What is high temperature fuel sender? replacing fuel pump on 1995 c1500 5.7L

The fuel level sender is located on the fuel pump hanger assembly. Sometimes the fuel pump, sender and hanger are all individually serviceable while other times the whole unit is replaced as a module assembly. The fuel level sender works by taking a 5 volt reference signal sent by the powertrain control module (PCM), modifying the voltage using resistance based on fuel level, then sending that signal back to the PCM. The PCM then reports the information to the body control module (BCM) so that the fuel level gauge in the instrument cluster can be adjusted accordingly. Fuel level senders are the most common failure for inaccurate fuel gauge readings. When the sender (or module assembly) is replaced, it's important to ensure the float is properly attached to the sender arm otherwise the resistance will not change with fuel level as designed. If this was done properly then there is likely a problem with the gauge or in the circuit between the level sender and the PCM. One easy way to test the circuit and gauge is to unplug the fuel pump; this creates an infinitely high resistance which should bottom out the gauge. Then, a jumper wire can be used to short the two sender wires (the smaller 2 of the 4 wires) to create a zero-resistance circuit which should top out the gauge. You can read more here: https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-fuel-gauge-sender

The fuel pressure regulator is inside the gas tank , it's part of the fuel module . No vacuum line inside the fuel tank .

The Fuel System is a returnless on-demand design. The fuel pressure regulator is a part of the fuel sender assembly, eliminating the need for a return pipe from the engine. A returnless fuel system reduces the internal temperature of the fuel tank by not returning hot fuel from the engine to the fuel tank. Reducing the internal temperature of the fuel tank results in lower evaporative emissions.
An electric turbine style fuel pump attaches to the fuel sender assembly inside the fuel tank. The fuel pump supplies high pressure fuel through the fuel filter and the fuel feed pipe to the fuel injection system. The fuel pump provides fuel at a higher rate of flow than is needed by the fuel injection system. The fuel pump also supplies fuel to a venturi pump located on the bottom of the fuel sender assembly. The function of the venturi pump is to fill the fuel sender assembly reservoir. The fuel pressure regulator, a part of the fuel sender assembly, maintains the correct fuel pressure to the fuel injection system. The fuel pump and sender assembly contains a reverse flow check valve. The check valve and the fuel pressure regulator maintain fuel pressure in the fuel feed pipe and the fuel rail in order to prevent long cranking times.

If you replaced the SENSOR and not the gauge SENDER, there's your answer.

The SENSOR sends the computer (ECM, PCM, ECU, etc.) the engine temp so it can make the adjustments to the fuel, timing etc.

The gauge SENDER makes the gauge read what temperature the engine coolant is.

Hope the helps.

you must mean the fuel gauge? is dead? just a hint here.

wire /connector left loose.
when replacing any fuel pump check the 2 pins on the level sender
it will read 10 to 200 Ohms about 10 is full, and 200 or bit higher is empty, if the sender reads INFINITY. the sender is bad.
or is unplugged in the tank.
the sender is just a wire wound variable resistor.
a pot or correct name is a rheostat. (electronics, true names)
on car, its a FUEL level SENDER.

double posted.

REMOVAL & INSTALLATION Fig. 1: Exploded view of the fuel sender, including the fuel pump

1. Properly relieve the fuel system pressure, as outlined earlier. CAUTION
   Fuel injection systems remain under pressure, even after the engine has been turned OFF. The fuel system pressure must be relieved before disconnecting any fuel lines. Failure to do so may result in fire and/or personal injury.
   
2. If not already done, disconnect the negative battery cable.
3. Raise and safely support the vehicle with jackstands.
4. Safely drain and remove the fuel tank assembly as outlined later in this section.
5. Detach the quick-connects from the fuel sender assembly and remove the fuel lines.
6. Using tool J 35731, or an equivalent spanner wrench, remove the fuel sender lockring.
7. Lift the sender assembly carefully out of the fuel tank.
8. Remove the sender O-ring from the top of the sender and discard. WARNING
   Do NOT run the fuel pump unless it is submerged in fuel. Running the pump dry will cause serious damage to the fuel pump and may cause the pump to explode due to the oxygen in the air.
   
