Question about 2002 Yamaha V Star 1100 Classic

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Charging system on 2002 yamaha v star.

Is there any to check the voltage regulator on this bike?

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I posted back in your initial post here. A few ideas to consider/try:

  • normally, there would be 3 wires coming from the stator going to the regulator;
  • AC voltage measured on any pairing of these wires would be higher than 12 depending on the RPM above 1200;
  • DC voltage output would tend to vary from 12 to 13.8/14.2 depending on the RPM;
  • the best check would be to install temporarily anammeter inline with the wire coming from the regulator going to the +terminal of the battery. With this, the presence/absence of thecharging current could be checked.
Cheers.

Posted on Feb 13, 2009

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MY YAMAHA SR 150 MODEL 2002 , THE BATTERY IS NOT CHARGING EVERY TIME I BUY NEW BATTERY IN FEW DAYS IT WILL DISCHARGE OR DRAIN THE BATTERY POWER


there is a regulator rectifier assembly that rectifies the ac coming from the stator and then regulates the voltage to both charge the battery and run accessories and lights....if you can obtain a voltmeter, try starting the bike and measure the voltage on the battery..it should be about 14V DC with the bike running...if not then switch the meter to AC and check the leads coming from the stator(they are the leads that come out from under the clutch cover)...the measured voltage from the stator should be around 30v AC and will go higher when you rev the engine....if this voltage is not present then the stator is defective...if it is then the rectifier/regulator is probably bad...also, make sure that all the fuses are good

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On an 1100 V star why would the charging system work perfectly for about 10 min. then quit charging. I charged the battery, checked the voltage had 13.72 volts before start up. apon turning on the key...


first thin is to clean up all contacts neg and pos, coild be one is loosing contact due to heat, nest step is monitor cahrge rate at alternator when drop occurs , if so then it is probably internal

May 15, 2011 | 2001 Yamaha V Star 1100 Classic

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Where is the voltage regulator on a 2002 yamaha v star xvs1100


Hi, Rogers2006 for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Charging System Star 1100 Wiki Knowledge Base
yamaha star 1100 classic voltage regulator location Google Search
http://www.sloneservices.com/SilverBack/Other-Stuff/V-StarShopManual99-07.pdf
OEM parts for Yamaha
http://www.starmotorcycles.com/assets/service/manuals/2000/LIT-11626-13-36_96.pdf

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Good evening sir, I have yamaha R1 bike. in bike yesterday battery discharge than charge the battery. today bike start and running but after .5 miles bike is stop running, self is not running and battery...


1998 to 2002 have problem with plug to voltage regulator/rectifier which is under seat. connectors in plug overheat and bike stops charging the battery. you will see if connectors have been hot and will need to be replaced if they have.
once replaced check bike charging with multimeter at battery,should make 13.5 - to 14.5 volts just above idle. if not will need to test stator and regulator.

Aug 11, 2010 | Yamaha YZF-R1 Motorcycles

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My bike is a 2001 1100 v star that seems to be eating batteries all of a sudden. I was on a ride 2 moths ago and the bike started skipping under a load and when I stopped to check it out it shut off and...


My initial thought is you haved a faulty voltage regulator. You should be charging at about 15 volts, but when your battery gets charged, the voltage regulator should turn the charge system off.

Your battery is hot ... you are over charging.

Im sorry, I dont know where your regulator is located.

I hoped you find some value in this comment.

a

Oct 04, 2009 | 2001 Yamaha V Star Custom

1 Answer

The wires going to the voltage regulator keep burning up.


Common problem with poor quality parts, the regulator is the problem, the generator is working other wise you would not have fried the wiring, you answered your own question. someone telling porkies to get more money from unsuspecting client?
The regulator controls the voltage not the generator, the generator only supplys the voltage it cannot overcharge unless the regulator is not working properly, simple!

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1 Answer

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If you take a look at the parts microfiche (make sure this is your bike please), the voltage regulator and rectifier is a little under $70. Labor for installing it would probably be in the $200-300 dollar range at a dealer.

Have you checked the voltage while the bike is running? It could be that the lights are simply drawing more power than the charging system can put out. Put a voltmeter on the bike and start it. Rev engine to 2-4000 rpm (or just ride the bike if you can see the meter while riding). Check with extra lights off and extra lights on. If your voltage is 14+ while riding or reving the engine without the extra lights on I think your charging system is probably OK. If it is below 13 (again, without the extra lights on) I say the charging system is bad.

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What would cause the battery to heat up so hot that it would boil


Failed voltage regulator could do it too. If you can start the bike, put a voltmeter on the battery or charging system output. Should be around 14-15 at 3000 rpm. If it is much over that your voltage regulator is probably bad. Sometimes those regulators overcharge when they heat up too, if yours is in a location that does not get much airflow it may be possible to relocate it somewhere more "in the wind".

Apr 06, 2009 | 2002 Yamaha V Star 1100 Classic

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