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Old 09-19-2019, 12:25 PM
elgranjefe elgranjefe is offline
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Join Date: Jul 2005
Location: Danville, IL
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Charging Issue

Hello XSers,
79 XS1100: Bike wouldnt start, had electrical shop fix it, found a broken wire. Now, bike will run but dies after warming up. Bike is getting barely 12 volts at 3K RPMs. Is that normal? Any ideas where to look for fix?

Thanks,

Jeff
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"elgranjefe"
1979 XS 1100 Standard
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Old 09-19-2019, 01:03 PM
motoman motoman is offline
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Quote:
Originally Posted by elgranjefe View Post
Hello XSers,
‘79 XS1100: Bike wouldnt start, had electrical shop fix it, found a broken wire. Now, bike will run but dies after warming up. Bike is getting barely 12 volts at 3K RPMs. Is that normal? Any ideas where to look for fix?

Thanks,

Jeff
I suggest starting with battery. P,ut a 1amp charger on batt. for a few hours, then check batt. voltage. should be at 12.8-13.1 volts. If that checks out good, key on, no running bike, unplug and check stop/run switch at its plug-in. Should be the same as batt. This COMPLETES the electrical running circuit. If not, remove stop/run switch, dissasemble and clean those brass contacts as THIS switch completes the running circuit and contacts NEED to be clean and IS a common voltage failing area. This IS a good starting point, and let us know what you find out before continuing.
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81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

Last edited by motoman; 09-19-2019 at 01:08 PM.
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Old 09-19-2019, 01:21 PM
motoman motoman is offline
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BTW, plug-in for stop/run switch is under fuel tank against right top frame rail.
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81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.
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Old 09-19-2019, 01:51 PM
elgranjefe elgranjefe is offline
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Will do....thank you!
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"elgranjefe"
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  #5  
Old 09-19-2019, 05:15 PM
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skids skids is offline
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I suggest that you check and clean the clip connector behind the fuse block. There is a 4 wire clip there from the stator (generator) that is prone to corrosion and once that happens, one or more contacts will arc and get real hot. The clip will be 3 white wires and one yellow, although the yellow one usually looks white as well.
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