Fuel Meter Dash - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #1 of 7 (permalink) Old 10-02-2020, 06:21 PM Thread Starter
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Fuel Meter Dash

Hi, I have a problem with the fuel gauge, all the bars on the display are flashing, whether it is full or empty. What could it be? Thank you
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post #2 of 7 (permalink) Old 10-04-2020, 07:37 AM
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Not come across this one before. Try removing the connectors under the tank and give them a squirt with contact cleaner.
You could also try disconnecting the battery for a few minutes and reconnecting.
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post #3 of 7 (permalink) Old 10-04-2020, 08:18 AM
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Model and year are what? Flashing fuel gage is one of several indications of a spider bite. Have you noticed any other electrical anomalies?

See post #2 of this thread -> https://www.fjrowners.com/forums/9-f...ome-roost.html

Russ
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post #4 of 7 (permalink) Old 10-04-2020, 09:14 AM
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Though Iíve been lucky & havenít needed it for my 14a I gotta say that thread was a great writeup Russ, good job !

Steve P
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Ride more,, worry less !
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post #5 of 7 (permalink) Old 10-25-2020, 08:46 PM
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I'm having the same problem with my (new to me) 2010. Just got it and the former owner let it sit for about 5 years.... Siphoned the the old gas out, put some new in and fired it up with a new battery. Since then the fluids have been changed and it runs like a top, but the fuel gauge does exactly what Dario states. I've been using the trip meter to monitor tank capacity - like back in my Seca-II days. =P Wondering if the float arm got bent or if the sending unit got corroded. Any thoughts are appreciated.
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post #6 of 7 (permalink) Old 10-25-2020, 09:26 PM
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Quote:
Originally Posted by jrwfjr View Post
I'm having the same problem with my (new to me) 2010. Just got it and the former owner let it sit for about 5 years.... Siphoned the the old gas out, put some new in and fired it up with a new battery. Since then the fluids have been changed and it runs like a top, but the fuel gauge does exactly what Dario states. I've been using the trip meter to monitor tank capacity - like back in my Seca-II days. =P Wondering if the float arm got bent or if the sending unit got corroded. Any thoughts are appreciated.
Possible.. or better yet the float could be ... not floating . could be sunk and therefore sending the wrong signal to the gauge
you could lift the tank and see if power and ground are at the wires
and if you really want to go all in .. remove the tank .remove the sending nit .. hook up you ohm meter and lift and lower the float arm and see if the resistance changes ( I am guessing no) ..in which case you need a new sender.
if yes then you need to check the other end of the wires leading to the sender ( as close to the gauge as possible ) if no change but there is at the tank .. it is wires ..if change .. might be the dash ( unless this reading is controlled by the ECU .. in which case you need to check it there as well )..well that is my lesson on how to hunt down an test a sensor ,,with A TEST LIGHT A MULTIMETER AND A LITTLE KNOWLEDGE YOU CAN RULE THE WORLD ....OR SHORT IT OUT
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post #7 of 7 (permalink) Old 10-26-2020, 12:34 AM
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I don't think you can get a sending unit separately, part of complete fuel pump assembly... hope you can revive it, fix a connection, etc.
Note, two connectors under the tank have black ground wires, which are shared at a junction splice somewhere upstream... in case one came undone somehow I dunno how. But your trusty multimeter will let you know if the connection is good or not.
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