Tachometer gauge not working


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YourJere
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Tachometer gauge not working

Post by YourJere » Thu Sep 12, 2019 5:03 am



My tach cable seems to spin but nothing happens within the gauge
But also I am pretty sure my temp gauge works.
Will I be able to replace the singular gauge or fix it?



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virgilmobile
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Re: Tachometer gauge not working

Post by virgilmobile » Thu Sep 12, 2019 7:25 am

Look close.Does the cable end extend into the tach.
My spedo cable also turned but the spedometer didn't move.I found the cable appeared too short.It wasn't.The outer casing had pulled away from the end coupler about a half inch.
I warmed it up with a heat gun and reseated the outer cable into the coupler and this extended the inner cable far enough to make the connection to the spedo drive.
I have also used a drill with a homemade extension inserter into the tach/spedo to spin it to check if they work and are smooth operating.

YourJere
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Re: Tachometer gauge not working

Post by YourJere » Thu Sep 12, 2019 7:30 am

virgilmobile wrote:
Thu Sep 12, 2019 7:25 am
Look close.Does the cable end extend into the tach.
My spedo cable also turned but the spedometer didn't move.I found the cable appeared too short.It wasn't.The outer casing had pulled away from the end coupler about a half inch.
I warmed it up with a heat gun and reseated the outer cable into the coupler and this extended the inner cable far enough to make the connection to the spedo drive.
I have also used a drill with a homemade extension inserter into the tach/spedo to spin it to check if they work and are smooth operating.
Thanks, I'll try that out soon in the future

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virgilmobile
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Re: Tachometer gauge not working

Post by virgilmobile » Thu Sep 12, 2019 8:22 am

Keep in mind that the temp/fuel gauge operate from a 7 volt regulator.Should it go bad,both gauges are affected.This site has a new replacement for it.

YourJere
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Re: Tachometer gauge not working

Post by YourJere » Thu Sep 12, 2019 7:02 pm

Believe my temp gauge works, at what point of the temp gauge should the radiator fan activate?

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virgilmobile
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Re: Tachometer gauge not working

Post by virgilmobile » Thu Sep 12, 2019 7:26 pm

Somewhere around 200°.

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SnoBrdr
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Re: Tachometer gauge not working

Post by SnoBrdr » Thu Sep 12, 2019 8:09 pm

YourJere wrote:
Thu Sep 12, 2019 7:02 pm
Believe my temp gauge works, at what point of the temp gauge should the radiator fan activate?
GL gauges are to be used for guesstimates only.

The worst of the 3 is the gas gauge.

YourJere
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Re: Tachometer gauge not working

Post by YourJere » Sat Sep 14, 2019 2:07 am

virgilmobile wrote:
Thu Sep 12, 2019 8:22 am
Keep in mind that the temp/fuel gauge operate from a 7 volt regulator.Should it go bad,both gauges are affected.This site has a new replacement for it.
I might be needing to buy that regulator.I remember when I got my bike a few months ago the fuel gauge sort of worked but it moved so slow and would sometimes stop a quarter of the way, and they both work occasionally off and on. Do I need a full battery for both to work? The regulator is a bit expensive for me so I wanted to mess with it a bit more

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DenverWinger
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Re: Tachometer gauge not working

Post by DenverWinger » Sat Sep 14, 2019 5:47 am

If the regulator is bad the symptoms are the electric gauges will go to either full-scale or zero, and stay there. So most likely your regulator is OK.

You might try taking the fuel sender out of the tank and soaking it overnight in vinegar to dissolve the rust and corrosion, that would likely fix the fuel gauge.
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YourJere
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Re: Tachometer gauge not working

Post by YourJere » Sun Sep 15, 2019 6:01 pm

DenverWinger wrote:
Sat Sep 14, 2019 5:47 am
You might try taking the fuel sender out of the tank and soaking it overnight in vinegar to dissolve the rust and corrosion, that would likely fix the fuel gauge.
I've done that before and cleaned out the inside, I honestly thought the issue seemed to be within the gauge almost with how slow the needle moved.
Also last few times I used the motorcycle the temp gauge worked pretty good but at no point did it ever activate the radiator fan so I am not sure if engine just didn't get hot enough

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DenverWinger
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Re: Tachometer gauge not working

Post by DenverWinger » Sun Sep 15, 2019 9:31 pm

Fan won't come on until temp gauge reaches half-scale or so when things are working correctly, at least that's how my 1100 behaves and my 1000 did same.

