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post #1 of 4 (permalink) Old 07-19-2019, 05:33 AM Thread Starter
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Join Date: Jul 2019
Posts: 8
Perplexing problem

Hi all,
I have a 2006 Sportsman 500 EFI X2. The battery light blinks at higher RPM's. At the higher RPM's, the battery is getting over 17 volts from the regulator. Per the service manual, I started testing the stator. While unplugged and with the engine running, I get from 20 to over 70 VAC depending on the RPM, but the ohm test shows all three legs are shorted to ground. Is this even possible? I'm wondering if my meter is hosed. If it is all shorted to ground, how can it produce ANY voltage? I can't tell if the stator is good (since it's putting out AC) or bad, (since it shows shorted to ground.) Any suggestions would be appreciated. Thank you!
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post #2 of 4 (permalink) Old 07-19-2019, 06:14 AM
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Join Date: May 2014
Location: Illinois
Posts: 4,132
If the stator is shorted to ground, you can be getting AC voltage back-feeding through ground to the battery - if the stator is shorted to ground, you need to replace the stator then recheck the system. The regulator may need replaced also.

Stators most typically short to ground due to overheating or physical damage. Overheating can cause the insulation to breakdown and only one turn of wire on any one pole needs to contact ground for all three windings to test shorted.

Overheating is typically caused by trying to charge an undercharged battery, frequent use of high current accessories and installation of batteries that are larger than the system is designed to charge.

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post #3 of 4 (permalink) Old 07-22-2019, 07:09 AM Thread Starter
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Join Date: Jul 2019
Posts: 8
Thank you for your reply. I ordered a stator this morning. I sure hope that's the only thing bad because the ECM is $600.00! OUCH!!!
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post #4 of 4 (permalink) Old 07-25-2019, 06:56 AM Thread Starter
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Join Date: Jul 2019
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Got the new stator yesterday......that fixed it. Still have no idea where the steel rings came from. Thanks

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