1993 VFR 750 - Electrical Problems

Reon

New member
here is me and my bike YouTube - ‪'93 Honda VFR 750F Revving at Lake Simcoe‬‏

I just bought this beauty a couple of months ago. The bike runs well enough but I'm having some electrical issues which usually crop up in stop and go traffic - when the fan/radiator is running almost constantly.

Basically, it seems as though the engine sparking and radiator are competing for electricity, and its not being delivered from the battery properly. After prolonged (30 mins or so) running under these conditions, the ignition starts to cut out. I charged and recharged the battery, which according to the seller was about 2 years old. Last week I was left completely stranded with no electrical response at all, not even a single light on the dash. I brought it to a local (toronto) reputed mechanic who got it running again (with the help of 300$), but since then I've experienced the engine quitting 1 time, while commuting home.

The mechanic was sort of vague about what the nature of the problem was, but said he fixed some starter solenoids and there were some problems with the alternator. He also mentioned that it appeared somebody had done some of their own rewiring inside and had "messed it up".

I'm feeling that I was either taken advantage of by the mechanic, or else he just didn't understand the exact nature of the problem and just replaced a few parts. I can't afford for this bike to become a money pit. I'm worried about taking the bike out for anything more than a leisure trip because of getting stranded again.

Does anybody have any advice or can recommend a trustworthy mechanic who specializes in electrical systems in the GTA area? Would really appreciate it.​
 
If you haven't already check our www.vfrworld.com and/or www.vfrdiscussion.com for lot's of vfr help. I know 5th and 6th gen models had regulator/rectifier issues but I've never looked into the 3rd gen ones.

+1

The guys on VFRD are simply amazing in helping someone out with problems.. I would start there as it's pretty bike specific! Good luck!
 
I picked up a '91 last year and had the same problem. Wouldn't charge the battery and would only run for an hour and then die. If the battery isn't holding a full charge it leads to the stator not charging properly or overcharging or the regulator rectifier not handling the voltage properly or any combination thereof. The only problems with that bike are the voltage regulator/rectifier, stator and battery. I replaced my regulator/ rectifier with one from a R1 they are mosfet circuitry and tend not to fail. Have you noticed that it gets extremely hot under your ***** when you ride for more than an hour?
 
My bet is on the voltage regulator/rectifier.
Yeah? I say battery.
Charge the battery and then load-test it, I bet it flunks spectacularly.
But whatever it takes, get 'er fixed, top-quality all the way...
I had a new 1983 in 1983. But yours sounds better,
L8R
 
the seller told me that the reg/rect was replaced about 3 years ago. Would anyone imagine that's how often it needs to be replaced?

Anyways thanks everyone for the love and feedback, I'll try to apply what insight you've given me. I should actually get a volt meter, then I could test the various connections.
 

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