Bikesure_adrianflux

Low fuel light not working - fixable?

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yourguitarhero

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Oct 15, 2021
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Location
Linlithgow
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S2r
I've got the plastic tank off of my S2R800 for winter to dry it out/shrink it maybe....

While I've got the furl pump parts out and on the workbench, is there any way to fix the fact I don't have a low fuel light?
I'm sure previous reading suggested that the whole (expensive) unit needs replaced but may be there is another way?
 
Maybe that'll work, but for the S2R the listing says 5524 1331a

Some have reported confusion when it comes to the "spare" wire. Connecting to a plastic fuel filter OR a metal filter means something. Can't remember what's what.

Also, have you tested that the wires through the flange are good? With continuity, not broken?
 
My M900 has the fuel light on permanently.

I think it's because the last owner may have laid the bike up with a nearly empty tank.

I have brimmed the tank with storage fuel and run the engine for 20 minutes but the light was still illuminated. Perhaps after a few weeks it will sort itself out or is that wishful thinking?

The fuel level sensor is one that looks like a dildo - pn 59210131A.

Thanks all.
 
ultegra said:
My M900 has the fuel light on permanently.

I think it's because the last owner may have laid the bike up with a nearly empty tank.

I have brimmed the tank with storage fuel and run the engine for 20 minutes but the light was still illuminated. Perhaps after a few weeks it will sort itself out or is that wishful thinking?

The fuel level sensor is one that looks like a dildo - pn 59210131A.

Thanks all.
Click to expand...
It's not unreasonable to think it may work again as that type use a float that may have gotten stuck.
 
ultegra said:
............
The fuel level sensor is one that looks like a dildo - pn 59210131A.
......
Click to expand...
I googled that and showed the picture to a woman waiting in line in front of me, in the coffee shop, asking if that's what a dildo looks like. Judging from the look in her face, I don't think so.
 
I’m surprised the Norwegian authorities allow you access to the interweb when you’re in custody Stopintime ? 😝😝😝
 
Purely a guess on testing.
Make a circuit with a 12v battery and a bulb similar to the one in the clocks, put the thermister inline. Then dip it in a cup of petrol, if it lights up then it works.

edit
I've been thinking about this.... it might not just be a make and break circuit, maybe the ecu measures the resistance change and converts a certain value to an on / off?
 
Last edited:
So....
I took the fuel pump and all its bits out of the tank over winter while I was drying it out/shrinking it.

I pulled the little thermistor out and checked its resistances at various temperatures, by putting it in a cup of warm water

The resistances changed over time - I didn't quite round to make a chart or anything.

Anyway, took the fuel bung down to the garage, Put my new lithium battery in and connected the fuel bung to the wiring (tank still back at home)

After about 2 minutes or so, my low fuel light came on! I wonder if there was just a bad connection somewhere....

Glad I didn't spend £40 buying one from Ducati!
 
I ended up buying a new sender for my m900. Works like a charm now.

Whilst I had it all apart, I Bilt Hamber Deox'ed the tank to bring it up like new inside. Bought a Lalizas 22mm Expanding Boat Rubber Drain Plug/Bung designed for nautical use to plug the sender hole while I did it.
 
ultegra said:
I ended up buying a new sender for my m900. Works like a charm now.

Whilst I had it all apart, I Bilt Hamber Deox'ed the tank to bring it up like new inside. Bought a Lalizas 22mm Expanding Boat Rubber Drain Plug/Bung designed for nautical use to plug the sender hole while I did it.
Click to expand...
Ah, my tank is plastic so it has its own "unique" issues,
 
I removed the plastic tank on my S4rt at the start of winter and left it in a warm dry room until spring to dry it out... it didn't make a blind bit of difference, I ended up slotting the holes in the bracket and lengthening the retaining clip threads to make it fit something like.
Ducati, turning riders into mechanics for 100 years ;-)
 
Mark64 said:
I removed the plastic tank on my S4rt at the start of winter and left it in a warm dry room until spring to dry it out... it didn't make a blind bit of difference, I ended up slotting the holes in the bracket and lengthening the retaining clip threads to make it fit something like.
Ducati, turning riders into mechanics for 100 years ;-)
Click to expand...

Same on Louise's 620
 
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