# I'm at a loss, new voltage regulator lasted 10 min. - MVAgusta.net
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Old 09-05-2012, 08:29 PM   #1
jchaplin4
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Default I'm at a loss, new voltage regulator lasted 10 min.

I'm seriously almost done. I started it up after the alternator was fixed and put back in. Ran beautifully. So came in, thought I was done. Went out a couple hours later. Bike would fire, then die immediately. Checked fuel lines, blah blah. Then thought, well this sounds familiar. Let's unplug the alternator. Bike started and ran but poorly. Plugged alternator in while it was running, it promptly died. So seriously what the fing f f f f f f f f f is going on? I'm done with this problem and want to ride.
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Old 09-05-2012, 09:06 PM   #2
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Very sorry to hear. Wish I could help. Hope Carl, Noel, or Dons will be able to help you.
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Old 09-05-2012, 09:22 PM   #3
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Have you contacted the company that repaired it and told them what happened?
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Old 09-05-2012, 09:42 PM   #4
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Something's killing your voltage regulator. Could it be the alternator?
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Old 09-06-2012, 12:13 AM   #5
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Or something to do with unplugging/plugging it back in it whilst the bike is running?
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Old 09-06-2012, 12:55 AM   #6
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Is the problem that its a pain to start? I was thinking of going down the same road as you with an alternator. But, if didn't help and your having the same issue I was also thinking of trying the starter relay. Mine has over heated and melted slightly. I removed it cleaned the contacts and it seems to start better. But I think that might be whats giving me my problems. Have you ever blown and melted the 40amp fuse there?
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Old 09-06-2012, 03:25 AM   #7
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Quote:
Originally Posted by mikef4uk View Post
Or something to do with unplugging/plugging it back in it whilst the bike is running?
I agree Mike...Unplugging/plugging the alternator could cook the diodes in the regulator ?. This has to be a no no.

joe

Last edited by gotojoe : 09-06-2012 at 03:34 AM.
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Old 09-06-2012, 05:59 AM   #8
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It starts fine, strong, no issues. I have never unplugged it while running until AFTER it wouldn't start, so the damage was already done by whatever did it. It will not stay running now at all with it plugged in and runs bad w it unplugged.
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Old 09-06-2012, 06:53 AM   #9
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I hadn't told them yet because it was 8p before I went to leave for a ride and realized I still had a problem. At work today till 3. Next is a new alternator. If that comes off again, a new one is going on as impossible as a job it is to do.
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Old 09-06-2012, 07:07 AM   #10
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I assume you check the alternator with a multimeter before ripping her out?
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