How to check and replace the fuel level sending unit in a Mercury Grand Marquis?

Raise the vehicle and support it securely on jackstands. Disconnect the electrical connector for the fuel level sensor. Note: On 1998 and earlier models, disconnect the electrical connector at the pump. On 1999 and later models, the electrical connector is located in the harness and must be disconnected at the electrical connector away from the tank. Position the ohmmeter probes into the electrical connector and check the resistance. Use the 200-ohm scale on the ohmmeter. With the fuel tank completely full, the resistance should be about 170.0 ohms. With the fuel tank nearly empty, the resistance of the sensor should be about 11.0 ohms. If the readings are incorrect, replace the sensor. A more accurate check of the sensor can be made by removing it from the fuel tank and checking its resistance while manually operating the float arm. Remove the fuel pump/sensor assembly from the vehicle. Carefully angle the sensor out of the opening without damaging the fuel level float located at the bottom of the assembly. Remove the sensor electrical connector from the fuel pump assembly. Remove the screws that secure the sensor to the fuel pump assembly. Installation is the reverse of removal. If the float arm and float wire loop were damaged or bent during removal and installation, adjust the angle and travel distance. Be sure to install a new rubber gasket.

Genuine Mercury Grand Marquis Fuel Level Sensor

Gas Gauge Sensor

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9 Fuel Level Sensors found

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Mercury Grand Marquis Fuel Tank Sender Assembly
Part Number: 6W1Z-9A299-A
$70.64 MSRP: $140.36
You Save: $69.72 (50%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sender Assembly - Fuel Tank
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2011 Mercury Grand Marquis | 8 Cyl 4.6L Romeo SOHC EFI | 4-Speed Automatic Transmission 4R75E Livonia, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Grand Marquis Fuel Tank Sender Assembly
Part Number: 2W1Z-9275-AB
$73.07 MSRP: $116.55
You Save: $43.48 (38%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sender Assembly - Fuel Tank
- Replaces: 2W1Z-9275-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2008 Mercury Grand Marquis | 8 Cyl 4.6L Romeo SOHC EFI | 4-Speed Automatic Transmission 4R75E Livonia, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Grand Marquis SENDER ASY - FUEL T
Part Number: E2BZ9275D
Product Specifications
- Other Name: Fuel Gauge Sending Unit
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1983-1986 Mercury Grand Marquis | 8 Cyl 5.0L | 4AT AOD
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Mercury Grand Marquis Fuel Tank Sender Assembly
Part Number: EOLY-9275-B
Product Specifications
- Other Name: Sender Assembly - Fuel Tank; Fuel Gauge Sending Unit
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1983-1989 Mercury Grand Marquis | 8 Cyl 5.0L | 4AT AOD
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Mercury Grand Marquis Fuel Tank Sender Assembly
Part Number: F2AZ-9275-B
Product Specifications
- Other Name: Sender Assembly - Fuel Tank ; Fuel Gauge Sending Unit; Fuel Gauge Sending Unit, Sending Unit
- Manufacturer Note: MECHANICAL INSTR. CLUSTER
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1992 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT, 4AT AOD, 4AT AODE
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Mercury Grand Marquis Fuel Tank Sender Assembly
Part Number: F3AZ-9275-B
Product Specifications
- Other Name: Sender Assembly - Fuel Tank ; Fuel Gauge Sending Unit; Fuel Gauge Sending Unit, Sending Unit
- Manufacturer Note: MECHANICAL INSTR. CLUSTER
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1993-1994 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT, 4AT AODE
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Mercury Grand Marquis Fuel Tank Sender Assembly
Part Number: F3AZ-9275-E
Product Specifications
- Other Name: Sender Assembly - Fuel Tank; Fuel Gauge Sending Unit, Sending Unit
- Manufacturer Note: MECHANICAL INSTR. CLUSTER
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1992 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT, 4AT AOD, 4AT AODE
View related parts
Mercury Grand Marquis Fuel Tank Sender Assembly
Part Number: F3AZ-9275-G
Product Specifications
- Other Name: Sender Assembly - Fuel Tank
- Manufacturer Note: Electronic instr. cluster, FROM 1/94
- Replaced by: F3VY-9275-B
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1994 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT, 4AT AODE
View related parts
Mercury Grand Marquis Sender Assembly
Part Number: F5AZ-9275-A
Product Specifications
- Other Name: Sender Assy; Fuel Gauge Sending Unit, Sending Unit
- Manufacturer Note: exc. Mexico
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1995-1997 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT, 4AT 4R70W, 4AT AODE

Mercury Grand Marquis Fuel Level Sensor Parts Questions & Experts Answers

Fuel Tank Sender Assembly
6W1Z-9A299-A
Q: How to check and replace the fuel level sending unit in a Mercury Grand Marquis?
A: Raise the vehicle and support it securely on jackstands. Disconnect the electrical connector for the fuel level sensor. Note: On 1998 and earlier models, disconnect the electrical connector at the pump. On 1999 and later models, the electrical connector is located in the harness and must be disconnected at the electrical connector away from the tank. Position the ohmmeter probes into the electrical connector and check the resistance. Use the 200-ohm scale on the ohmmeter. With the Fuel Tank completely full, the resistance should be about 170.0 ohms. With the fuel tank nearly empty, the resistance of the sensor should be about 11.0 ohms. If the readings are incorrect, replace the sensor. A more accurate check of the sensor can be made by removing it from the fuel tank and checking its resistance while manually operating the float arm. Remove the Fuel Pump/sensor assembly from the vehicle. Carefully angle the sensor out of the opening without damaging the fuel level float located at the bottom of the assembly. Remove the sensor electrical connector from the fuel pump assembly. Remove the screws that secure the sensor to the fuel pump assembly. Installation is the reverse of removal. If the float arm and float wire loop were damaged or bent during removal and installation, adjust the angle and travel distance. Be sure to install a new rubber gasket.

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