Genuine Lincoln Town Car Fuel Level Sensor

Lincoln Town Car Fuel Level Sensor Parts Questions & Experts Answers

• Fuel Tank Sender Assembly
  FOVY-9275-A
  Q: How to check and replace the fuel level sending unit on Lincoln Town Car carbureted engine?

  A: To check and replace the fuel level sensor, first, raise and secure the vehicle on jackstands. For models with an analog gauge, disconnect the electrical connector for the fuel level sensor and turn on the ignition key to check the gauge operation. Use a test light to find the terminal with battery voltage and ground the terminal without voltage to test the gauge response. For models with a digital instrument cluster, perform a similar test using a voltmeter or test light and a 15-ohm resistor. Remove the resistor and use a 150-ohm resistor to check the gauge response. For a more accurate check, remove the sensor from the Fuel Tank and check its resistance manually operating the float arm. To replace the sensor, remove the fuel tank from the vehicle if necessary, and carefully remove the sensor, disconnect the electrical connector, and install the new unit using a new O-ring between the tank and the sensor cover.
• Sender Assembly
  F5AZ-9275-A
  Q: How to check and replace the fuel level sending unit on Lincoln Town Car fuel-injected engine?

  A: To perform the fuel pressure test, you will need a fuel pressure gauge and adapter set. Before proceeding, relieve the fuel system pressure and lay a shop towel over any fuel connection to absorb residual fuel. Start the preliminary inspection by checking if the fuel system delivers the proper amount of fuel. Listen for a whirring sound at the fuel filler opening when turning the ignition key to the On position. If there's no sound, check the Fuel Pump fuse, relay, and circuit. Check for battery voltage to the fuel pump relay connector and power relay connector. If there's no voltage, inspect the fuses and wiring circuit. For the operating pressure check, attach the fuel pressure gauge to the test port and activate the fuel pump without starting the engine. Note the fuel pressure and start the engine to measure the pressure while idling. Detach the vacuum hose from the fuel pressure regulator to check for an immediate increase in pressure. If pressure is too high, inspect for obstructions or replace the fuel pressure regulator. If pressure is low, check the fuel filter and hoses, and if needed, replace the fuel pressure regulator or check the fuel pump. For the fuel pump output pressure check (dead-head pressure), use a fuel pressure gauge with a bleeder valve to relieve pressure after the test. Attach the gauge directly to the fuel feed line at the fuel tank and bridge the terminals on the Diagnostic Test connector to activate the fuel pump. Note the pressure reading and compare it after five minutes. If the hold pressure is less than specified, check the fuel line for leaks or replace the fuel pump.