Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums - View Single Post - Odd voltage issue
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post #17 of (permalink) Old 08-11-2014, 03:09 PM
..have a vulcan good day!
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Join Date: May 2011
Location: Pensacola, FL.
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Originally Posted by kagaku View Post
Alright so the quick and dirty hacked together volt meter worked. I rode about 5 miles, everything was fine the first mile or so, and then suddenly my voltage went nuts, jumping around between 10 and 18-19 volts. I almost thought I had a loose connection, but then it leveled out....at 18.7-19.2 volts when riding.

When I stopped at a light and kicked it into neutral, it went down to 13.1 to 14.3 volts. This fluctuated, but never went above 14.3 when idling in neutral.

As soon as I'd take off and hit 3rd gear, 18-19 volts. Anything over 18.5 volts and I'd get the crazy RPM gauge when revving the engine. At 18-18.4v, the bike rides ok, but sounds "off".

Gonna try it again tonight and see if the voltage spikes correspond to when my lights brighten. I'm assuming they do.

Does this mean I have a bad R/R? I'm also going to assume here; I probably need a new one.
without re-reading the whole thread....check out ALL your electrical connections....Remove & Clean ALL grounds....check connector at R/R....Clean Contacts ! 18-19 volts can/will fry your electronics / battery !
... have you checked the Stator AC voltage output ?

EDIT: Did I mention Remove and CLEAN ALL Grounds ? LOL

'86 VN750 13,700 mi -Stock
-Purchased 2008 w/8800mi
Replaced ALL Cables . Kuryakyn LED Voltmeter
SilverStar Ultra 9003/HB2 H4 Headlamp, Jardine Fwd Controls,
Iridiums DPR7EIX-9 & Wires, Tuxedo Mod, Coil Mod, P/U Sensor Mod, Fork Seals,
Splines Lubed - 11/4/2012 - MF AGM Battery
Additional Flashing LED Brake Light on Trunk
Dampers went out @ 13+K !
After TOC MCCT's..... so amazingly quiet I discovered a rattling heat shield on my stock exhaust !
...have a vulcan good day!

Last edited by WilliamTech; 08-11-2014 at 03:19 PM.
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