RED LITE!


Information and questions on GL1500 Goldwings (1988-2000)
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shadow02
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RED LITE!

Postby shadow02 » Sun Sep 20, 2015 7:19 pm



Hi ho Goldwing nation, Shadow02 here. I don't remember if I have addressed this question before but I have a 1988 gL 1500 and my concern with this lady is that the "low fuel lamp" still does no come on when the fuel is down to fumes. I know that there is a simple way to test if the sensor is shot or if there are other issues at hand. The expertise of my fellow WingNutz is greatly appreciated-
Rubber side down, shiny side up-



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spiralout
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Re: RED LITE!

Postby spiralout » Sun Sep 20, 2015 9:22 pm


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Bluewaterhooker0
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Re: RED LITE!

Postby Bluewaterhooker0 » Sun Sep 20, 2015 10:43 pm

If it doesn't come on while the W/BL wire is grounded, you could also have a bad bulb in the cluster. If anyone has replaced that bulb with an LED bulb, that might also cause issues. As I understand it, that circuit relies on the bulb resistance to operate properly, thus requiring a standard incandescent bulb. No LEDs. However, I would think that if it is an LED, it would light when the W/BL wire is grounded, as the thermistor (fuel sensor) is taken out of the circuit. If both the sensor and bulb test good, check for an LED.

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shadow02
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Re: RED LITE!

Postby shadow02 » Mon Sep 21, 2015 6:33 am

OK, sounds like a plan. I am just coming out of my rookie year owning a Goldwing so if I may as, where do I find the fuel sensor on the bike. Please use the KISS theory with me. I do better with pictures if available. Thx.
spiralout wrote:
Untitled.png

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spiralout
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Re: RED LITE!

Postby spiralout » Mon Sep 21, 2015 10:22 am

It's on the fuel pump support arm.

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Re: RED LITE!

Postby deanbw » Mon Sep 21, 2015 10:36 am

how does "low sugar", or Low calorie" - word spelled "Lite" have anything to do with Goldwings ? They are in no way low calorie, but large and proud of it. :P

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shadow02
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Re: RED LITE!

Postby shadow02 » Mon Sep 21, 2015 10:38 am

Copy that. I'll find it. Thx.
spiralout wrote:It's on the fuel pump support arm.

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spiralout
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Re: RED LITE!

Postby spiralout » Mon Sep 21, 2015 11:05 am

There's some pics and other info here http://goldwingdocs.com/forum/viewtopic.php?f=14&t=11167

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Re: RED LITE!

Postby NVSB4 » Mon Sep 21, 2015 11:40 am

It could also mean that your sender/float rod is bent to where it never goes down far enough to read that it's empty.
While you're in there, check to make sure.
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Re: RED LITE!

Postby WingAdmin » Mon Sep 21, 2015 11:47 am

Assuming the bulb is OK (and it usually is, because it rarely lights up), it's generally the thermistor that fails. They have a limited life.

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shadow02
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Re: RED LITE!

Postby shadow02 » Mon Sep 21, 2015 3:06 pm

Ok WingAdmin, what is a thermistor and where do I find this creature? The bulb is an LED that I replaced when I did my cluster. Don't remember if that was one of the lamps I put a resistor on but I followed the "how to's" in the DIY's on the 1500's on this site.I looked in my service manual and was unable to find a "thermistor".
WingAdmin wrote:Assuming the bulb is OK (and it usually is, because it rarely lights up), it's generally the thermistor that fails. They have a limited life.

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shadow02
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Re: RED LITE!

Postby shadow02 » Mon Sep 21, 2015 3:13 pm

So how does one check the sender /float rod? Here might I find that on the bike? Can I access it through where the fuel pump comes out?
NVSB4 wrote:It could also mean that your sender/float rod is bent to where it never goes down far enough to read that it's empty.
While you're in there, check to make sure.

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Re: RED LITE!

Postby spiralout » Mon Sep 21, 2015 4:04 pm

NVSB4 wrote:It could also mean that your sender/float rod is bent to where it never goes down far enough to read that it's empty.
While you're in there, check to make sure.


The float arm and sender have nothing to do with whether/when the low fuel light comes on, Don't make this harder on the OP than it already is.

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Re: RED LITE!

Postby WingAdmin » Mon Sep 21, 2015 10:40 pm

shadow02 wrote:Ok WingAdmin, what is a thermistor and where do I find this creature? The bulb is an LED that I replaced when I did my cluster. Don't remember if that was one of the lamps I put a resistor on but I followed the "how to's" in the DIY's on the 1500's on this site.I looked in my service manual and was unable to find a "thermistor".
WingAdmin wrote:Assuming the bulb is OK (and it usually is, because it rarely lights up), it's generally the thermistor that fails. They have a limited life.


It is a resistor whose resistance varies depending on the temperature. It's attached to the fuel pump arm, which is accessible from the top of the tank (under the seat) and is submerged in gasoline, which keeps it cool. When the level of gasoline gets below the thermistor, it no longer has the gas to cool it, so its temperature rises, the resistance lowers, and current can flow, illuminating the low fuel bulb.

Unless it's an LED, which illuminates with very little current, so it will stay on all the time.

Have a look at this (rather lengthy) thread where virgilmobile and I replaced ours: viewtopic.php?t=11167

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Re: RED LITE!

Postby otto1 » Fri Sep 25, 2015 12:48 pm

The first test is always when the ignition is turned on and all the dash lights light up. Does it come on when you turn the ignition on??




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