Inoperable fuel gauge

[Matey]

My boat was brought in for its 100 hour maintenance. Since then I cannot get a fuel gauge reading.
any ideas where to begin troubleshooting.?
all else seems fine at this time.

 

[Hookup1]

Take it back to the guys that broke it! I call them FIT’s - Failure Induced by Technician. Probably touched and broke something.

 

[seasick]

More info please Model boat? Single or dual tank?
What service did they perform?
What does the gauge read, empty, full or is it blank? What type gauge do you have, analog digital etc?.

 

[Matey]

It is a 2020 235 Freedom.
it has one fuel tank that holds 115 gallons.
it shows ———— on the digital readout,
and indicates red on the gauge readout on the boat screen. The completed a 100 hour maintenance on a 300 Yamaha.

 

[Matey]

Thank you for your interest in this matter

 

[Matey]

More info please Model boat? Single or dual tank?
What service did they perform?
What does the gauge read, empty, full or is it blank? What type gauge do you have, analog digital etc?.

Thank you for your interest in this matter.

 

[seasick]

Is the 'Boat Screen" the multi-function Command Link system monitor (6Y9 I think)?
It sounds like the sender signal is not present. if you have the system display, it may need to be reprogrammed. ( But why would it have changed???)
I agree that you should go back to the shop that did the service,.

 

[glacierbaze]

How long ago was the service done?

 

[Matey]

April 5, 2022 (service)
I noticed it first time in the water after the service which was 6/6:22
I had it on a wash rack a couple of times in between but didn’t notice it not registering fuel.

 

[Dear Prudence 2.0]

I am having the same issue on our 2018 Freedom 235, 300 single Yamaha with Command Link Plus gauge. The gauge worked last fall when the boat was put up, but hasn’t worked since we put the boat In. Marina tech looked at it. Sending unit reading ~30 ohms with full tank, so don’t think it is a bad sending unit. He is suggesting a possible ground issue, but said there are so many possible places on the boat a ground could be bad… The marina is passing on further trouble shooting.
Thanks for any suggestions.

 

[seasick]

I am having the same issue on our 2018 Freedom 235, 300 single Yamaha with Command Link Plus gauge. The gauge worked last fall when the boat was put up, but hasn’t worked since we put the boat In. Marina tech looked at it. Sending unit reading ~30 ohms with full tank, so don’t think it is a bad sending unit. He is suggesting a possible ground issue, but said there are so many possible places on the boat a ground could be bad… The marina is passing on further trouble shooting.
Thanks for any suggestions.

30 ohms is correct for a full tank. If you open the deck access plats at the rear of the fuel tank, you will see the tank and sender flange. There will be a pink wire attached to the sender terminal/ Pull it off and your gauge should read empty ( it may take a few seconds). If the gauge does change then your wiring is fine including the tank ground. If the gauge doesn't drop, you probably have a wire that is accidentally shorted to ground or the gauge is bad. The gauge if the system monitor type may be set up incorrectly though .
Can you post a picture of your gauge?

 

[Dear Prudence 2.0]

30 ohms is correct for a full tank. If you open the deck access plats at the rear of the fuel tank, you will see the tank and sender flange. There will be a pink wire attached to the sender terminal/ Pull it off and your gauge should read empty ( it may take a few seconds). If the gauge does change then your wiring is fine including the tank ground. If the gauge doesn't drop, you probably have a wire that is accidentally shorted to ground or the gauge is bad. The gauge if the system monitor type may be set up incorrectly though .
Can you post a picture of your gauge?

I’ll try and get a pic of the gauge. The problem is no reading on the fuel level at all. I tried disconnecting the pink (power)from the sending unit. Nothing changes.

 

[Matey]

The response I received from the service manager was that it was a separated wire.
He didn’t inform me as to which wire or where it was located. The malfunction occurred as a result of the 100 hour maintenance service. It was repaired by them.

 

[Hookup1]

I see you got it fixed. Typical FIT.

A little late but for future reference. Try this...

 

[5-Salt]

I see you got it fixed. Typical FIT.

A little late but for future reference. Try this...

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Most helpful!!
This week I will be installing GW OEM Aux Tank not originally installed.

Will take any other related multigauge wiring diagrams as recently replaced originals and trim/tilt indicator displaying inaccurately, and boat speed not displaying

Thanks!!