Sub tank fuel gauge problem???

[toy88]

Hello all...
I have a 1998 HZJ75 series trayback, my sub tank fuel tank works, the green light comes on etc but the gauge is always stuck on empty, is this an easy fix or a pain in the ass? Any help/info greatly appreciated

 

[PhrogsPhorever]

I'm kinda in the same boat. Mine is way off, with the tank full, it goes to about 1/3 tank. Check the wiring, grounds, etc is a good place to start.

After I check all the wiring, I will be dropping in a new fuel sender to see if that fixes the problem. If not, I guess I'll have to try and source a new/used gauge

 

[roscoFJ73]

Mine is doing the same as Toy88's cruiser. I plan to consult the FSM,it details how to diagnose the sender with a multi meter

 

[Aussie 25]

If you unplug the sender near the tank and find the yellow with a red tracer and put a 3.5.watt test light on the wire and ground the other end of the test light with the key on the light should glow and fuel gauge will go to around 3/4. If this works it may be the earth on back tank sender. If it doesnent work check it on the back of cluster and also check earth on cluster.
Good luck.

 

[toy88]

Thanks aussie 25 I'll give that a go today mate & I'll let ya know how I get on