9. Note the position of the fuel pump strainer on the fuel pump and, while supporting the pump assembly in one hand, twist the strainer off the pump and discard the strainer.
10. Detach the fuel pump electrical connector.
11. Remove the clamp from the fuel line at the top of the pump.
12. Hold the fuel sender upside down on a work bench and pull the fuel pump out of the lower mounting bracket. Once the pump is clear of the lower mounting bracket, tilt the pump outward and disconnect the pump from the sender assembly. To install:
    
13. Replace any attaching hoses or rubber sound insulators that show signs of deterioration.
14. Install the rubber bumper and insulator on the fuel pump.
15. Hold the fuel sender upside down and install the fuel pump between the fuel pulse dampener and mounting bracket.
16. Attach the fuel pump electrical connector.
17. Install the retaining clamp on the fuel line.
18. Install a new fuel pump strainer on the outer edge of the ferrule until fully seated. The strainer must be facing the same direction as it was before removal.
19. Position a new O-ring on the top of the fuel tank and install the sender assembly.
20. Install the lockring using J-35731, or an equivalent spanner wrench.
21. Install the fuel tank as outlined later in this section.
22. Refill the gas tank.
23. Connect the negative battery cable.
24. Turn the ignition switch to the ON position to pressurize the fuel system and check for leaks.

i've never heard of a FUEL temp. sensor, are you SURE?

GM Camaro/Firebird 1993-1998 Repair Guide Fuel Pump - REMOVAL & INSTALLATION
(see Figures 1 and 2)
The fuel pump is part of the fuel sender assembly located inside the fuel tank.

1. Release the fuel system pressure and disconnect the negative battery cable.
2. Drain the fuel tank, then raise and safely support the vehicle.
3. Remove the fuel tank from the vehicle.
4. Clean the area surrounding the sender assembly to prevent contamination of the fuel system.
5. To remove the fuel sender from the tank, remove the fuel sender assembly nuts and retaining ring. Carefully remove the sending unit from the fuel tank. Discard the O-rings.
   

Fig. 1: Exploded view of the fuel tank and sender assembly

1. If necessary, separate the fuel pump from the sending unit assembly.
   

Fig. 2: Fuel sender and pump assembly


To install:

1. If removed, install the fuel pump to the sending unit. If the strainer was removed, it must be replaced with a new one.
2. Inspect and clean the O-ring mating surfaces.
3. Install a new O-ring in the groove around the tank opening. If applicable, install a new O-ring on the fuel sender feed tube.
4. Install the fuel sender assembly as follows:
   1. The fuel pump strainer must be in a horizontal position, and when installed, must not block the travel of the float arm. Gently fold the strainer over itself and slowly position the sending assembly in the tank so the strainer is not damaged or trapped by the sump walls.
      
5. Install the retaining ring and nuts, then tighten the nuts to 63 inch lbs. (7 Nm).
6. Install the fuel tank assembly.
7. Lower the vehicle.
8. Fill the fuel tank, tighten the fuel filler cap and connect the negative battery cable.
9. Turn the ignition switch to the ON position for 2 seconds, OFF for 10 seconds, then back to the ON position. Check for fuel leaks.

Hope this help (remember rated this post). Good luck.

This is what i was able to pull up for you to help you. please let me know if you need further asistance with your vehicle and I would be glad to assist you..

Please do not forget to rate and comment about your experience with fixya today.

Fuel System > Gasoline Fuel Injection System > Fuel Pump > Removal & Installation Removal & Installation
CAUTION The fuel injection system remains under pressure, even after the engine has been turned OFF. The fuel system pressure must be relieved before disconnecting any fuel lines. Failure to do so may result in fire and/or personal injury.

1. Relieve the fuel system pressure using the recommended procedure.
   
2. Disconnect the negative battery cable.
   
3. Drain the fuel tank, then remove the fuel tank from the vehicle.
   
4. While holding the modular fuel sender assembly down, remove the snap-ring from the designated slots located on the retainer.
   

WARNING The modular fuel sender assembly may spring up from its position. When removing the modular fuel sender from the tank, be aware that the reservoir bucket is full of fuel. It must be tipped slightly during removal to avoid damage to the float.

1. Remove the external fuel strainer.
   
2. Detach the Connector Position Assurance (CPA) piece from the electrical connector and detach the fuel pump electrical connector.
   
3. Gently release the tabs on the sides of the fuel sender at the cover assembly. Begin by squeezing the sides of the reservoir and releasing the tab opposite the fuel level sensor. Move clockwise to release the second and third tabs in the same manner.
   
