When I fill full gas tank and run till 3/4 of tunk is still full, my gas gauge becomes crazy - it jumps down (like no gas at all), the "low fuel" indicator lights up and you can hear a signal of "low gas". After a second all returns to the regular state. And this behavior continues every few second / minutes until the gas tank is 1/4 full.
I don't care a lot about fixing it, the only important thing to me - is to desaible the "low gas" sound, I am going crazy hearing it every few seconds or minutes :)
Thanks a lot!
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Gas as in gasoline or gas as in LPG gas? If its petrol, the fuel sender may be out of adjustment. (Usually means a new sender) If its LPG, the fuel stations are set to automatically shut off at 80% full. The gas tank will never actually be full to the brim but the gauge should be showing full if the gas nozzle keeps shutting off. Have a look on the LPG tank itself, they have a little gauge on them which shows how full it is. I have 2 tanks on my car , when "full" or when the pump shuts down, the tank gauges show just under full but the gauge on the cars dash shows full (2005 BA Ford)
yeah sound like your fuel injectors are clogged...I would first change and the fuel filters and go to wal mart and buy "sea foam" fuel injector cleaner its in a white and red metal can this stuff is awesome!...and add it too a full tank of gas run the vehicle till the gas tank is empty..if this doesn't fix it you will need to flush out the entire fuel system and flush out the fuel tank
You probably have a bad sending unit for the fuel level in the tank. this would cause the gauge to be erratic when the level is below 1/2 tank and the float is moving around much more than when full. The oil pressure gauge problem could be caused buy a loose wire connection or a faulty sending unit.
sounds like you have a restriction in the fuel inlet pipe,( maybe air locking) also your tank sender unit neads replacing to fix you gauge fault, or it maybe that it has something that is not alowingf it to move freely inside the tank, have a good look inside when low on fuel. through the hole where the sender is fitted.
2000 Olds Silhouette: plenty of gas in the tank but the gage will read full, 3/4 full, 1/2 full, and everywhere in between. Van runs fine. No other issues except the gage goes crazy and can't depend on what it says....
Depending on the severity of the problem, Sea Foam fuel additive can fix this (or at least lessen the crazy jumping around). It's available at NAPA. It worked on my Jimmy. However, in my case gauge started jumping around with less than 1/4 tank (worked fine when full).
check the grounds on your fuel tank sending unit,must drop the tank to do this. with the tank down,remove the ground and look at your fuel gauge it should read full or empty,if it does not it may be a sending unit