Question about 2002 Honda VT 1100 C2 Shadow Sabre

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NOT CHARGING BATTERY JUST REPLACED REGULATOR RECTIFIER WAS NOT THE PROBLEM

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All fuses must test and be good, including the ones not in the fuse box. The stator has AC voltage out to the regulator, so you are looking for the phase wires from stator to rectifier, isolate them(disconnect them) and read AC volts from these wires(not to ground but to each other) there are 3 different combinations so write down what they are.you need three sets of numbers around 50 Volts AC with the rpms aroung 1500. if you dont get about the same on each of these you are probably looking at replacing the stator.the wires in the stator sometimes loose their protective coating and then develope too much resistance to output enough power to keep your battery full.(try disconnect all ubnessesary add ons) The wires from stator to rectifier often get hot and melt if not kept clean inside the connectors.(look fot wires that have been hot) Reconnect any that have damage.

Posted on Apr 28, 2010

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Posted on Jan 02, 2017

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SOURCE: charging system problem

mattica,

it is very important to check and verify the AC voltage from the stator output. I don't know what your specific spec is off-hand. you can do this with a multi-meter at the ouput plug from the stator where it connects to the voltage regulator. A BAD stator will ruin a new voltage regulator until it is replaced. I just went through the same exact thing.

Posted on May 18, 2009

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SOURCE: Alternator not charging battery on getting 11.5

I had the same problem with my 900 that I just bought, the regulator was fried, so the local kaw shop replaced it with a new one off internet, then it promptly fried the new one, upon further investigation the rotor/armature was reading 1 ohm resistance, supposed toread 4/7 i think anyway, had to have alternater rebuilt , cost 370.00 , works fine now.

Posted on Aug 06, 2009

  • 77 Answers

SOURCE: Replace regulator/rectifier with a different brand?

Not always necessary to change the regulator/rectifier. Check all connections to make sure they are clean, use a good contact cleaner and finish off with dielectric grease on your electrical connections.
When some bikes get a few years on them the connections get dirty. Check to see if there are any burned or discolored wires anywhere around the regulator. The FIX on some bikes is to cut the connector completely out and solder the wires together and either seal them with heat shrink of a good electrical tape. Loose or bad connections get hot. As long as the regulator and rectifier are working there is no need to replace them if the connections are good.
Ride Safely, Ed

Posted on Apr 09, 2010

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By everything, I am assuming you mean the charge coils, regulator/rectifier and the battery? Then all you are left with is wiring. Bad charge coils means low or no output. Bad regulator/rectifier can mean either the regulator prevents the charge from getting to the battery or the rectifier is bad and dumping charge to ground or sending AC (Alternating Current) into the battery, which will kill it is short order. If there is no water in the battery or the plates are shorted, it will not accept a charge.

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My 99 xvl600 Honda transalp is overcharging the battery. I've tried changing thr reg/rect but it still boils battery?


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Battery went dead & I replaced battery with a new battery, wont hold a charge. Is the stater bad?


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Jun 15, 2010 | 1997 Honda VF 750 C Magna

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I have the 02 vfr800 and it keep killing batteries. i think the alternator is dying but others tell me it might be the rectifier regulator. does anyone have a way of testing either or both devices so i...


hi this might help,normally if the alternator/generater fails you will get no charge voltage at all,if your bike is fitted with an alternator(most later honda models are)then you will have a rectifier and regulator,the rectifier converts the ac voltage from the alternator to dc voltage which is then fed through the regulator and then onto the battery,if the bike is fitted with a generator then you will still have a regulator but no rectifier,a generator develops dc voltage at its source so a rectifier is not needed,a simple way to test the system is with a simple digital volt meter,these are very cheap and reliable and can be got for around 20 bucks,with the engine running at about 1500 -2000rpm test the voltage across the battery with the meter normall voltage at charge should be between 13.8 and 14.8 volts,if you are getting more that this then the regulator is faulty,another way to test the regulator is to slowly lift the engine rpm from idle through to about 3 or 4000rpm the voltage across the battery should not rise any higher than about 14.2-14.8 and it should reach its peak at about 2-2500rpm and not fluctuate more than about 1 volt across the rev range,if the voltage exceeds about 14.8 or fluctuates excessively with engine revs then the regulator needs to be replaced.hope this helps...cheers ian

Feb 06, 2010 | 2002 Honda VFR 800

2 Answers

My battery wont charge and I just bought it


Hi and welcome to FixYA,

Two possibilities:
  • rectifier / regulator combo (most likely);
  • corroded, burned, loose connection from the stator to the regulator (likely);
  • faulty stator (least likely).
The stator would be producing relatively high AC voltage while revving the bike. The stator output AC voltage are fed to the rectifier / regulator through 3 white wires. Check calls for testiing for the presence of the AC voltage on any pairing of the white wires before and after the connector before the voltage regulator. Check on the regulator calls for checking the battery voltage when revving the bike (14.5 VDC).

Good luck and thank you for asking FixYa.

Jan 04, 2010 | 2002 Yamaha YZF Thunder ace 1000 R

1 Answer

I have a CBR 1000F 1993 it charges fine when


I had the same thing happen to my CBR1100XX..

Could be both the stator/alternator or the regulator/rectifier. I'd try replacing the cheapest unit (regulator/rectifier) first. Check if the insulation on the wires going to the regulator/rectifier look burned.

FYI most Hondas are prone to charging problems.

Sep 02, 2009 | 1993 Honda CBR 1000 F

1 Answer

Battery wont charge the battery is ok but during the day its like the bike is not charging the battery and the bike wont start i heard that the leads between the regulator to the battery could be worn,help...


The most common problem is the 3-wire connector being burnt between the stator and regulator/rectifier. It has also been commonly reported that the regulator/rectifier and/or stator may need replacement.

Apr 24, 2009 | 1998 Honda VFR 800

2 Answers

Flat batery


The 2004 models have a problem with their generator stator.They have the light always on and the generator tries all the time to charge the battery in low rpm but is not enough so the regulator/rectifier fails, then the generator fails and of course the battery.You have to check the whole charging circuit and if you need to replace the generator stator purchase the 2005 part.It fits and it is improved.New regulator/rectifier and of course new battery.After you have finished install a small switch somewhere at the upper side of your front forks so that you can switch off the lights when ever you can.

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