Bad Alternator,am I right? - GL1800Riders
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post #1 of 15 (permalink) Old 03-22-2017, 01:03 AM Thread Starter
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Bad Alternator,am I right?

I think I've done enough research to believe that I have a bad alternator.
I'm open to all suggestions if I might be wrong.

04 GL 1800 68,000 miles
Battery was new 4 years ago( approx 5,000 mi) always on a battery tender when parked.

Went for a ride 3/19. Rode 188 miles,with a good load on the electrical system. Stereo,wife's Gerbing pants and liner,my Gerbing liner
Suddenly lost all electronics,including display,stereo,intercom,etc.
Couple miles later engine died,would not restart.

Hauled bike home. Bike started when in garage,but onboard voltmeter showing around 10 volts.
Pulled the battery,local shop says battery has a bad cell.
Replaced battery with new battery.
Voltage measured at the battery 12.1 volts with the key off. Started fine,voltage reads 11.6 with engine running. Rev to 3000 rpm voltage drops to 11.5 volts.

Cruise control fuse checked and is ok.

I've been away from this board for a while,but at one time there was a guy that sold rebuilt alternators. Was it Ken Hemings? Is he still around?

Jeff in Ferndale,WA
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post #2 of 15 (permalink) Old 03-22-2017, 02:56 AM
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Sounds like a pretty safe bet to me, it's the alternator. Here's a link, just ordered a alternator from these guys late last week.

http://store.aj-elec.com/catalog/pro...1e09f5d0327ae3


Here's the Ken Heming link I believe you were looking for.

http://myplace.frontier.com/~hemi-roid/

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post #3 of 15 (permalink) Old 03-22-2017, 07:45 AM
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http://www.partzilla.com/parts/searc...TOR/parts.html


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post #4 of 15 (permalink) Old 03-22-2017, 08:08 AM
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It is a bit of a gamble, but a good, local alternator shop can rebuild it. It is a standard Mitsubishi alternator found in a lot of cars. They will be very familiar with all the internals. They should have or can get everything, including bearings to rebuild it.

The gamble is that, because of the special gear on the shaft, they will not be able to spin it up and check their work before handing it back to you. About the only thing they can't rebuild is the main windings, but they should be able to test that on the bench for an open or shorted winding. If found bad, they stop right there.

If you have the time and inclination, remove it and have the local guy rebuild and put it back, crossing your fingers that it is good to go.
@Rail32 can provide more specific (correct?) information. See his post here:

Alternator rebuild



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post #5 of 15 (permalink) Old 03-22-2017, 09:24 AM
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Don't know for sure on the GL because I've never had that problem. Most vehicles have a "charge" fuse in the fuse block. I've seen a shorted battery or too much load blow that fuse. You should check that first. Its probably the alternator but better safe then sorry.
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post #6 of 15 (permalink) Old 03-22-2017, 10:13 AM
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Quote:
Originally Posted by Shooter F6B View Post
Don't know for sure on the GL because I've never had that problem. Most vehicles have a "charge" fuse in the fuse block. I've seen a shorted battery or too much load blow that fuse. You should check that first. Its probably the alternator but better safe then sorry.


I believe that is the "Cruise fuse" that he already checked, and verified that cruise control works.

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post #7 of 15 (permalink) Old 03-22-2017, 12:09 PM
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It sounds like a bad alternator, but check the plug at the alternator for corrosion and/or being completely plugged in. If the plug is ok, then it's the alternator.
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post #8 of 15 (permalink) Old 03-22-2017, 12:14 PM
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Quote:
Originally Posted by ftartagl View Post
http://www.partzilla.com/parts/searc...TOR/parts.html


OEM 305.00 Fast delivery! I only buy my parts from them. Best prices on everything and fast shipping...

AJ-Electric are OEM Honda alternators. Like Walrus, I just bought one earlier this week and now awaiting delivery...they say Friday. Unlike Walrus, the alternator for my '01 only cost me $140....that's brand new not rebuilt.


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post #9 of 15 (permalink) Old 03-22-2017, 12:14 PM
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I'd put my money on the alternator. Personally I'd look at the higher output alternators since you are running a lot of stuff at one time. I do the same and my bike is almost at 70K mark. So alternators are on my radar too. Good luck!
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post #10 of 15 (permalink) Old 03-22-2017, 12:35 PM Thread Starter
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Quote:
Originally Posted by techdude2000 View Post
It sounds like a bad alternator, but check the plug at the alternator for corrosion and/or being completely plugged in. If the plug is ok, then it's the alternator.
I ran across a thread last night discussing the plug. I will check before I order a new alternator.
Thanks!

Jeff in Ferndale,WA
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