929 electrical flickering/fluctuating - Honda Motorcycles - FireBlades.org
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post #1 of 11 Old 05-19-2013, 12:33 AM Thread Starter
 
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929 electrical flickering/fluctuating

As the title says my 929 recently has developed some weird electrical fluctuation. I just replaced my battery thinking that was the problem, well its not.
The bike fires up, but the headlight will go alternate between bright/dim. I checked the voltage with a multimeter and the charge voltage fluctuates between 11.5-12.3, and the light flicker would correlate with the change in voltage.

I've checked the ohm reading at the 3 pin stator connector and the ohm reading checks out as stated in the honda repair manual.

any ideas?????
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post #2 of 11 Old 05-19-2013, 6:48 PM
 
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Re: 929 electrical flickering/fluctuating

My 929 has done the same for several years. I've just always thought it was the nature of the beast...
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post #3 of 11 Old 05-19-2013, 6:55 PM
 
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Re: 929 electrical flickering/fluctuating

First thing I'd look at is the R/R. You said you checked the resistance on the stator, did you check the AC voltage?

If the bike isn't braking properly, you don't start by rebuilding the engine.
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post #4 of 11 Old 05-20-2013, 4:35 AM Thread Starter
 
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Re: 929 electrical flickering/fluctuating

I checked the AC voltage at the battery, revved to 5k with bright lights on as described in the honda manual. that was when I noticed the fluctuation in the voltage and the light would dim and bright accordingly with voltage changes.

how do I check the R/R?
although I'm not sure if I checked the stator correctly?? The manual says just to check the ohm reading, didn't describe how. So, I put a pos on 1 plug and neg on another, checked all 3 this way.

I watched a vid where a guy had his bike running, grounded his multimeter and checked the stator pins individually with the pos (+) probe on his multimeter.
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post #5 of 11 Old 05-20-2013, 5:01 AM
 
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Re: 929 electrical flickering/fluctuating

Quote:
Originally Posted by medicbaldwin View Post
I checked the AC voltage at the battery,
I hope you mean DC voltage? What were you getting with the engine off, and the the engine running?

The stator has to be tested using AC voltage across the 3 yellow wires.

Have a look at this link:

How to test your motorcycle charging system RiderGroups

If the bike isn't braking properly, you don't start by rebuilding the engine.
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post #6 of 11 Old 05-21-2013, 2:00 AM Thread Starter
 
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Re: 929 electrical flickering/fluctuating

I'll double check the voltage readings again, I may have had the multimeter on ac. I'm very ignorant about using a multimeter and what the different readings are for.

What do you mean "tested using AC voltage across the 3 yellow wires"?

Do I ground one of the probes for the multimeter and use the pos lead and individually check the 3 yellow wires? Or, do I touch 2 yellow wires at the same time using both probes? ie.. neg on one wire and pos on another?

thanks for your help.. i'll check the link.
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post #7 of 11 Old 05-22-2013, 8:17 AM
 
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Re: 929 electrical flickering/fluctuating

touch two yellow wires with each probe.

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post #8 of 11 Old 05-28-2013, 7:41 AM Thread Starter
 
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Re: 929 electrical flickering/fluctuating

I assume I am supposed to check the AC current of the stator with the bike running?
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post #9 of 11 Old 05-28-2013, 8:07 AM
 
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Re: 929 electrical flickering/fluctuating

Quote:
Originally Posted by medicbaldwin View Post
I assume I am supposed to check the AC current of the stator with the bike running?
Yep. You won't get much of a reading without it spinning

If the bike isn't braking properly, you don't start by rebuilding the engine.
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post #10 of 11 Old 06-02-2013, 2:39 AM Thread Starter
 
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Re: 929 electrical flickering/fluctuating

Finally diagnosed the problem. My stator took a crapper on me. the three phases were reading: 3v, 0v, 3v.. and never increased even with the rpm increased.
thanks to OEMcycle.. my new stator is on its way.
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post #11 of 11 Old 06-02-2013, 7:33 PM
 
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Re: 929 electrical flickering/fluctuating

I think you may have had the multimeter on DC when checking it.
Should've had readings around 60 (ish) volts AC can't remember the exact , but it's certainly not 3v. (although the fact that 2 are different to the third could still point to the fault)

Do you know the difference between AC and DC voltage? (not meaning to be rude or anything, just curious)

Quite simply...voltage from the stator up to the Reg/rec is AC , after the Reg/rec it's DC. It will make a big difference to your multimeter readings.

Last edited by Mollari; 06-02-2013 at 7:54 PM.
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