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Discussion Starter · #1 ·
I have a 2012 V Star 950 that will not start when it is hot. Now when I say it will not start, I mean it will not turn over as if the battery is dead. Only when it is hot this happens. All the lights come on and it goes through a system check when I turn the ignition on. When I hit the starter button all the lights dim and it cranks over maybe once, but will not do anything else. I release the starter button and the lights brighten to normal again. I must let it cool down for 15 to 20 minutes until it will start normal. Once it is cooled down it turns over and starts up no problem. Any ideas?
 

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American Legion Rider
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Sounds to me like you have a battery on it's last leg. Might have a charging problem too if relative new battery. A battery will recover slightly on it's own so letting it cool down is coincidental. Soon it won't turn over when dead cold. Do you know how old it is?
 

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Discussion Starter · #3 ·
Well, I thought about that in the beginning so I had the battery tested. Actually I was stranded near an Advanced Auto one very hot day after riding for about an hour and they installed a new battery and got the same result. So he tested mine and found it was fine. Reinstalled my battery and after some cool down time it cranked over just fine. Something tells me it's a resistance problem. Like a wire, ground, relay or maybe even the starter motor has a weak circuit somewhere and the heat compounds the problem. I was hoping someone has had a similar situation before I start randomly replacing components.
 

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Retired twice: Navy and as a govt contractor
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I had ha Pontiac Firebird that would not start when the engine temp gauge read over 190. As soon as it dropped below 190 it would fire right up. It took a long time to find the problem. It was a dirty brass (or copper) washer on the starter solenoid. Cleaned it up and never had another problem.

So maybe you are on to something, check and clean all your connections.
 

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This is a problem that should be easily solved with a multi-meter.
get the bike hot hopefully return home before turning it off then use the meter to determine where the power is breaking. May be a bad fuse holder or a loose wire it is likely something simple you will need to have an understanding of the flow of power a wiring schematic might be helpful and a basic knowledge of how to use a multi-meter.
 
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