4. Lift the cover assembly out far enough to detach the fuel pump electrical connection.
   
5. Rotate the fuel pump baffle counterclockwise and remove the baffle and pump assembly from the retainer.
   
6. Slide the fuel pump outlet out of slot, then remove the fuel pump outlet seal.
   

To install:

1. Install the fuel pump outlet seal, then slide the fuel pump outlet in the slots of reservoir cover.
   
2. Install the fuel pump and baffle assembly onto the reservoir retainer and rotate clockwise until seated.
   
3. Install the lower retainer assembly partially into the reservoir. Line up all 3 sleeve tabs. Press the retainer onto the reservoir making sure all 3 tabs are firmly seated.
   

Gently pull on the fuel pump reservoir from retainer to assure a secure fastening. If not secure, replace the entire fuel sender.

1. Attach the fuel pump connector.
   
2. Fasten the CPA connector to the fuel sender cover.
   
3. Install a new external fuel strainer.
   
4. Install the modular fuel sender.
   
5. Install the fuel tank in the vehicle.
   
6. Connect the negative battery cable.
   
7. Pressurize the fuel system and verify no leaks.
   

Disconnect battery ground strap before beginning to work on the fuel/electrical system. Do not smoke or have anything in the area which can ignite or cause sparks

1. Drain enough fuel from tank to prevent spilling, no more than 4 gallons (16 liters) of fuel should remain. Use suitable pumping equipment.
2. Remove floor mat and panel from trunk.

1. Disconnect wiring harness connector to sending unit. Remove wires from connector.
2. Disconnect ground wire to sender. Push wires through grommet.
3. Remove cover for access to tank sending unit.

1. All models: Disconnect from the fuel tank sending unit:

1. Breather hose C
2. Return hose A
3. Supply hose B
4. Filler hose D
5. Wiring harness from clip E

1. Clean area and unscrew fuel tank sender/pump cap or equivalent. Remove tank sender/pump and seal.
2. Remove pump from sender/pump assembly.

INSTALLATION

1. Inspect the pump for damage, feed pump hose and wiring for wear. Replace as needed.
2. Install new pump to sender/pump assembly.
3. Install rubber seal in neck of tank. Lubricate inside of seal.

1. Install fuel tank sender/pump unit. Align it with the moulded joint (arrows) on tank.
2. Apply rustproofing compound to exposed metal portions of tank sender.

CAUTION : With tape or rubber caps, protect fuel sender openings from overspray.

1. Torque fuel tank sender/pump lock ring to: 22 ft-lb (30 Nm)
2. Reassemble components in reverse order. Use tie straps to secure all hoses and wiring.

your evaprative emissions could be purging into the engine at that point too, giving too rich a mixture.

here's what you are referring to:

ISSUE: A reduced power, hesitation, stalling at low vehicle speed, idling and/or a no start condition may occur on some vehicles in hot ambient temperatures and/or high altitudes. In addition, a no start may result while the engine is still hot and the vehicle has been parked for a short period. A stall may also occur when moving the vehicle from idle. This may be caused by a lack of vapor ports in the fuel pump, resulting in a vapor lock condition or internal high wear of the fuel pump components due to tank contaminants.
ACTION: Perform normal diagnostic routines as described in the appropriate year Powertrain Control/Emissions Diagnosis Manual (PC/ED). If the condition still exists after all diagnostics are followed, replace the fuel pump with a new turbine fuel pump. Refer to the following Part Application Chart for correct part usage. Also, replace in-line fuel filter with a new filter (E7DZ-9155-A). The new turbine fuel pump will reduce the possibility of vapor lock in high ambient temperatures. Refer to the appropriate model/year Service Manual for removal and installation procedures.

PART APPLICATION CHART Model Year Vehicle Application Part Number 1986-95 Taurus/Sable 16 gal. tank - analog cluster F4DZ-9H307-A 1986-95 Taurus/Sable 18.6 gal. tank - analog cluster F4DZ-9H307-B 1988-94 Continental 18.6 gal. tank - electronic cluster F4DZ-9H307-B 1986-89 Taurus/Sable 18.6 gal. tank - electronic cluster F4DZ-9H307-A 1990-95 Taurus/Sable 18.6 gal. tank - electronic cluster F4DZ-9H307-C

PART NUMBER PART NAME F4DZ-9H307-A Fuel Pump And Sender Assembly F4DZ-9H307-B Fuel Pump And Sender Assembly F4DZ-9H307-C Fuel Pump And Sender Assembly F4PZ-9H307-A Fuel Pump And Sender Assembly E7DZ-9155-A Fuel Filter