charging issues


Information and questions on GL1500 Goldwings (1988-2000)
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Fireball
Posts: 17
Joined: Fri Jun 06, 2014 10:15 am
Location: Fairmont WV
Motorcycle: 1994 GL1500 SE

charging issues

Postby Fireball » Sun Sep 13, 2015 11:41 am



Last month my 94 1500 wouldnt start. tested the battery and it was dead.it took a charge and i tested the alternator output at only 10.2volts or so at a fast idle. I bought an alternator from DB Electric and sadly it didnt make it a month. I took my factory alt to a shop and had it rebuilt. I installed it and a brand new battery. After installation i tested voltage at the battery and it slowly climbed to 13.5 at high idle. took it for a spin and retested it.Now about 12 volts at idle maybe 12.5 at high idle. I have battery voltage at the small black/yellow wire. Is my rebuilt alternator already bad? Shouldnt it put out 13.5-14.5 volts like a car alt? If not what votages should i look for a idle and high idle? I think i read the alternator doesnt charge at idle. These chargin issues are driving to sell the bike.



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RBGERSON
Posts: 2612
Joined: Tue Mar 09, 2010 7:57 am
Location: SCOTTSDALE, AZ
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: charging issues

Postby RBGERSON » Sun Sep 13, 2015 11:43 am

regulator issue maybe, I know the 1100 have a regulator that regulates volts to the battery...where are you checking the output..battery or alternator
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

Fireball
Posts: 17
Joined: Fri Jun 06, 2014 10:15 am
Location: Fairmont WV
Motorcycle: 1994 GL1500 SE

Re: charging issues

Postby Fireball » Sun Sep 13, 2015 11:55 am

both alternator and battery

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robb
Posts: 1040
Joined: Mon Jul 19, 2010 7:46 pm
Location: Lexington, North Carolina
Motorcycle: 1989 Honda GL1500 Aspencade

Re: charging issues

Postby robb » Sun Sep 13, 2015 1:06 pm

Regulator is part of alternator on GL1500. Idle alone will not give the most accurate reading. Ride bike for about 30 minutes, then test.

Fireball
Posts: 17
Joined: Fri Jun 06, 2014 10:15 am
Location: Fairmont WV
Motorcycle: 1994 GL1500 SE

Re: charging issues

Postby Fireball » Sun Sep 13, 2015 2:06 pm

took it for a short test drive. 11.5 or so at idle, fast idle(used the choke)2500 rpm about 12.5-12.8
ive had it on 2 test drives.I dont want to drive it to much and ruin the new battery.

after i first installed everything at high ilde it slowly climbed to 13.5v but hasnt since.

It really ticks me off not having a damn voltage gauge...

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Bluewaterhooker0
Posts: 556
Joined: Wed Nov 14, 2012 11:27 pm
Location: Tampa, Fl
Motorcycle: 1997 Goldwing GL 1500 SE

Re: charging issues

Postby Bluewaterhooker0 » Sun Sep 13, 2015 10:26 pm

That DB alternator should have a 1 year warranty. Have you contacted DB for a replacement ? I bought an 85A alternator from another such supplier, and had issues with the 1st one. Sent it back for a replacement. DB looks to be a reliable supplier from their status of 30 years in business. All these aftermarket units are coming from China, and thus suffer the problems of all the other products they make. Poor quality control. I would try to get a higher output alternator in there. I'm really enjoying the performance so far, a reliable 14V output at all rpms.

Fireball
Posts: 17
Joined: Fri Jun 06, 2014 10:15 am
Location: Fairmont WV
Motorcycle: 1994 GL1500 SE

Re: charging issues

Postby Fireball » Mon Sep 14, 2015 6:26 pm

yes the db is on its way back. I brought my good meter home today and fired it up 13.5-14.5 at high idle(choke on) took it for a spin and around 12.5 at idle and 13-13.5 at high idle. Im at a loss here. I dont want to fry a perfectly new battery bu riding it as it my understanding it should put out 14 at idle. Stopping by the shop that rebuilt the stock alt and talk to them.

