87 Aspy Charging Issues


Information and questions on GL1200 Goldwings (1984-1987)
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Mav4G
Posts: 71
Joined: Sat Sep 13, 2014 1:38 pm
Location: Tampa, Florida
Motorcycle: 1984 GL1200A Aspencade
1987 GL1200A Aspencade

87 Aspy Charging Issues

Postby Mav4G » Fri Feb 12, 2016 9:47 am



Hello everyone. I was recently on here about narrowing down my 'wont start' issues and ended up replacing the starter. Right after I did that the Aspy started giving me, what seemed like, battery issues. Just before replacing the starter the stator was charging at 14.2v. Right after that it dropped to 12.6v and would vacillate to 12.2v. I had the battery checked and it was strong - showing 384 cranking amps and it does hold a charge. The bike runs fine on the system but every time I use the starter it uses up a limited reserve of power. Yesterday I charged the battery for an hour, and after a cold start I tested the stator and it showed it was charging again at 14.2. I let it warm up (2 bars) and then tested the starter amps. The meter dropped from 12.8 down to 9.46v for that moment the starter was engaged. The engine cranks up almost immediately if there's enough power. But sadly the stator showed only 12.26v avg. So the stator does work at full throttle under certain conditions but I can't figure it out. I do have a short somewhere because the STOP fuse in my main box is blown suggesting my brake lights have a powerline grounding out somewhere. Im taking it apart to find it, but that shouldn't stop the stator. Why it will work at 14.2 or not at all is bewildering me. I have gone through most of the connectors and cleaned the primary grounds. Any thoughts you might have are always appreciated. Thanks up front for chiming in!



triwing
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Location: Stow Ohio
Motorcycle: 84 gl 1200,87int,91asp

Re: 87 Aspy Charging Issues

Postby triwing » Fri Feb 12, 2016 11:03 am

Unplug your stator, & check for resistance between the three yellow wires to each other. :?: Should be none, :!: between any & all three wires, to one another. ;)

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Mav4G
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Location: Tampa, Florida
Motorcycle: 1984 GL1200A Aspencade
1987 GL1200A Aspencade

Re: 87 Aspy Charging Issues

Postby Mav4G » Fri Feb 12, 2016 11:38 am

This morning I did a cold start and the battery was at 12.25v cold. The starter dropped it to 9.12v briefly while engaged. As it warmed up it went from 12.12 after starting to 13.21 after about a minute or two (a slow gradual climb). But it held steady at 13.2 as long as the choke was on holding the rpm's at 1700. When it warmed up I dropped the choke and the meter dropped to 12.6v and held steady - and would spike upwards if I rev'd it up. So the stator seemed to hanging in there. I will pull the stator connection and see if I can test the 3 yellow wires. The PO has already changed them to a different config so Im not sure what it will take to get independent readings; but will pursue that shortly.

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Mav4G
Posts: 71
Joined: Sat Sep 13, 2014 1:38 pm
Location: Tampa, Florida
Motorcycle: 1984 GL1200A Aspencade
1987 GL1200A Aspencade

Re: 87 Aspy Charging Issues

Postby Mav4G » Fri Feb 12, 2016 12:06 pm

Ok, as I understand it the 3 yellow wires coming from the stator are (or have been) soldered to the 3 going into the regulator thereby eliminating the connector - is that right? Therefore I would check the resistance at the regulator? Im unclear as to there actually being a stator plug to disconnect since that was the goal by the PO to eliminate it. Or do I envade the the yellow wires themselves to get a reading? And if so where would I unplug something to stop any power - the battery neg cable? The attached photo should help. If I sound confused its because I am, lol...

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virgilmobile
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Motorcycle: 1988 GL1500 I
Previously owned
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84 GL 1200 I

Re: 87 Aspy Charging Issues

Postby virgilmobile » Fri Feb 12, 2016 12:33 pm

If the connections look unburnt (dark) and you believe they have been soldered (not just crimp connected),you can unplug the regulator module and measure the stator resistance from up there.One common problem area is the 2 green wires from the regulator...there plug connection,as the others, must be absolutely clean...No corrosion allowed...Also locate those 2 green wires where they attach to the frame.Remove and clean them also.I believe the ground lug is near the regulator module.

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Mav4G
Posts: 71
Joined: Sat Sep 13, 2014 1:38 pm
Location: Tampa, Florida
Motorcycle: 1984 GL1200A Aspencade
1987 GL1200A Aspencade

Re: 87 Aspy Charging Issues

Postby Mav4G » Fri Feb 12, 2016 12:59 pm

Ok, after pulling the false tank I think I found a source of issues (see photo). If you look closely you'll see the wires coming from the RR. There is a BW wire that just deadends at the coupler left on it. There is a yellow wire that for some reason was ripped off and shorted causing the insulator to melt about 2 1/2 inches down. Im going to see if I can clean that up and reconnect it and see what happens. Im hoping the RR hasn't been damaged.

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Mav4G
Posts: 71
Joined: Sat Sep 13, 2014 1:38 pm
Location: Tampa, Florida
Motorcycle: 1984 GL1200A Aspencade
1987 GL1200A Aspencade

Re: 87 Aspy Charging Issues

Postby Mav4G » Fri Feb 12, 2016 1:31 pm

I hate it when these issues trail off so Im going to complete this. I renewed the connection (yellow) that melted and just left the BW wire alone. Started the bike and it was charging in the 14.2v range at 3000 rpm and 13.8v at 2000 rpm. Im a happy camper as the force is with me on this one. I love posting issues on this site as writing it out keeps the forward thinking in gear - along with all the help too! And I'll go ahead and clean the green wire connections while Im here. Thanks Virgilmobile and Triwing for hour help. Happy trails :)

triwing
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Motorcycle: 84 gl 1200,87int,91asp

Re: 87 Aspy Charging Issues

Postby triwing » Fri Feb 12, 2016 1:38 pm

Good place to start, solder, & shrink wrap ,when your sure this is your issue. Only sure way to connect, crimps come apart more often than many think.Battery fully charged, should not drop lower than 10.5 volts on a voltage drop test.

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Mav4G
Posts: 71
Joined: Sat Sep 13, 2014 1:38 pm
Location: Tampa, Florida
Motorcycle: 1984 GL1200A Aspencade
1987 GL1200A Aspencade

Re: 87 Aspy Charging Issues

Postby Mav4G » Fri Feb 12, 2016 3:02 pm

So the voltage drop test (ie: when starter is engaged) shouldn't be in the nines? I thought I read in a couple blogs where that was acceptable on these old wings. I didn't think to do a test after I repaired it. I will do that next opportunity in the morning. If it falls below the 10.5 what does that suggest even though the cranking amps may be normal? Thanks.

triwing
Posts: 72
Joined: Tue Oct 30, 2012 3:24 pm
Location: Stow Ohio
Motorcycle: 84 gl 1200,87int,91asp

Re: 87 Aspy Charging Issues

Postby triwing » Sat Feb 13, 2016 8:02 am

Weak battery, :( or not fully charged. :)




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