zx9vfr800 Posted July 3, 2016 Share Posted July 3, 2016 So riding my new to me 5th gen for the first real road test battery went dead......Need to know how to go about repairing charging system. I am sure there is a topic already started on this but looked for a long time and did not find what I was looking for. I know the the 5th gens have an issue with the rectifier but how do I test it and how do I fix this issue, my first 5th gen I put 56,000 miles on and never had a issue outside of replacing a battery. I need to get this fixed asap. So if any of you fine people out there can kindly show me the way that would be GREAT!!!!!!!!!!!!! Thank you in advance Link to comment Share on other sites More sharing options...
Member Contributer mello dude Posted July 3, 2016 Member Contributer Share Posted July 3, 2016 Look at your stator connector and go buy a multi meter and check voltage across the battery at idle and 5000 rpm as a first step. What is the mileage on this one? Link to comment Share on other sites More sharing options...
zx9vfr800 Posted July 3, 2016 Author Share Posted July 3, 2016 33,000 miles Link to comment Share on other sites More sharing options...
zx9vfr800 Posted July 3, 2016 Author Share Posted July 3, 2016 So I removed the rear cowl today check all of the connectors, all are fine. Charged battery and test output and found output to be 12.5 volts that is not enough... What do I test next and does that mean the rec. is bad? Link to comment Share on other sites More sharing options...
Member Contributer MadScientist Posted July 3, 2016 Member Contributer Share Posted July 3, 2016 When you say "charged battery", I assume you mean with a battery charger. How did you measure that 12.5v? Is that just the battery, not connected to anything? Was the bike running? If so, how many RPM? Link to comment Share on other sites More sharing options...
Member Contributer Cogswell Posted July 3, 2016 Member Contributer Share Posted July 3, 2016 A dead battery does not necessarily mean the charging system is shot. Batteries die with age, vibration and normal wear and tear even if being charged properly while riding. They have a life span like anything else. The baseline of all charging system diagnosis is a healthy battery. Have it load tested - Autozone, Batteries Plus and many others will do this for you for free. If bad, replace. Once the new one is installed, check your voltage across the battery at idle and 5,000 rpm. If less than the low 14v area, go to the electrical forum and see the pinned threads on diagnosis and repair. It's not really all that bad if you are methodical and follow the instructions step by step. Good luck with it. Link to comment Share on other sites More sharing options...
zx9vfr800 Posted July 4, 2016 Author Share Posted July 4, 2016 First battery went dead in traffic ran into wall mart got new one, took bike for ride and all gauges went to zero then bike stopped running. Had bike towed home, (the next morning found that they had bent my handle bars good times) charged battery, reinstalled in bike started bike, started bike, put tester on battery while running at idle and at 5000 rpm still only got 12.5 volts out of it..... Link to comment Share on other sites More sharing options...
Member Contributer Cogswell Posted July 4, 2016 Member Contributer Share Posted July 4, 2016 So no charging at all . . . Time for "The drill" in the pinned posts - stator tests, inspect connectors, the works. Oxgard is a big help in keeping connectors healthy. Good hardware stores often have it. Link to comment Share on other sites More sharing options...
Member Contributer JZH Posted July 4, 2016 Member Contributer Share Posted July 4, 2016 Well, the good news is that your battery should be fine! (Both of them...) Ciao, Link to comment Share on other sites More sharing options...
Member Contributer MaxSwell Posted July 4, 2016 Member Contributer Share Posted July 4, 2016 Good luck with the well-known electrical issues with your fifth gen. Wire My Bike dot com sells a VFRness that is a good start along with a better r/r. That's the basis for my well performing fifth. +1 for for "The Drill". Link to comment Share on other sites More sharing options...
zx9vfr800 Posted July 4, 2016 Author Share Posted July 4, 2016 Has anyone ever use a rectifier from Eletrosport out of cali? Link to comment Share on other sites More sharing options...
