1986 honda goldwing gl1200 fuel pump relay location


Information and questions on GL1200 Goldwings (1984-1987)
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jtgold
Posts: 3
Joined: Sat Jul 28, 2012 12:19 pm
Location: Joshua Tree, California
Motorcycle: 1986 Honda 1200 interstate

1986 honda goldwing gl1200 fuel pump relay location

Postby jtgold » Sun Nov 04, 2012 10:05 am



This bike has been sitting two years cleaned out old gas and it ran but it has a gummed up carburetor. A few weeks went buy and its not getting fuel so I took out the fuel pump tested it and it works. put it back in the bike and it does not work so thinking I need to test the fuel pump relay but don't know the location. Super clean bike with only 30000. miles on it. Please help, I don't have a book for it. Thank you for your help and time! S
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virgilmobile
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Motorcycle: 1988 GL1500 I
Previously owned
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84 GL 1200 I

Re: 1986 honda goldwing gl1200 fuel pump relay location

Postby virgilmobile » Sun Nov 04, 2012 10:19 am

The pump relay is in front of the ignition coils.it is ignition coil driven and only has power when the ignition is firing and there is a load by the pump.It's not a on/off relay.

jtgold
Posts: 3
Joined: Sat Jul 28, 2012 12:19 pm
Location: Joshua Tree, California
Motorcycle: 1986 Honda 1200 interstate

Re: 1986 honda goldwing gl1200 fuel pump relay location

Postby jtgold » Mon Nov 05, 2012 11:49 am

Thank you for the help. But I don't know what I am looking at or how to get to it. I will check out the bike when I get over to the shop. Is there a step by step with pictures, that anyone knows about on how to fix this?
Thank you,Scott
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virgilmobile
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Joined: Sun Sep 19, 2010 5:39 pm
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81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: 1986 honda goldwing gl1200 fuel pump relay location

Postby virgilmobile » Mon Nov 05, 2012 3:21 pm

There is testing,but if the fuel relay will not power the pump it is just replaced.
Be careful in the diagnosis.This is NOT a typical relay.
It is a electronic pump control circuit and acts very different from a on/off relay.
My 84 has the same pulse type pump and I did measure the system when I had the fairing off.
I repaired my pump and applied 12 volts direct to it and verified it pumped fuel and shut off(stopped pulsing) when it reached 3.5 psi.
After hooking it back to the bike,the "relay" would only provide power while the bike was running and then only when the pump cycled.There was no volts on the line if the pump was in it's off cycle.

So while idling,I would see my test light attached to the pump just flash for 1/2 second every 8 seconds or so.

jtgold
Posts: 3
Joined: Sat Jul 28, 2012 12:19 pm
Location: Joshua Tree, California
Motorcycle: 1986 Honda 1200 interstate

Re: 1986 honda goldwing gl1200 fuel pump relay location

Postby jtgold » Tue Nov 06, 2012 10:34 am

Thank you virgilmobile for the new information and picture. I think if I have time today or tomorrow I can get to the relay and test it. Again, thank you for taking the time to help me. Scott
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virgilmobile
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Joined: Sun Sep 19, 2010 5:39 pm
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82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: 1986 honda goldwing gl1200 fuel pump relay location

Postby virgilmobile » Tue Nov 06, 2012 12:50 pm

By the book testing...apply power to the pump and verify it works...check for 12 volts going to the relay...check continuity from the relay to the pump.
Remember the relay is triggered from one of the ignition coils,ergo...no spark..no pump power,and only power when the pump cycles.

Mark1537
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Motorcycle: 1984 GL1200A Aspencade

Re: 1986 honda goldwing gl1200 fuel pump relay location

Postby Mark1537 » Fri Aug 28, 2015 3:01 pm

virgilmobile wrote:By the book testing...apply power to the pump and verify it works...check for 12 volts going to the relay...check continuity from the relay to the pump.
Remember the relay is triggered from one of the ignition coils,ergo...no spark..no pump power,and only power when the pump cycles.


I'm having the opposite issue, my pump continues to pump to the point of flooding the carbs. As soon as the ignition is turned on, before starting the engine, the pump is pumping. If I kill the petcock, and start my bike, it will run fantastic, as soon as I open the petcock it floods out after a few seconds. The carbs are freshly rebuilt using Randaak's kit. Oh, and once in a while it won't flood. I've started turning off the petcock after every ride, and letting it drain the carbs a bit. When I turn the ignition on, the pump starts going crazy, I open the petcock and fire up the bike and, sometimes it runs amazingly, others it floods out. Relay issue? Stuck float? I replaced the float pins, and gave them extra attention. They looked great so I'm disinclined to believe that it's the floats. But I need expert opinions.

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virgilmobile
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Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
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78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: 1986 honda goldwing gl1200 fuel pump relay location

Postby virgilmobile » Fri Aug 28, 2015 5:04 pm

Are we talking about a gl1200 with a OEM pump?
The original pump..If you squeeze off the fuel line feeding the carb(or plug it) the pump should quickly stop pumping.At the same time it should have developed no more than a couple pounds of pressure on that line.
I do know of aftermarket pumps that ran in the 7-10 psi range.I think they were from autozone.
I not certain that they would run on the OEM Gl1200 circuit either.




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