Key ON = Battery goes down....(have voltage numbers)

[1_v8_merc]

Brand new battery, properly charged, couple days old.

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I need help guys, this isn't right!


1.)Battery Resting Voltage- 12.75 volts

2.)Key ON(no headlight) - 12.67...and continues to Drop.

3.)Key ON(headlight On) - 12.22 Instantly and holds!

4.)Key back OFF- voltage jumps to 12.45, then climbs to 12.70


=====
Now I try to Start the bike.....

1.)Bike RUN (no headlight)- 12.34...then holds steady at 12.39.

2.)Bike OFF - goes back to 12.70 within 1 minute approx.

If I rev the bike to 4-5k Rpms, the voltage does NOT increase!
It goes between 12.39-12.40 volts!

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So I'm looking at a bad or weak Stator, and what else.......a bad connection or faulty Igniter???

 

[Guest]

Your starting system needs checked and you also need to clean connectors and grounds.

 

[1_v8_merc]

Yea, my starter brushes are worn.

I've been threw the wiring harness many times, I can't find anything.
Maybe I overlooked something.

 

[Guest]

Chef's right, you got some cleaning to do!

When I first hooked my harness back up, turning the key on got me a 2v drop at the coils, something like 12.6v at the battery to something like 10.6v at the coils, not good at all.

Cleaned the harness connections and it gave me a marginal improvment.

Cleaned the guts of the kill switch and ignition switch, and voltage loss is 0.2v to 0.5v at the coils.

I also cleaned the headlight switch and horn button while is was in there as they were just a black and dodgy, so definitely worth a look.

 

[mike_of_bbg]

So it's starting and running. Quick test looks OK; have you gone through the stator papers?

Also, have you tried holding it at 4-5k for a minute or so to see if in increases slowly?

If it's running and you can rev it, why would you suggest that there's something wrong with the ignition system? Maybe that was in another thread?

Not that it really matters much w/r/t the charging system, but which of your GSes are we talking about?

 

[1_v8_merc]

So it's starting and running. Quick test looks OK; have you gone through the stator papers?

Also, have you tried holding it at 4-5k for a minute or so to see if in increases slowly?

If it's running and you can rev it, why would you suggest that there's something wrong with the ignition system? Maybe that was in another thread?

Not that it really matters much w/r/t the charging system, but which of your GSes are we talking about?

Sorry guys, it's the 82 650g.....my problem child,

I thought I read in another post, that if you turn the Key On, and get a big voltage drop, that means there is a Short or Fault in the igniter or something?
Maybe I read it wrong.....?

Just seems like I'm running on waaayyyyy less voltage than I should have.

Or maybe I'm making a big stink out of something simple.

 

[mike_of_bbg]

I think your voltage drop is OK. When you say headlight on/off - do you have a headlight switch or are you disconnecting the headlight? Is this a US model?

If it's a US model - have you bypassed the useless loop for the third stator leg yet?

 

[SqDancerLynn1]

1.)Bike RUN (no headlight)- 12.34...then holds steady at 12.39.
You also need to go back and check the charging circuit
Bad Regulator?
Bad stator
OR connections
Go to the stator pages and check the system...

 

[posplayr]

if you go look at the stator pages you will probably quickly end up doing a stator check(probably bad). Look for the revised Phase B stator pages

 

[Redman]

Battery volt drop of a less than a volt when headlight turned on is not too bad. So I do not suspect a problem there with battery, and if there was more of a volt drop that would only tell you about the battery being weak.

.....
......
If I rev the bike to 4-5k Rpms, the voltage does NOT increase!
It goes between 12.39-12.40 volts!

-----------

Now that is a problem, and definatlyh a problem with the charging system. It as if you do not have a charging system.

Go to Stator papers. There are a lot of detailed steps there to check lots of things. BUt, The major two things are the stator voltage no-load test. And checking the R/R with the diode check feature of a digital meter.

Either something is completely disconnected, or something has completly failed.

Tell us more what you find.

(Have that woman sitting on your bike give you a hand checking this out.)

.

 

[posplayr]

Battery volt drop of a less than a volt when headlight turned on is not too bad. So I do not suspect a problem there with battery, and if there was more of a volt drop that would only tell you about the battery being weak.





Now that is a problem, and definatlyh a problem with the charging system. It as if you do not have a charging system.

Go to Stator papers. There are a lot of detailed steps there to check lots of things. BUt, The major two things are the stator voltage no-load test. And checking the R/R with the diode check feature of a digital meter.

Either something is completely disconnected, or something has completly failed.

Tell us more what you find.

(Have that woman sitting on your bike give you a hand checking this out.)

.

I cant tell what your talking about; how bout a bigger picture ??

 

[Redman]

I cant tell what your talking about; how bout a bigger picture ??

refereing to 1_V8_mercs avatar

 

[1_v8_merc]

Alright did the stator test, Ohms seemed fine at first. But as I waited, they climbed over 2.0, sometimes acted extremely sporadic.

I did the continuity test, checked out fine.

Went out for a ride, a little highway, a little back road.

Came back with 12.0 volts!


Guess I'm gonna jump on ebay and grab a stator.......there's goes my ****ing Tire money for the 750!!!
Seems like I'm dragging my $$$ all over the place between 4 bikes!
I think I need to down-size.....haha.

 

[tom203]

Sorry guys, it's the 82 650g.....my problem child,

I thought I read in another post, that if you turn the Key On, and get a big voltage drop, that means there is a Short or Fault in the igniter or something?
Maybe I read it wrong.....?

Just seems like I'm running on waaayyyyy less voltage than I should have.

Or maybe I'm making a big stink out of something simple.

Problem child ? It doesn't like walmart batteries! Sounds like your stator is gone, but do the tests to confirm. You still got the original R/R?

 

[posplayr]

refereing to 1_V8_mercs avatar

errrr, that is not a bigger picture

 

[1_v8_merc]

Im sure it's still on the stock RR too......

(BTW that picture isn't even a GS if I remember correctly.....i wish that was my girl! But I do have a larger picture of her,lol.)

 

[posplayr]

Im sure it's still on the stock RR too......

(BTW that picture isn't even a GS if I remember correctly.....i wish that was my girl! But I do have a larger picture of her,lol.)

What is a GS?

 

[BassCliff]

Hi,

Be sure to connect the ground wire of your r/r unit directly to the negative terminal of your battery. Clean all electrical connections, grounds, and fuse box.

Here's a few links to help with your issue:


The Stator Papers

GS Charging System Health+Quick Test

More On The Stator Papers

Fusebox Cleanup

Cleaning Your Wiring Harness

​

Stator Test

​

Stator Replacement

​

Regulator/Rectifier Replacement


Thank you for your indulgence,

BassCliff

 

[tom203]

Im sure it's still on the stock RR too......

(BTW that picture isn't even a GS if I remember correctly.....i wish that was my girl! But I do have a larger picture of her,lol.)

And of course, you've improved the grounding between the ignitor and R/R mounting plate to battery negative.