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ct1500
Posts: 813
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Location: Glastonbury,CT
Motorcycle: 1988 GL1500
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Re: charging issues

Postby ct1500 » Tue Sep 15, 2015 12:02 am

The alternator is not charging correctly and with those numbers will drain the battery.
This is what I do
Local and need repair help with your 1500, Valkyrie or ST please PM

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robb
Posts: 1040
Joined: Mon Jul 19, 2010 7:46 pm
Location: Lexington, North Carolina
Motorcycle: 1989 Honda GL1500 Aspencade

Re: charging issues

Postby robb » Tue Sep 15, 2015 11:20 am

My alternator is a 90 amp unit. Battery shows 12.7 to 13.1 volt standing and will drop to 12.5 during cranking and remain there until it has either idled for 5 minutes or it is under load at 3000 rpm. With Fluke meter attached it takes 10 minutes riding before seeing 13.5 volt and some hard riding to see 14.1 volt. My new gel battery will charge to 13.7 volt with trickle charger. After 30 minutes meter drops to mid 13 volt for 10 -15 minutes before alternator kicks in. Only takes a few minutes around 14 volt and drops back to mid 13's volt. Have yet to see more than 14.1 volt running high beams, driving lights, GPS and phone. With Sperry amp probe attached to positive battery cable maximum draw observed was 33 amp. Going to take a lot more than bike can produce to pull down the 385 cca.

Fireball
Posts: 17
Joined: Fri Jun 06, 2014 10:15 am
Location: Fairmont WV
Motorcycle: 1994 GL1500 SE

Re: charging issues

Postby Fireball » Thu Sep 17, 2015 6:50 pm

My rebuilder states that on his equipment it tests ok and puts out correct voltage but is going to replace the regulator. He is using OEM parts btw. He asked about the signal voltage and battery. Both are good.What the hell else could i be missing? I tested the ground wire off the battery with my test light. Good. Tested for ground at my positive wire with my DVOM. Am i missing somthing here?

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Bluewaterhooker0
Posts: 556
Joined: Wed Nov 14, 2012 11:27 pm
Location: Tampa, Fl
Motorcycle: 1997 Goldwing GL 1500 SE

Re: charging issues

Postby Bluewaterhooker0 » Thu Sep 17, 2015 9:55 pm

That OEM rectifier/regulator plate costs $140, best price I could find. The whole alternator, OEM, is only $240. Where is he getting OEM parts from, that make all of this practical ? I have a bad rotor on mine, and would like to repair it, if inexpensive enough, for a spare. I've had no luck finding a shop that will rewind it, locally.

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Fatwing Chris
Posts: 741
Joined: Thu Oct 21, 2010 6:10 pm
Location: Ont.,Canada
Motorcycle: 2004 ABS Model Goldwing

Re: charging issues

Postby Fatwing Chris » Fri Sep 18, 2015 5:07 pm

Fireball wrote:My rebuilder states that on his equipment it tests ok and puts out correct voltage but is going to replace the regulator. He is using OEM parts btw. He asked about the signal voltage and battery. Both are good.What the hell else could i be missing? I tested the ground wire off the battery with my test light. Good. Tested for ground at my positive wire with my DVOM. Am i missing somthing here?


If the supplier says it's OK then I would be looking at bad connections.Testing a ground with a test light is pretty much useless. The circuit needs to have a real load on it.20 + year old bike is bound to have some corrosion.I would suggest removing,cleaning tightening all your main cable(+ & -) connections.Especially where the ground cable attaches to the block.
If I'da known it would last this long,I'da taken better care of it.
Chris
Double Dark
Darkside # 1602

Fireball
Posts: 17
Joined: Fri Jun 06, 2014 10:15 am
Location: Fairmont WV
Motorcycle: 1994 GL1500 SE

Re: charging issues

Postby Fireball » Sat Sep 19, 2015 11:27 am

Traced and tested grounds with my DVOM from battery to frame/motor- 2 connections above dipstick and resistance is low and cleaned for good measure. Tested Power wire from battery to relay-relay to starter and the white wire going to alternator all tested good and I roughed them up also.

Anything else I need to check?

