Why is my gas gauge not working after fuel pump replacement?
When you were installing the fuel pump module back into the fuel tank you may have inadvertently bent or damaged the the fuel gauge sending unit. If the sending unit arm got bent when installing it then it will bind up on the metal anti slosh plates inside the fuel tank.
Where is the fuel gauge sensor?
The fuel gauge sender is found inside the fuel tank on your vehicle. It will be attached directly to the fuel pump. You will locate the sender because it has a base that contains a float and rod attached to it.
How do you diagnose a gas gauge?
Turn on the engine’s ignition and probe with a multimeter between the ground and the positive terminal on the back of the gauge; it should be marked with a “+” or an “I.” If there is no voltage then the fault is in the ignition circuit—and the gauge is probably good.
How do I know if my gauges are bad?
What causes a gas gauge to stop working?
The most common cause of gas gauge trouble is a poor ground, especially at the tank sender unit. It is important that all wiring connections are clean and tight, and free of dirt and corrosion.
How do I know if my fuel gauge is empty?
Check by using a jumper wire to ground the tank unit terminal on the gauge (the one not connected to the ignition). If the gauge now reads empty or below, the problem is in the wire leading to the tank (or its connection to the gauge).
What to do if your dash gauge is not working?
To check further, connect a jumper wire between the ignition switch and the dash gauge. If the gauge now works, replace the defective wiring between the gauge and the ignition switch. If the gauge needle remains stuck in one place, try turning the ignition switch off and on several times in succession.
Why does the dash gauge read empty when the tank is full?
Also check for a poor ground at dash gauge and the sending unit by using a jumper wire. If the dash gauge reads empty when the tank is actually half full or greater, the wiring between the dash gauge and the tank sending unit is defective.