Fuel Gauge

[Fishin=Easy]

Fuel gauge wont work on crestliner. Well actually the gauge moves 1/4 in when the key is turned on. What does it respond to inside the tank, a float? I assume something is stuck but not sure what or how to go about fixing it. Any ideas or help appreciated.

thanks

[Fishin=Easy]

Fuel gauge wont work on 03 Crestliner. Well actually the gauge moves 1/4 in. when the key is turned on. What does it respond to inside the tank, a float? I assume something is stuck but not sure what or how to go about fixing it. Any ideas or help appreciated.

thanks

[Ralph Wiggum]

I replaced a gauge last year. If you pull the gauge out, there is an easy way to tell if the gauge is the problem.

There should be three connections on the back, S (sending unit), G (ground), I (ignition). If you wire the G to the negative terminal of the battery and the I to the positive, it should peg the needle one way. Next, keep the gauge hooked up as described, but add a jumper wire between the G and S. The needle should peg in the other direction.

If that works, you can rule out the gauge as the problem. There is a sending unit in your gas tank, but I am not familiar with troubleshooting them.

[boatfixer]

Yes there is a float inside the tank. you will have to get access to the top of the tank where the sending unit is. There will be a terminal in the center of the sending unit with a pink wire. the other wire is the ground (black) going to the the sender base. With the key turned to on, use a jumper wire from the pink to a safe ground. If the gauge pegs over, the problem is the sending unit. Or, maybe that $60 worth of gas only put it to a 1/4 tank.LOL

[marine_man]

Take a look at this thread:

fuel gauge lund pro guide not working for troubleshooting info. Even though it's a lund it's the same type of float and guage.

marine_man

[Valv]

To trouble shoot the wiring from sending unit to gauge, turn key on, use a jumper wire from black wire to pink wire on sending unit itself (on top of tank), gauge should read FULL, if it doesn't you have to check wiring between unit and gauge. If gauge checks OK, then it's the sending unit.

Either gauge or sending unit email me, I might be able to help.