dec 22, 2012 | 2000 Ford Escort

1 Answer

Replace fuel pump 1993 mazda 323



REMOVAL & INSTALLATION

323, Protege, 520-22 626 and MX-6 and 522-24 MX-3 Models
See Figures 1 and 2

  1. Relieve the fuel pressure and disconnect the negative battery cable.
  2. If not already removed, depress the clips on each end of the rear seat cushion and remove the cushion.



0900c152802612b0.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 1: Detach the fuel hoses and electrical connections from the fuel pump, then remove the attaching screws and the pump


0900c152802612b1.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 2: Exploded view of the fuel pump assembly for the 323, Protege, 520-22 626, MX-6 and 522-24 MX-3

  1. If not already done, detach the electrical connector from the fuel pump/sending unit.
  2. Remove the attaching screws from the fuel pump/sending unit access cover and remove the cover.
  3. Disconnect the fuel supply and return hoses from the fuel pump/sending unit.
  4. Remove the attaching screws and the fuel pump/sending unit from the fuel tank.
  5. Detach the sending unit electrical connector, remove the sending unit attaching nuts and remove the sending unit from the fuel pump assembly.

To install:
  1. Attach the sending unit to the fuel pump assembly and install the nuts. attach the sending unit electrical connector.
  2. Install the fuel pump/sending unit into the fuel tank with a new gasket and install the mounting screws.
  3. Connect the fuel supply and return lines.
  4. Install the access cover and the mounting screws.
  5. Attach the sending unit electrical connector.
  6. Position the rear seat cushion over the floor, making sure to align the retaining pins with the clips. Push down firmly until the two retaining pins are locked into the rear seat retaining clips.
  7. Connect the negative battery cable, start the engine and check for proper system operation and for fuel leaks.

May 08, 2012 | 1993 Mazda 323

1 Answer

How to replace fuel sending unit


The sending unit is on the top of the fuel tank. You have to drop the tank from the car. The fuel sending unit is in a connector that the fuel pump is on. This will have a retaining ring that you have to remove to get to the sending unit. Once you remove the ring then the fuel pump, sending unit will come out.

Dec 02, 2010 | 1992 Lexus Ls 400

1 Answer

How do i replce the fuel pump


  1. Properly relieve the fuel system pressure.
  2. Connect the negative battery cable.
  3. Drain the fuel tank, then remove it from the vehicle. Refer to the procedure found later in this section for details.

    Using the GM fuel gauge sending unit retaining cam tool No. J-24187, J-36608 (or equivalent) or a brass drift and a hammer, remove the cam locking ring (fuel sending unit) by twisting counterclockwise. With the locking ring released, carefully lift the sending unit from the fuel tank.

    Remove the fuel pump from the fuel sending unit, by performing the following procedures:
    1. Pull the fuel pump up into the mounting tube, while pulling outward (away) from the bottom support.



    When removing the fuel pump from the sending unit, be careful not to damage the rubber insulator and the strainer.
      1. When the pump assembly is clear of the bottom support, pull it out of the rubber connector.


    To install:
    1. Inspect the fuel pump hose and bottom sound insulator for signs of deterioration, then replace, as necessary.
    2. Push the fuel pump onto the sending tube.
    3. Using a new sending unit-to-fuel tank O-ring, carefully lower the sending unit/fuel pump assembly into the fuel tank.

    When installing the sending unit, be careful not to fold or twist the fuel strainer or it may restrict the fuel flow.
    1. Secure the sending unit by turning or driving the locking clockwise and into position under the tabs.
    2. Install the fuel tank assembly to the vehicle.
    3. Connect the negative battery cable and check for proper pump operation.
NOTE: A special tool is usually available to remove or install the fuel pump locking cam
A brass drift and a hammer can be used to loosen the fuel pump locking cam
Once the locking cam is released it can be removed to free the fuel pump

Sep 24, 2010 | 1999 Oldsmobile Bravada

1 Answer

How do you replace a GMC Yukon Denali fuel pump? And where is it located on the Denali?


Fuel Pump
Removal & Installation
To Remove:


  1. Remove the fuel tank.
  2. Disconnect the fuel lines.
  3. Using the J 45722 or equivalent, remove the sending unit lock ring.






    chevy_aval15_02-04_j44402.gif



  4. Remove the sending unit and seal.
  5. Discard the seal.
    CAUTION
    Drain the fuel from the fuel sender assembly
    into an approved container in order to reduce the risk of fire and personal
    injury. Never store the fuel in an open container.