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Fatwing Chris
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Location: Ont.,Canada
Motorcycle: 2004 ABS Model Goldwing

Re: charging issues

Postby Fatwing Chris » Sat Sep 19, 2015 6:15 pm

Fireball wrote:Traced and tested grounds with my DVOM from battery to frame/motor- 2 connections above dipstick and resistance is low and cleaned for good measure. Tested Power wire from battery to relay-relay to starter and the white wire going to alternator all tested good and I roughed them up also.

Anything else I need to check?

Even a good meter doesn't tell the whole story.Like I said the circuit needs to have a load on it.There could only be a couple of strands of wire out of the whole cable making contact and it would show a low resistance until you put a load on it.Sounds like you got it covered anyway by cleaning and tightening.
If I'da known it would last this long,I'da taken better care of it.
Chris
Double Dark
Darkside # 1602

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MikeB
Posts: 1223
Joined: Fri Dec 04, 2009 12:54 pm
Location: Tacoma, WA
Motorcycle: 1998 - GL1500 Aspencade.
2003 - GL1800A

Re: charging issues

Postby MikeB » Sat Sep 19, 2015 9:41 pm

Fireball wrote:yes the db is on its way back. I brought my good meter home today and fired it up 13.5-14.5 at high idle(choke on) took it for a spin and around 12.5 at idle and 13-13.5 at high idle. Im at a loss here. I dont want to fry a perfectly new battery bu riding it as it my understanding it should put out 14 at idle. Stopping by the shop that rebuilt the stock alt and talk to them.


Are you talking about an OEM alternator with the output voltage of 12.5 at idle and 13-13.5 at high idle and 13.5-14.5 at high idle after it is first fired up?
If so, that is good. You don't have to look any further.
MikeB
Tacoma, WA, USA

Fireball
Posts: 17
Joined: Fri Jun 06, 2014 10:15 am
Location: Fairmont WV
Motorcycle: 1994 GL1500 SE

Re: charging issues

Postby Fireball » Thu Sep 24, 2015 6:42 pm

Chris how do i test it with a load...always willing to learn.

Got the alternator back from the rebuilder with the new regulator and all is well. The first time i got it back it would build to 13.5 very slowly....this time around it hit 14 out of the gate and has been doing so since.

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Fatwing Chris
Posts: 741
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Location: Ont.,Canada
Motorcycle: 2004 ABS Model Goldwing

Re: charging issues

Postby Fatwing Chris » Fri Sep 25, 2015 9:54 am

Fireball wrote:Chris how do i test it with a load...always willing to learn.

Got the alternator back from the rebuilder with the new regulator and all is well. The first time i got it back it would build to 13.5 very slowly....this time around it hit 14 out of the gate and has been doing so since.


I'm not great at explaining things,but what you need to do is a Voltage Drop Test.Basically you check your battery voltage to get a base reading and then you take a reading on one of your cables at a time(take the cable from the starter solenoid to the starter for example).Just hook your meter to each end of the cable and get a reading. The voltage drop should be well less than a volt.If you use a digital meter it doesn't matter which lead is hooked at which end.It will either read + or - and doesn't really matter.It's the reading that counts(.5 volt,1 volt etc).So if your having a problem you need to start at your battery(one piece/cable at a time)right back to the negative side of the battery to see where the bad/corroded piece is.It could be a bad cable or it could be a corroded area where the motor bolts to the frame.Going to the starter obviously isn't going to help with your charging.In that case you go to the alt. connections,but the negative side of the charging system from alt to battery are the same.Hope I didn't confuse you too much.Might be a good idea to Google " Voltage Drop Test" as I'm sure there are far better descriptions available.
If I'da known it would last this long,I'da taken better care of it.
Chris
Double Dark
Darkside # 1602

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redial
Posts: 1993
Joined: Mon Jan 03, 2011 1:17 am
Location: Kapunda, SouthAustralia
Motorcycle: 1997 GL1500 Spectre Red Aspencade

Re: charging issues

Postby redial » Mon Sep 28, 2015 9:54 pm

Even for a foreigner, that looked a very good explanation. I could understand it all - not bad for people that walk upside down :roll:


Len in Kapunda

The world is not going to finish today, as it is already tomorrow in Australia and New Zealand, and other islands of foreign nations such as Guam and Samoa.


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