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Lana O'conal Posted on Mar 01, 2015

FUEL SENDER UNIT. where do i find a replacement part or how is it fixable? thank u.

Fuel wont read on the gauge. sender unit maybe? just wondering where i could find a new part or how to fix the problem.

5 Related Answers

Anonymous

  • 259 Answers
  • Posted on Apr 08, 2009

SOURCE: Fuel has become erratic just floats around.

the sender should be on the top of the fuel tank hope this helps regards Jim

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Anonymous

  • 20 Answers
  • Posted on Apr 17, 2010

SOURCE: can I replace the fuel gauge sending unit without

no you have to lower the tank

Anonymous

  • 1056 Answers
  • Posted on May 24, 2011

SOURCE: I have a 2001 Mitsubishi

Check for loose connection first. Fuel senders going out all the way like that is very rare. You would get something like it would show empty when halfway full then go back up when it is almost empty and vice versa. Also make sure the new gauge is compatible since instrument clusters are electronically controlled now a days. One ways you can test a sending unit without getting into the fuel tank is to locate which wire it is going into the instrument cluster and measuring its resistance with an ohmmeter. The resistance should vary according to how much fuel is in the tank which determined by a float along with resistive winding of resistive wires (nichrome wires).

Anonymous

  • 2418 Answers
  • Posted on Sep 21, 2011

SOURCE: The fuel sender of my

1) SUNPRO FUEL LEVEL SENDER Universal; Part number, SUNCP7538, Manf. PN CP7538; $34.95 2) RCI FUEL SENDING UNIT Universal; Part number, R257060B, Manf. PN 7060B; $57.19 3) AUTOMETER FUEL LEVEL SENDING UNIT; Universal: Part Number, A483262, Manf. PN 3262, $41.90 4) DORMAN FUEL SENDING UNIT; Universal, part Number. RB7199, manf. PN 7-199, $36.07
Check out any of these universal fit sending units. They all have about the same ohms reading.

Anonymous

  • 14 Answers
  • Posted on Aug 06, 2012

SOURCE: Location of a fuel tank sender

The sending unit is attached to the fuel pump module in the fuel tank. check under the back seat or in the trunk under the carpet for access to the fuel pump

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Hi,sender unit in fuel tank falty,find the tanktake the two wires off the sender unit join together switch ignition on,now look at fuel gauge now it should read full,if so replace sender unit.
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The fuel level indicating system is a magnetic type system, which consists of the sending unit located in the fuel tank, an anti-slosh module located on the back of the instrument cluster, and a fuel gauge located in the instrument cluster. The sending unit changes resistance according to the level of fuel in the fuel tank, which varies the current flow through the gauge.The pointer position varies proportionately to the current flow. In this system, the sending unit resistance is low (22 ohms) when the fuel level is low and high( 145 ohms) when the fuel level is high. The pointer of the magnetic gauge remains in position when the ignition is turned to the Off position. On some models, an anti-slosh module is used to dampen out fluctuating fuel signals from the sender. Some vehicles are equipped with a low fuel warning indicator. The anti-slosh module will also actuate the low fuel indicator when the fuel level in the tank reaches 1/16 to 1/8 full.


Do your other gauges/warning indicators work properly with the ignition on? If not, check for power at the fuse panel/fuses.

If they do then partially remove your cluster with connector still installed and check for voltage at cluster connector and gauge. Check continuity of cluster and gauge for ground.

Sometimes the anti-slosh module (if installed) goes bad in the Grand Marquis but not likely.

Sender troubleshooting:
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    1. Disconnect wiring connector at sender unit, then connect resistor between gauge lead and a suitable ground.
    2. Turn ignition switch to On position.
    3. With 145 ohm resistor, the gauge pointer should contact the Full mark.
    4. With 22 ohm resistor, the gauge pointer should contact the Empty mark.
  1. Perform test with fuel sender of known quality as follows:
    1. Turn ignition to Off position.
    2. Disconnect wiring connector from sender and connect it to test sender.
    3. Move float rod away from fuel filter against Full stop position. Wait approximately 30 seconds, then turn ignition switch to On position. The gauge should read on or above the Full mark.
    4. Move float rod toward fuel filter against Empty stop position. Turn ignition switch to Off position. Wait approximately 30 seconds, then turn ignition switch to On position. The gauge should read on or below the Empty mark. If gauge works properly replace sender, which involves dropping fuel tank.
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