fuel gauge

[roger100]

hi having problem with fuel gauge in a stingray 185 reads 3/4 full when empty
eney solutions to the problem

 

[metriccrescentwrench]

Re: fuel gauge

You're gonna' have to get your hands dirty and do a bit of troubleshooting. You could have a problem with the fuel sender, the gauge itself, or the wiring between the two. You didn't say if the gauge works above 3/4, or if it's just stuck at that point.

The most common problem is the fuel sender. You'll need to remove it from your tank and measure the resistance as it moves from full to empty, resistance should vary smoothly along the entire range. When full the sender resistance should be 33 Ohms, at 1/2 it should be 103 Ohms, and at empty it should be 240 Ohms.

To test the gauge you can connect either a potentiometer (variable resistor) or individual resistors of the appropriate value between the S and G terminals with power turned on and see if you get the correct readings.

 

[roger100]

Re: fuel gauge

. Hi, thanks for help, when ignition is turned on it reads 3/4,when key off reads zero but tank is empty? Thanks Roger100

You're gonna' have to get your hands dirty and do a bit of troubleshooting. You could have a problem with the fuel sender, the gauge itself, or the wiring between the two. You didn't say if the gauge works above 3/4, or if it's just stuck at that point.

The most common problem is the fuel sender. You'll need to remove it from your tank and measure the resistance as it moves from full to empty, resistance should vary smoothly along the entire range. When full the sender resistance should be 33 Ohms, at 1/2 it should be 103 Ohms, and at empty it should be 240 Ohms.

To test the gauge you can connect either a potentiometer (variable resistor) or individual resistors of the appropriate value between the S and G terminals with power turned on and see if you get the correct readings.

 

[Don S]

Re: fuel gauge

From the sticky at the top of this the electrical forum.

Troubleshooting an inoperative fuel gauge.