The temperature switch for kicking on the fan is separate from the temperature sender, so the fan should work correctly independent of the temp gauge. as you said, you probably just haven't got it hot enough yet. If you see temperature gauge hit 3/4 scale and no fan I'd start checking out the fan system. The control switches and fan motors rarely fail, most common fan failure on the 4 cyl 'wings is corrosion on the fan switch terminals.

There's heavy damping on the fuel gauge needle, this to keep the needle from bouncing around with the sloshing fuel, it doesn't need to move fast. So most likely is OK.
♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:

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YourJere
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Re: Tachometer gauge not working

Post by YourJere » Mon Sep 16, 2019 1:45 am

I have tested my fan off the bike and it spins. Also the "fan switch terminals" are the 2 electrical things poling out by the thermostat that has a whole plug covered in rubber right? I took it off and it seemed clean to me, I'll take the fuel sender out again and mess with it move it around while its connected to make sure its working right, I did notice when I've done that before that I could put it at the halfway mark and it wouldn't do anything, then put it on full and it slowly went there but sometimes it never adjusted itself for the place I moved the float to. I don't see how it would be faulty though, I should also top off my battery.

Also ordered a tires, tubes, rim strips, headlight and a helmet on the internet so it'll be much closer to done soon.

edit: I don't even have the fan plugged in right now but it didn't work before unplugged so I don't think that's my current issue but I hope it is

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DenverWinger
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Re: Tachometer gauge not working

Post by DenverWinger » Mon Sep 16, 2019 6:44 am

YourJere wrote:
Mon Sep 16, 2019 1:45 am
Also the "fan switch terminals" are the 2 electrical things poling out by the thermostat that has a whole plug covered in rubber right? I took it off and it seemed clean to me, .
One of the two electrical things by the thermostat is the sender unit for the gauge (should have only one connection) and the other is the fan switch (on the 1100 has two brass contact pins sticking out of the top that the rubber plug cap attaches to, suspect the GL1000 will be the same).

You can check the fuel sender with an ohm meter, at the "full" position should be close to 0 ohms, toward "empty" it will read around 100 ohms. Move the lever slowly looking for "dead spots", this would indicate further cleaning is needed.
♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:

~Mark

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Re: Tachometer gauge not working

Post by WingAdmin » Tue Sep 17, 2019 9:35 am

DenverWinger wrote:
Sat Sep 14, 2019 5:47 am
If the regulator is bad the symptoms are the electric gauges will go to either full-scale or zero, and stay there. So most likely your regulator is OK.

You might try taking the fuel sender out of the tank and soaking it overnight in vinegar to dissolve the rust and corrosion, that would likely fix the fuel gauge.
The 7 volt regulator, when failing, will often work intermittently for a while before failing completely. When it is not working, as mentioned, both gauges will go full scale or read zero.

YourJere
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Re: Tachometer gauge not working

Post by YourJere » Fri Sep 20, 2019 4:57 am

I figured out how to fix my speedometer, but sadly my tachometer has a different issue.
Basically with the speedo, I could put a flathead inside the bottom end of the speedo cable and with it unscrewed from the gauge I could visibly see the cable turning.
BUT whenever inside the gauge, and the drill spinning it, nothing happened.
SO I removed the gauge and I was trying to find something that fits inside the gauge like the cable did to see if it's stuck. Anyways the square S1 drill bits fit perfectly inside, so with my impact I could feel it was frozen and pulled the trigger to make it spin and it broke free, and now my speedometer is functional,
but the lower end of the cable that is crimped over the wires had ripped itself off, but I just squeezed it back over for now and it appears to be fine for now.

And for the tach, I tried the same trick with the S1 drill bit right where the cable plugs into, and it spins yet the needle doesn't move. The tach doesn't require electricity to function does it? just the temp gauge?
Anyways, any advice would be appreciated because my next step it likely to pry the rim off to open it up and help the needle break free.



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