Question about 2002 Mercury Grand Marquis

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Fuel level sensor is malfuctioning what should i do?

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If its over 100k its best to replace the whole fuel pump assembly with oem or airtex and try not to run the tank below 1/4 as the pump uses the fuel to keep itself cool

Posted on May 10, 2014

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Posted on Jan 02, 2017

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07 Hyundai Santa Fe fuel sensor code 2068 circuit B high. Would that be the sensor on the right side?


P0463 Hyundai - Fuel Level Sensor 'A' Circuit High Input
P0464 Hyundai - Fuel Level Sensor 'A' Circuit Intermittent
P0463 Hyundai - Fuel Level Sensor 'B' Circuit High Input
Possible causes
- Faulty fuel level sensor
- Fuel level sensor harness is open or shorted
- Fuel level sensor circuit poor electrical connection
The fuel level sensor of Hyundai Santa Fe is mounted in the fuel level sensor unit. The sensor detects a fuel level in the fuel tank and transmits a signal to the Engine Control Module (ECM). The fuel level sensor consists of two parts, one is mechanical float and the other side is variable resistor. The fuel level sensor output voltage changes depending on the movement of the fuel mechanical float.

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P0462 is Fuel Level Sensor Circuit Low Voltage.
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- Faulty fuel level sensor in fuel tank (most common cause) P0463 Description The fuel level sensor is mounted in the fuel level sensor unit. The sensor detects a fuel level in the fuel tank and transmits a signal to the Engine Control Module (ECM). The fuel level sensor consists of two parts, one is mechanical float and the other side is variable resistor. The fuel level sensor output voltage changes depending on the movement of the fuel mechanical float

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P0464


P0464 - Fuel Level Sensor Circuit Intermittent
An intermittent low voltage is sent from the sensor is sent to ECM.

The fuel level sensor is mounted in the fuel level sensor unit. The sensor detects a fuel level in the fuel tank and transmits a signal to the ECM or PCM.

It consists of two parts, one is mechanical float and the other side is variable resistor. Fuel level sensor output voltage changes depending on the movement of the fuel mechanical float.

Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)

Possible causes
- Fuel level sersor circuit harness or connectors is open or shorted
- Fuel level sensor may be faulty
Possible solution
Replaced fuel level sensor.


Check it and keep us news.

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fuel level sensor is part of the fule pump assembly. code is telling you sensor is malfuctioning. do gauges work? if yes i would leave problem alone till you need a fuel pump

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I assume you're talking about the sensor that controls the gauge to tell you how much fuel is left... if so, that sensor is located in the gas tank. It can be quite costly / time consuming to have it replaced as you can't fix the bad sensor... You could also just reset your tripmeter every time you fill up and estimate how much fuel you have left based on what the tripmeter says...

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