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The fuel gauge and DTE indicator are inaccurate and swing from full to empty continuously.TheDTE will drop 150 kms over only 10 ks or will pick up a hundred in only a short distance.I have been informed that i need to change the fuel pump at great expense is there an alternative. vehicle is a falcon au111

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You most likely have a bad fuel pump sending unit,located on the side of the fuel pump,inside the fuel tank,unfortunatlly,the fuel pump will need to be purchased to repair this issue.the fuel pump sending unit is mounted on the side of your fuel pump.i would search for a used fuel pump.but a used pump,is a used pump,the pump will be guaranteed for 30days,but is the labor also? good question to ask yourself! thank you for choosing fixya,com

Posted on Apr 08, 2011

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I just purchased a 2016 Mazda 3 Touring. I was informed that I would get a combined fuel of 5.7litre to 100 kms and also the tank is 51 litre. . Only got 390 kms to empty took only 40.5 litres! 10 l


the fuel consumption figure is what mazda get in a factory controlled test operation and is only an indication of what can be expected with careful driving
they have no control over driving habits or traffic conditions and drive speeds as the variation is too great to even talk about
by the calculations you are getting 5.6 liters per 100 klms so where is the problem
to get exact figures for your driving habits
you go from tank full to tank full and divide that into the figure set on the trip meter when filled the first tank, not what you have calcuated

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Michael, take vehicle into a good shop and have scanned to see what diagnostic codes are in computer, have shop estimate repair.
Issue with fuel gage could be bad wire/plug or faulty sending unit.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

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1 Answer

CO appears on fuel gauge


On your dash the letters CO or CS show in the Distance to Empty (DTE) information center. there is a problem with the fuel level indicating system. Most likely the Fuel level sensor has failed, or is not completely as accurate as it needs to be for the DTE function to work. The fuel level sensor would most likely need replacing. Replacing the sending unit requires removing the fuel tank. If you choose to repair this issue i recommend replacing the fuel pump and strainer while you are there.

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Suzuki virara v6 ex sender earth wire


we, usa only have Grand vitara's in 05.???
our car if you scan it will show intermittant sender DTC errors.
P0464

the fsm BOOK cover these tests.
you unplug the connector, shown.
you attach and DMM , set to ohms.
about 2 to 150 ohms is range. low is full, 150 empty.
on mine, 32 ohms is 1/2 full. but as always, RTM
read the manual. the FSM.
or at alldata.com

the book shows what resistance for the sender equals 1/2 full
easy huh, a $10 meter and bam, the answer , no guessing
and draining a tank of fuel and wasted 5hrs labor +

pull the connector to sender
turn on key , guage must go to empty.
if not the wiring or gauge (rare) are bad.
if yes, the sender is hosed. (or jammed)


https://suzukipitstopplus.com/Products/1145-2004-vitara-service-manual.aspx

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I have a 1992 Mercury Grand Marquis Ls with a fuel gauge that does not work (gauge may be reversed)??? help please.


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:
  1. Perform test with resistors as follows:
    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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1 Answer

With full tank of gas the gauge go's full for a couple days then around half a tank the gauge reads empty 1993 voyager


It sounds like the sending unit has a dead spot on it causing it to read inaccurately. The tank would have to be dropped and the sending unit replaced. Check out this page and illustration to better understand what's going on. "How a fuel gauge works"

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i would say its the gauge sender,but the problem is its inside the fuel tank,so it looks like a job for the garage.adrian,,,,,,

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Remove the fuel selector switch from the dash, you can test it with a simple $8.00 swing volt/ohm meter. Its probably bad. Note there is a valve switch under the drivers door jam that selects witch fuel line to use, that is the second place to look. Hope it works..

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