Fuel Light coming on with full tank


Information and questions on GL1200 Goldwings (1984-1987)
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rrod1393
Posts: 56
Joined: Wed Aug 22, 2018 3:56 pm
Location: Freehold, NJ
Motorcycle: 1985 GL1200 Interstate
2000 Kawasaki Vulcan 1500 Classic

Fuel Light coming on with full tank

Post by rrod1393 »



So just got my GL1200 on the road after it has been sitting for over five years outside from the PO. I did a complete service on the bike and its up and running well. I am enjoying it. The issues I was having while I took it for its test ride was the fuel light was flashing on and off intermittently with a full tank of gas. The gauge reads full while the light was flashing. I am assuming the light means low fuel. So I continued to ride for about 40 miles. Today I jumped on the bike to go to work, turned on the ignition and the fuel light did not turn on during its "lamp test." It did not flash once on the ride in either. Is this a loose connection at the sending unit? If so, wouldn't my fuel gauge be out of wack as well?



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WingAdmin
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Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (sold)
1998 XV250 Virago (sold)
2012 Suzuki Burgman 400 (wife's!)
2007 Aspen Sentry Trailer

Re: Fuel Light coming on with full tank

Post by WingAdmin »

rrod1393 wrote:
Tue Sep 18, 2018 5:04 pm
So just got my GL1200 on the road after it has been sitting for over five years outside from the PO. I did a complete service on the bike and its up and running well. I am enjoying it. The issues I was having while I took it for its test ride was the fuel light was flashing on and off intermittently with a full tank of gas. The gauge reads full while the light was flashing. I am assuming the light means low fuel. So I continued to ride for about 40 miles. Today I jumped on the bike to go to work, turned on the ignition and the fuel light did not turn on during its "lamp test." It did not flash once on the ride in either. Is this a loose connection at the sending unit? If so, wouldn't my fuel gauge be out of wack as well?
The fuel level sensor and the low fuel sensor are two separate things, feeding two different sensors over two different wires.

If you have a short on the wire going to the low fuel sensor, it will turn the light on.

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LeMaitre
Posts: 104
Joined: Mon Apr 10, 2017 8:03 pm
Location: NE Minnesota
Motorcycle: 1985 GL1200A Aspencade
1975 CB550F Super Sport

Re: Fuel Light coming on with full tank

Post by LeMaitre »

Also double check your grounds. Had strange behavior of my gauge caused by a loose ground at the battery.

-Mark
1985 GL1200A, MN SS1K
1975 CB550F, Lake Superior SS1K, 45-90 SS1K, All in Yooper SS1K

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