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Old 05-07-2008, 11:57 PM   #1
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Question Bike die on me while riding

Okay, lemme try to explain this as best I can.
I was riding this evening and my tachometer started flicking up and down +-2000 rpm, but the engine certainly was not doing that, also the headlights started fading and flickering. Then all of a sudden all my guages and instrument panel went completely out...dead. But the bike seemed to be riding fine, until it started to putter violently. I pulled onto the shoulder, slowed down by just coasting. Down shifted a few and gave it more gas...then the biked seemed to come back to life, engine, guages, lights, everything was operating normally again. So I made it to my destination. I figured a wiring connection or harness was just a lil' loose, but worked itself back together???
N-E ways, about two hours later, the bike started up just fine, ran just fine. I almost made it home when the gauges and lights started to flicker again. Then followed by that violent engine putter again like the spark plugs weren't creating a good enough spark, or gas simply wasn't getting to the engine, but it's carburated. So, this time the bike died on the shoulder, and wouldn't start back up, the lights barely came on, and the starter just clicked.
Is it just my bat that is need of replacement, or do I need to investigate all the wiring and harnesses. BTW, it is on the charger and I'll try it in the morn.
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Old 05-08-2008, 12:00 AM   #2
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sounds like loose or melted wiring somewhere.....

maybe tip over sensor (not even sure if your bike has one)?
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Old 05-08-2008, 12:01 AM   #3
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sounds like youre on the right track. check the battery and make sure the terminals are clean. then move on from there.
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Old 05-08-2008, 12:02 AM   #4
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Quote:
Originally Posted by houseofpain View Post
sounds like loose or melted wiring somewhere.....

maybe tip over sensor (not even sure if your bike has one)?
I was afraid of that, nothing obvious though just looking around.
But whats a tip over sensor...I was riding straight up and down.
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Old 05-08-2008, 12:03 AM   #5
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Quote:
Originally Posted by matemike View Post
I was afraid of that, nothing obvious though just looking around.
But whats a tip over sensor...I was riding straight up and down.

hahahaha. sorry, that comment made me LOL.


your tip sensor is what shuts the bike off if it were to ever lay over. he was saying it may be malfunctioning as well.
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Old 05-08-2008, 12:10 AM   #6
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I'm no mechanic, but it sounds like a stator generator alternator. Found one on ebay for you if you like
Linky:
http://cgi.ebay.com/ebaymotors/Yamah...mZ290217224801
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Old 05-08-2008, 12:14 AM   #7
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Quote:
Originally Posted by tiatool View Post
I'm no mechanic, but it sounds like a stator generator alternator. Found one on ebay for you if you like
Linky:
http://cgi.ebay.com/ebaymotors/Yamah...mZ290217224801
I was thinking the same thing, but it seems kinda hard to say what is really causing the problem. . .
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Old 05-08-2008, 12:18 AM   #8
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Hmmm sounds like a serious case of Yamaha HA HA HA...ok just kidding...well maybe a little....sounds like a power to ground.....If I'm not incorrect there should be a main power relay between your starter button and your starter....check this....someone please correct me if I'm wrong ???
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Old 05-08-2008, 12:20 AM   #9
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Quote:
Originally Posted by tiatool View Post
I'm no mechanic, but it sounds like a stator generator alternator. Found one on ebay for you if you like
Linky:
http://cgi.ebay.com/ebaymotors/Yamah...mZ290217224801
I'm thinkin the same. Electrical problems suck, but you'll find the culprit sooner or later. Good luck.
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Old 05-08-2008, 12:25 AM   #10
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Thanks all, the thing that really sux is that i cant tackle this chore for 4 weeks...i gotta go offshore in the morn
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Old 05-08-2008, 06:24 AM   #11
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loose connections or grounds..
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Old 05-08-2008, 06:29 AM   #12
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Sounds like a Suzuki you sure you have a Yamaha?
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Old 05-08-2008, 07:35 AM   #13
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Check your Voltage Regulator, Stator, Battery, anything in the charging system. Might be a loose connector somewhere, but that would have to be a major connector to affect everything like that. Melted (insulation) wires shorting out will usually result in a blown fuse and not just start working again.

I'd start by having the battery load tested, then check the voltage output from the regulator. It should be between 13.5 and 14.4 volts while the engine is running. If it's low, but you are able to get the volts up by revving the engine up, then either the stator or the regulator is bad. I had some troubleshooting steps for this, but I don't know where I left them. I had to go through the same thing with my old Honda. In that case a remanufactured stator fixed me up.
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Old 05-08-2008, 07:54 AM   #14
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well well well, after it charged for about 6 hrs, I just had to try starting it on my way out the door this morn. It fired right up! Ran for 5 min, then I turned it back off and locked up the keys for a month. My buddy is going to leave it on charge until this afternoon. Hopefully it was just a low battery...does that seem possible?
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Old 05-08-2008, 08:01 AM   #15
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Yeah, a low battery because either 1. the charging system isn't sufficiently charging or 2. the battery is going out and is losing capacity. I'm guessing there's a problem with your charging system.

Under normal operating conditions, your charging system will keep your battery charged AND provide sufficient power to run all of the stock electronics in the bike. Get it checked out or it'll leave you stranded again. Have the battery tested too since that is cheap and easy.
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Old 05-08-2008, 08:08 AM   #16
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So is a charging system like an alternator in a car or truck?
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Old 05-08-2008, 08:26 AM   #17
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Quote:
Originally Posted by matemike View Post
So is a charging system like an alternator in a car or truck?
thats what the stator does
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Old 05-08-2008, 08:28 AM   #18
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same situation was happening with me but not to that extent. I was experiencing the violent sputting once the bike got warmed up. There is a break down in your wiring harness somewhere. Motorcycles Unlimited found and fixed mine for $150 or something like that....Motorcycles Unlimited FTW
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Old 05-08-2008, 09:02 AM   #19
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Quote:
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So is a charging system like an alternator in a car or truck?
Yes and no. An alternator is (large) part of an automotive charging system. On modern cars, it includes a stator, a rotor, and a voltage regulator/rectifier. Usually in a car, if one component goes out, you just replace the whole thing. Bikes a lot of times will have the stator and rotor on the end of the crank or nearby to make the setup more compact and you can replace the components separately.

A Short Course on Charging Systems
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Old 05-08-2008, 09:03 AM   #20
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You need to check the entire charging system out, starting with wiring, grounds, battery connections etc. You have a bad connection somewhere for sure..... A tip over sensor is not going to make your dash lights go out. Your battery itself could be shorting out a cell inside...... The reason your bike is dying is not from not getting fuel probably, its more from not getting spark because the CDI box is not getting power.

Just start checking everything out, its not going to fix itself. I bet its a ground problem, probably the main ground from the battery to the motor/starter/frame.
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