Generator light on ... alternator is charging... [message #312821] |
Sun, 05 February 2017 12:24 |
amdgmcman
Messages: 76 Registered: April 2007 Location: Long Beach, CA
Karma: 0
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Greetings,
The 100 amp alternator on my 78 Royale is putting out 13+v, and yet the GEN light on the dash is on. The belt is tight and the connections are clean. Has anyone had this problem? Is there a relay or??? that might be faulty ... and Where might it be located? Any help would be greatly appreciated of course.
Thanks,
AMDGMCMan
Alan M DeLuccio
78 Royale with
Coachmen,Center Kitchen Floorplan
09 Harley Davidson Street Glide
65 Corvair Monza Convertible
96 RAV4 2 door Manual 4WD
Long Beach, CA
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Re: Generator light on ... alternator is charging... [message #312831 is a reply to message #312821] |
Sun, 05 February 2017 14:16 |
amdgmcman
Messages: 76 Registered: April 2007 Location: Long Beach, CA
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I have/had been using an APC. The light came on while it was installed. I removed it ... tightened and cleaned everything, but when removing the APC the tab/clip on the connector on the side that connects to the alt broke off, so I have not reinstalled it.
AMDGMCMan
Alan M DeLuccio
78 Royale with
Coachmen,Center Kitchen Floorplan
09 Harley Davidson Street Glide
65 Corvair Monza Convertible
96 RAV4 2 door Manual 4WD
Long Beach, CA
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Re: Generator light on ... alternator is charging... [message #312833 is a reply to message #312831] |
Sun, 05 February 2017 14:30 |
amdgmcman
Messages: 76 Registered: April 2007 Location: Long Beach, CA
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The steering boot(s) also need replacement. There are 2 types offered at Applied. The Al Ferrara's Steering Boot Kit and the GM16-STBOOT. Does anyone have experience with these 2 kits? Is one an easier install than the other. I changed mine out about 10 years ago and it was a pain.
AMDGMCMan
Alan M DeLuccio
78 Royale with
Coachmen,Center Kitchen Floorplan
09 Harley Davidson Street Glide
65 Corvair Monza Convertible
96 RAV4 2 door Manual 4WD
Long Beach, CA
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Re: Generator light on ... alternator is charging... [message #312839 is a reply to message #312821] |
Sun, 05 February 2017 15:47 |
Ken Burton
Messages: 10030 Registered: January 2004 Location: Hebron, Indiana
Karma: 10
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Output of the alternator should be around 14.7 volts if you are reading it at the alternator or at the center post of the isolator. If read after the isolator it should be 13.8 to 14.2 vDC.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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Re: Generator light on ... alternator is charging... [message #315092 is a reply to message #312930] |
Fri, 24 March 2017 22:59 |
amdgmcman
Messages: 76 Registered: April 2007 Location: Long Beach, CA
Karma: 0
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Greetings,
Can an APC go bad? I have had one installed on my GMC for quite a few years and just recently the GEN light has come on. Dim ... but on. It is a 78, and I read that GM solved a problem in later models that occurred on earlier models that caused the GEN light to glow dim.The GEN is putting out voltage ... approx 13 volts, so maybe the APC is bad? I had an 100 amp Alternator installed by Miguel at MGM in 2014, so I'm hoping it is not bad.
Comments and suggestions appreciated.
Thanks,
AMDGMCMan
Alan M DeLuccio
78 Royale with
Coachmen,Center Kitchen Floorplan
09 Harley Davidson Street Glide
65 Corvair Monza Convertible
96 RAV4 2 door Manual 4WD
Long Beach, CA
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Re: [GMCnet] Generator light on ... alternator is charging... [message #315095 is a reply to message #315092] |
Sat, 25 March 2017 08:01 |
Mr ERFisher
Messages: 7117 Registered: August 2005
Karma: 2
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Your earlier post said you removed it
Barton told you the alternato volts should be 15 volts
Read here
http://www.gmcmotorhome.info/engine.html#alternator
Is prob not the APC
On Fri, Mar 24, 2017 at 9:00 PM Alan M DeLuccio
wrote:
> Greetings,
>
> Can an APC go bad? I have had one installed on my GMC for quite a few
> years and just recently the GEN light has come on. Dim ... but on. It is a
> 78,
> and I read that GM solved a problem in later models that occurred on
> earlier models that caused the GEN light to glow dim.The GEN is putting out
> voltage ... approx 13 volts, so maybe the APC is bad? I had an 100 amp
> Alternator installed by Miguel at MGM in 2014, so I'm hoping it is not bad.
>
> Comments and suggestions appreciated.
>
> Thanks,
> --
> AMDGMCMan
> Alan M DeLuccio
> 78 Royale with
> Coachmen,Center Kitchen Floorplan
> 09 Harley Davidson Street Glide
> 65 Corvair Monza Convertible
> 96 RAV4 2 door Manual 4WD
> Long Beach, CA
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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Re: Generator light on ... alternator is charging... [message #315110 is a reply to message #312821] |
Sat, 25 March 2017 16:44 |
JohnL455
Messages: 4447 Registered: October 2006 Location: Woodstock, IL
Karma: 12
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He needs to tell us how and where he is metering. 13.6-14.2 is ok after the isolator. Where the 13 is metered is important as the sense to the alternator is after the isolator and 13 minus .7 would cause the lamp to glow.
John Lebetski
Woodstock, IL
77 Eleganza II
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