  6. Clean sealing surfaces.

To Install:

CAUTION
In order to reduce the risk of fire and
personal injury that may result from a fuel leak, always replace the fuel sender
gasket when reinstalling the fuel sender assembly.


  1. Install a NEW seal.
    CAUTION
    The fuel pump strainer must be in a
    horizontal position when the sending unit is installed in the tank. When
    installing the sending unit, assure that the fuel pump strainer does not block
    full travel of the float arm.

  2. Install the sending unit into the fuel tank.
  3. Using J 45722 or equivalent, install the sending unit lock ring.
  4. Connect the fuel lines to the sending unit.
  5. Install the fuel tank.


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Sep 23, 2010 | 2000 GMC Yukon Denali

1 Answer

How do I change the fuel pump in a 1998 S-10 chevy pickup?


The electric pump is attached to the fuel sending unit, located in the fuel tank.

9b87eff.jpg

Fig. 1: Exploded view of the fuel pump and related components used on TBI equipped models (click for zoom)



REMOVAL & INSTALLATION
  1. Properly relieve the fuel system pressure.
  2. Connect the negative battery cable.
Be sure to keep a Class B (dry chemical) fire extinguisher nearby.

CAUTION Due to the possibility of fire or explosion, never drain or store gasoline in an open container.
  1. Drain the fuel tank, then remove it from the vehicle. Refer to the procedure found later in this section for details.
  2. Using the GM fuel gauge sending unit retaining cam tool No. J-24187, J-36608 (or equivalent) or a brass drift and a hammer, remove the cam locking ring (fuel sending unit) by twisting counterclockwise. With the locking ring released, carefully lift the sending unit from the fuel tank.
  3. Remove the fuel pump from the fuel sending unit, by performing the following procedures:
    1. Pull the fuel pump up into the mounting tube, while pulling outward (away) from the bottom support.
When removing the fuel pump from the sending unit, be careful not to damage the rubber insulator and the strainer.
    1. When the pump assembly is clear of the bottom support, pull it out of the rubber connector.
To install:
  1. Inspect the fuel pump hose and bottom sound insulator for signs of deterioration, then replace, as necessary.
  2. Push the fuel pump onto the sending tube.
  3. Using a new sending unit-to-fuel tank O-ring, carefully lower the sending unit/fuel pump assembly into the fuel tank.
When installing the sending unit, be careful not to fold or twist the fuel strainer or it may restrict the fuel flow.
  1. Secure the sending unit by turning or driving the lockring clockwise and into position under the tabs.
  2. Install the fuel tank assembly to the vehicle.
  3. Connect the negative battery cable and check for proper pump operation.

Hope this helps (/remember to rate and comment this).

Sep 17, 2010 | 1998 Chevrolet S-10 Pickup

1 Answer

Do you have to drop the tank to change the fuel pump on 93 plymouth voyager or is there a way from the top?


Yes the tank must be removed

Fuel Pump: Service and Repair
WARNING: The fuel system is under constant pressure, even when the engine is OFF. Always release fuel pressure before servicing any fuel
system component.
FUEL PUMP REMOVAL
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.

Sep 10, 2009 | 1993 Plymouth Voyager

1 Answer

How do i replace the fuel pump in my 1993 mazda 626 2.5


1. Relieve the fuel pressure and disconnect the negative battery cable.

2. If not already removed, depress the clips on each end of the rear seat cushion and remove the cushion.

3. If not already done, detach the electrical connector from the fuel pump/sending unit.

4. Remove the attaching screws from the fuel pump/sending unit access cover and remove the cover.

5. Disconnect the fuel supply and return hoses from the fuel pump/sending unit.

6. Remove the attaching screws and the fuel pump/sending unit from the fuel tank.

7. Detach the sending unit electrical connector, remove the sending unit attaching nuts and remove the sending unit from the fuel pump assembly.



To install:

1. Attach the sending unit to the fuel pump assembly and install the nuts. attach the sending unit electrical connector.

2. Install the fuel pump/sending unit into the fuel tank with a new gasket and install the mounting screws.

3. Connect the fuel supply and return lines.

4. Install the access cover and the mounting screws.

5. Attach the sending unit electrical connector.

6. Position the rear seat cushion over the floor, making sure to align the retaining pins with the clips. Push down firmly until the two retaining pins are locked into the rear seat retaining clips.

7. Connect the negative battery cable, start the engine and check for proper system operation and for fuel leaks.

Jun 13, 2009 | 1993 Mazda 626

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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