GTX fuel gauge issues

[24noley24]

I have 2 GTX millineum editions and the fuel level gauges are not working on either one. I just recently bought them and the original owner said he didn't have any issues. I have checked the fuse in the back electrical box and all the fuses on the module up front. All fuses checked good.

Does anyone have any suggestions or tips. I am a new owner so I don't know much about them. Also don't want to take the to shop if I can avoid it. (Expensive)

Thanks,

 

[kustomkarl]

Welcome to the seadoo forum 24noley24. Here is the proceedure to checking out the sending unit in the fuel tank;
You need to check the Pink and Pink/Black wire coming out of the baffle tube in the gas tank. The sending unit works off resistance. Pull the plug apart at the tank, and use an ohm meter to check for resistance between the two pink wires. The resistance will be different depending on how much fuel is in the fuel tank. If you get no resistance, remove the clamps off the sender, and pull the sending unit out of the fuel tank. Check the magnets on the float in the sending unit. To get to the float out, pop the bottom off and look for the 4 magnets on the float. If they are missing use a strong magnet to get them out of the tank bottom. If they are dirty clean them and re-insert it back in the baffle tube and check the wires again to check for readings of resistance depending on where the float is in the baffle tube. If still no reading of resistance replace the sender. If you get readings, check continuity of wiring to gauge. If all wiring checks out ok the gauge is bad. Keep me posted on your progress.

Karl

 

[24noley24]

I checked the resistance and found an open circuit (infinite resistance). I pulled the fuel sending unit out of the tank. I found one float with 2 small round magnet. The bottom magnet was covered in what appeared to metallic gunk.It also had the shiney part of the magnet flaking off. I cleaned both magnets and reinstalled assembly into tank. I still didn't get any resistance readings. Do I replace just the floating assembly with the magnets or do I need to replace the whole assembly. I noticed there is a printed circuit board in the tube. Could that be bad ? Besides the magnets being dirty the assembly as a whole was pretty clean.
Can you recommend the best online place to buy the parts. There are so many........

Thank you very much for your help......Good Forum

 

[nswillin]

There is a little tiny fuse on the circuit board that will go bad. There is a way to fix that but it seems like a huge pain. I just bought a used one off ebay and it worked great. I think it was like $40 or $50. I think their about 150-200 new.

 

[kustomkarl]

If the magnets are looking bad it might be time for a replacement of the whole unit. I don't think there is a replacement board that is availiable...I believe that its an assembly thing...

Karl