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 Post subject: What did I fry?
PostPosted: Thu Mar 09, 2017 5:30 pm 
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Joined: Thu Mar 09, 2017 5:24 pm
Posts: 1
My battery was dead and it wouldn't push start, so I got a jump from a car. Now it runs like crap. What did I more than likely fry?


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 Post subject: Re: What did I fry?
PostPosted: Sat Mar 11, 2017 2:27 pm 
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Joined: Tue Oct 08, 2013 6:31 pm
Posts: 42
It's possible that you damaged the solid state ignition module. If the engine backfires, misses, and does not run smooth, the module is a good candidate. The bad news is that you can't check it easily. You have to buy a new one and replace it.
I ran into a similar situation with my XR650L. I boosted it from a car battery and almost immediately the ignition system started to break down. If I ever need a boost in the future, I will always disconnect the positive terminal on the bike battery, let the bike battery normalize a few minutes with the charged battery, reconnect the bike battery and attempt a startup.
I don't know why a boost from another 12vcd battery would damage the module, but there have been many reports of similar issues from the automotive sector.


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 Post subject: Re: What did I fry?
PostPosted: Fri Mar 24, 2017 6:17 pm 
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Joined: Tue Jul 22, 2014 6:13 pm
Posts: 74
Location: Long Island, NY
Or something else died or partially died and jump starting the bike had nothing to do with it. Keep in mind that if the battery is under 7V, the bike will run like a three legged dog... lousy :shock:

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Brian
1997 Honda PC-800
1980 Honda CB750F
1982 Honda CB900F
1977 Honda GL 1000


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 Post subject: Re: What did I fry?
PostPosted: Fri Mar 24, 2017 7:17 pm 
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Joined: Fri Sep 26, 2014 10:07 am
Posts: 151
Actually, if the battery voltage drops below 9.5, it simply won't run at all. BTDT.

Bob Carr
Stem NC

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Bob Carr
Stem NC
IBA #56949


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 Post subject: Re: What did I fry?
PostPosted: Tue Apr 11, 2017 11:17 am 
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Joined: Thu Jul 25, 2013 9:55 am
Posts: 2
I had similar thing happen to me recently. There is a big relay underneath the seat. It carries 30A fuse and I'm betting yours is blown from jumping incident.
I started mine for the first time since I put it away last fall. Hard start and sluggish battery so I jumped it. Started fine and ran. But when I got to the destination after about an hour of riding battery was all but dead. Barely turned over and I could not push start it.
With voltmeter I was able to trace to a break somewhere under the seat and found the relay and hidden 30A fuse under a RED connector. Spare 30A fuse is visible from outside, the real fuse is hidden inside the RED connector.
Seat is easy to remove with two 12mm bolts.


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