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Using truck to pull leg brush. truck died acting as if it had no gas...gauge was marking 1/4 of tank before and now reads empty...dumped 5 gallons in it and still nothing...any suggestions??
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check the calibration of the sender unit as may actually be on empty. Find out the exact capacity of the tank and add a known amount of fuel and see where the gauge reads. For example if the tank is 60 ltrs or 20 gallons add 5 gallons and see where the gauge reads. 5 gallons in 20 gallons should read 1/4 or in your case after the engine stops should read 1/4 full. If it reads 1/2 then the sender is out.
Sounds like at 1/4 reading,the actual reading of the fuel should be empty.Your gauge sending unit in the tank is most likely defective.Many are on these.
Is this a flex fuel vehicle. If so, call the dealership and ask the parts dept. if there is a gauge module (perhaps behind the instrument cluster). This may be the culprit and needs to be replaced.
from what you are describing you have two(2) different problems 1- the wacky gauge- its acting like a grounding issue- wires are crushed/smashed on tank connector 2- not filling - venting issue- vent line to top of tank pinched 3 solution- run tank down to 1/4 or less and DROP tank down to inspect wires and hoses- sounds like at some point in time the tank took a hit and wedged itself upwards against the underside,pinched the vent line so there is too much pressure in tank and also crushing the wires/plug causing the erratic readings(worse with less weight as the tank moves more) if unsure of how to do this- you can get a manual such as a HAYES book at auto parts story- good luck
The 99 expedition comes with a 26 gal tank as standard equip. and there is an optional 30 gal available. I suspect the gas pump you used is not accurate, and needs to be recalibrated. I think it's just a coincidence that the gauge is acting up now. Hopefully I'm wrong, and by some miracle you actually are now getting 300 miles on a half tank of gas! You may have a bad sending unit, this would result in inaccurate fuel tank readings.
I also have a 04 with a 1.8L. same problem. I took the fuel regulator off. It is a black box behind the rear tire under car. It only has 2 bolts to take off. After that there is a couple of vent hoses from the tank going to this box. Unplug them and 1 electrical connection. The electrical connection and one vent is connected to a T connection on the box that you can unplug by twisting on the T. Take that T off and look inside where you unplugged the hose on this T. There is a spring and a little plunger inside this tube. The plunger gets stuck. I took a little screw driver and some PB blaster and worked that plunger back and forth a couple dozen times and it unfroze. Put it back together gassed up just fine. I did not look but I was told regulator can be replaced for 200$. But a can of blaster is cheaper.
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