GleninAus Posted July 5, 2016 Share Posted July 5, 2016 When you replace the regulator, note that most of the 2000 model VFR's will have 8 wires. ( 3 yellow, 2 red, 2 green and 1 black) Also, install a volt meter. It becomes a simple VFR pleasure to see 14.8V looking back at you on a long ride in the middle of nowhere. Link to comment Share on other sites More sharing options...
zx9vfr800 Posted July 6, 2016 Author Share Posted July 6, 2016 Any ideas where to get one that fits well? Link to comment Share on other sites More sharing options...
Member Contributer Mikey Posted July 6, 2016 Member Contributer Share Posted July 6, 2016 I got an R/R from roadster cycle.com, the shinedengen FH020AA. You will need to do some soldering and I drilled out two new holes in the factory mounting location to mount it. You should check into stator output as well as the stator may have overheated as the one in my 1999 did. Link to comment Share on other sites More sharing options...
CandyRedRC46 Posted July 6, 2016 Share Posted July 6, 2016 On 7/4/2016 at 0:31 PM, zx9vfr800 said: Has anyone ever use a rectifier from Eletrosport out of cali? Yes, they (electrosport) charge around 18 volts, this is excelent if you want to turn your bike into a mobile camp fire, but not a good idea if you want to keep riding your bike. You definitely want to stick with oem stators and newer shindengen rr's like the fh020aa or the sh847. The RR's can be purchased from www.roadstercycle.com The stator can be purchased from www.servicehonda.com Stay away from chinese garbage like electrosport Link to comment Share on other sites More sharing options...
zx9vfr800 Posted July 7, 2016 Author Share Posted July 7, 2016 Thanks for the info everyone, now to just to free up the funds to buy parts.... Link to comment Share on other sites More sharing options...
Member Contributer mello dude Posted July 7, 2016 Member Contributer Share Posted July 7, 2016 Also check www.procaliber.com for good prices on parts. Link to comment Share on other sites More sharing options...
Member Contributer RolandHTG Posted July 19, 2016 Member Contributer Share Posted July 19, 2016 On 7/7/2016 at 3:40 PM, zx9vfr800 said: Thanks for the info everyone, now to just to free up the funds to buy parts.... A $20 Ebay RR from a Yamaha R1 cured my 99 VFR chargiing problems. It did require a custom wiring harness but that is a good idea anyway Link to comment Share on other sites More sharing options...
CandyRedRC46 Posted July 20, 2016 Share Posted July 20, 2016 Just make sure its a $20 oem R1 regulator and not a $20 chinese regulator made to fit an R1. Link to comment Share on other sites More sharing options...
Leeroth Posted July 20, 2016 Share Posted July 20, 2016 So riding my new to me 5th gen for the first real road test battery went dead......Need to know how to go about repairing charging system. I am sure there is a topic already started on this but looked for a long time and did not find what I was looking for. I know the the 5th gens have an issue with the rectifier but how do I test it and how do I fix this issue, my first 5th gen I put 56,000 miles on and never had a issue outside of replacing a battery. I need to get this fixed asap. So if any of you fine people out there can kindly show me the way that would be GREAT!!!!!!!!!!!!! Thank you in advance I dealt with this a few years back. Pretty much a pain in the but until i bought a vfrness from wire my bike and also replaced my r/r with an updated one from Rick's motorsports. I also hooked up a voltmeter so i can see voltage all the time. My bike charges at 14.2 right around 4000 rpm. I have long since forgotten all the charging issues. A moderately expesive upgrade but well worth the time and energy troubleshooting. Link to comment Share on other sites More sharing options...
Member Contributer TomP Posted July 21, 2016 Member Contributer Share Posted July 21, 2016 Leeroth, go to the Electrical section under Modifications and take a look at the first 3-4 pinned threads. That should refresh your memory! Good luck. Link to comment Share on other sites More sharing options...
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