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.

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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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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.

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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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Re: Tachometer gauge not working

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

Somewhere around 200°.

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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.

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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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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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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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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, ♪
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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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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:

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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.

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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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Re: Tachometer gauge not working

Post by Maz » Sat Sep 21, 2019 7:47 am

I have to ask the obvious question...are you spinning it counter clockwise from the back of the guage?
Maz
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Re: Tachometer gauge not working

Post by YourJere » Thu Sep 26, 2019 4:32 am

I spun it both ways, I don't believe that could damage it because the speedo stayed perfectly functional, also its been a few days so I might try again because I see exactly what you mean

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Re: Tachometer gauge not working

Post by YourJere » Fri Sep 27, 2019 12:07 am

Maz wrote:
Sat Sep 21, 2019 7:47 am
counter clockwise
Maz
Alright, last night I spun it again both ways to see if that was the issue.
Needle didn't move and i tried both ways again to see if it needed more rotations. I saw it twitch and break free the needle a bit.
(the needle wasn't even sitting on the little rest at 0 it was stuck a little higher)
anyways it kept twitching and getting stuck around 4, and eventually from a few minutes of spinning it with the drill it started to spin to 10k rpm, pretty sweeet. it was just stuck and needed to be moved around.

I think, whenever people fix their gauges, we need to tell them before opening it, get a drill with an S1 bit, and stick it in the gauge and spin it to try and break the needle free again. I was very close to opening mine up and risking the damage.


Edit: Both my fuel and temp gauge are having issues so, If I was rich I'd just buy the 7 volt regulator available here, but unfortunately I am 17 so I must make sure it isn't other issues first

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Re: Tachometer gauge not working

Post by DenverWinger » Fri Sep 27, 2019 5:23 am

Good job on getting the tach to work. I wasn't so lucky on my 1100, when I first got the bike running after sitting for 10 years the tach needle was stuck on it, too. It did finally break free, but moved very slowly and would never move much above 3k RPM. After a couple months of this I went and found another tach.. :cry:

There's three connections on the 7 volt regulator, if there's some doubt about the regulator get a voltmeter and measure it.

Red wire should be 12 volts, Green wire is ground, and the black wire should measure at...... 7 volts.
♫ 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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Re: Tachometer gauge not working

Post by YourJere » Sun Oct 06, 2019 6:10 pm

DenverWinger wrote:
Fri Sep 27, 2019 5:23 am
There's three connections on the 7 volt regulator, if there's some doubt about the regulator get a voltmeter and measure it.

Red wire should be 12 volts, Green wire is ground, and the black wire should measure at...... 7 volts.
Well, now is the time to test my regulator, my grandfather letting me borrow his voltmeter.
Basically, I just hold the black end of volt meter to green wire? and red to the red, and then red to the black?
Im gonna go try it anyways and update you if I got the correct readings.
I suck at anything electrical so i hardly understand what I must do

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Re: Tachometer gauge not working

Post by YourJere » Sun Oct 06, 2019 7:05 pm

As I suspected I have no idea how to do that test.
There is a red/white wire, green/black and solid green if I remember correctly.
I do not see a regulator to replace but I know that is the connection. the 3 male connectors are the regulator?
the top male end is the ground, and the lower two are for the fuel and temp?
so if I hold the black end of the voltmeter to the ground and the red to either the fuel or temp I should see a reading of either 12 or 7.
If I did that should I have gotten those readings? Because all it did was fluctuate a ton never sat near a steady number.

I might be doing it wrong like I said I suck with electrical stuff

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Re: Tachometer gauge not working

Post by DenverWinger » Mon Oct 07, 2019 5:50 am

Put the meter black lead to a ground (engine block is OK) for all three tests.

Meter Red lead to red/white should show around 12 volts, to green/black should show 7 volts, and to solid green should be 0 volts (or very close). The green/black 7 volt wire sends power to both of the gauges. The voltage there should be fairly steady.
♫ 99 Little Bugs in the Code, ♪
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♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:

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Re: Tachometer gauge not working

Post by YourJere » Tue Oct 08, 2019 8:34 pm

If it were faulty what kind of readings would I Get because I definitely didn't get 12 volts on any of them.

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Re: Tachometer gauge not working

Post by DenverWinger » Tue Oct 08, 2019 8:50 pm

Not to state the obvious, but you did have the key "on" when you measured? You should have 12 volts on the red/white wire at least. Maybe you didn't have the meter black lead to a good ground.

Try again, after you see 12 volts on the red/white wire check the green/black for 7 volts.


♫ 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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