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I just replaced my fuel pump in my 1999 bravada but the gas guage keeps jumping from empty to full them sticks on full

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Check electrical connections on fuel pump, it's sending unit shorting out. Make sure gasket is also in place and ground wire is tight

Posted on Jan 03, 2011

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Posted on Jan 02, 2017

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When my fuel tank is full the guage registers empty


Could be a problem with the gauge in the instrument cluster, or the wiring that goes back to the tank, or the sending unit in the tank.
The sending unit has a float much like your toilet which could stick or fail to move.

Jan 24, 2013 | 1994 Dodge Grand Caravan

1 Answer

Fuel guage always shows empty


It sounds as if the fuel tank sending unit is faulty. This is a small float connected to a variable resistor on the fuel pump/sending unit assembly. Unfortunately this assembly is fairly expensive (over $300) and the fuel tank may need to be removed to replace it.

Aug 23, 2012 | 1999 Isuzu Rodeo

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At the start of the engine, the fuel gauge reads empty. i know for sure the gas tank is filled up with a decent amount or its full. after afew miles, the gauge slowly moves to its proper reading. i know...


Most cars and truck nowdays show the tank empty when you start it. Then it slowly advances to the correct level of fuel in the tank. You can try and use some fuel additives like Gumout or Valvoline that clean the injectors and other fuel sytem parts. You can get a buildup of tarnish in these parts and this can cause slow readings. If this was the case it should improve after a few tank fulls of gas with the cleaners added. The guage could also slowly be going bad. The newer style guages are connected to the fuel pump and you will need to replace the whole unit if this goes out on you. Keep in mid that when the fuel pump quits, it quits, usually without much advance notice. If the car starts sputtering and does not have full power, this will hint at the fuel pump going bad. If your car has over 100,000 miles on it, you might want to think about preparing to change the fuel pump, these seem to want to go out shortly after 100,000 miles, but you can get lucky once in a while and it can last longer. Keeping your tank at least half full with clean gas is a big help, the gas keeps the fuel pump cool so it last longer!

Nov 16, 2010 | Chevrolet Blazer Cars & Trucks

1 Answer

Fuel guage/fuel empty light errors on 1999 chrysler sebring.


The fuel pump float is on its way out . Pretty soon your gonna need a new pump.

Jun 04, 2010 | 2000 Chrysler Sebring

1 Answer

S10 gas guage will not work


fuel floater inside of tank is broken. have to remove fuel pump

Mar 15, 2009 | 1999 Chevrolet S-10 Pickup

1 Answer

Gas guage is erratic


the fuel pump gage is sticking needs replacement/ its pretty easy if you need to do it yourself/ Please rate my response thankk you very much

Jan 31, 2009 | 1999 GMC Sierra

1 Answer

My 1999 Oldsmobile Alero Gas gauge and fuel system


well # 1 the full gauge when empty is a sign that your fuel pump is bad and that needs to be replaced the part about spitting the gas back out is probrobly a clog between the fuel door and the tank itself or their might be a vapor lock door that might be stuck shut so fuel cant get in im not 100%sure about that but im 100%sure that the fuel guage is the fuel pump being dead.

--THB--

Aug 22, 2008 | 1999 Oldsmobile Alero

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