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Re: Fuel guage goes to empty as i turn key to start...
Sounds like you have a bad ignition switch, not the lock cylinder but the switch itself. Electrical power should continue to go to the gauges and to the ignition module even with the key in the Start position.
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sounds like a loose connection somewhere could be ground connection or corrosion problem check connections and clean if that does not solve could be sending unit getting ready to fail replace as nessary
Test for ground and power at your fuel pump connector. Also, the sending units sometimes come without the pump itself wired in. You have to actually splice in connections sometimes. If you get stuck, dropping the tank again and removing the sending unit to inspect could be your next step.
you probably have a bad fuel level sensor in the fuel tank.you will have to remove the fuel tank to replace the sensor.the contacts on the sensor will break causing the fuel gauge to be inacurate.you can buy the sensor without having to buy the whole fuel pump assembly.
Starter or ingition switch problem. Let me guess, you live in a cold region? If yes, then I'm betting money on the starter. The cold does a number on starters. The colder it gets the more likely they go out. Lol, happened to my friends truck Tuesday and mine this morning. That's what we get for living in -10 degree weather right?
the fuel pump is inside the tank and i have seen trucks that the pump wiring harnes inside goes bad! when you turn the key on you should hear the pump running,if not i bet it is the wiring inside
chevy and gmc trucks have an on going problem with this,turn the key on,and get a rubber mallot or a hammer and hit the bottom of the fuel tank a couple of times,this will unstick something in the fuel pump/sending unit.
When you hook the pressure test guage to shrader valve on fuel rail what it reads is what the pressure is from pump, around 60 p.s.i. all you need to do is hook up the guage and turn on key, you do not have to turn engine over, and if pump is good it will shoot up to 58 or 60 right now.
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