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Discussion Starter #1
So soon after purchasing my bike last year it began having starting problems. Realized my battery is being charged. Skip to today... have been doing some trouble shooting trying to figure out which component is causing my problems.

Using this thread: http://www.vn750.com/forum/showthread.php?t=24093


Next set your meter to VAC,200 or less.Remember I mentioned AC output,we are now going to test that.Start the bike ( you should have the battery fully charged before testing your charging system BTW) warm up the engine to normal operating temperature. This next part is easier with a helper,but you can do it by yourself.run the engine up to around 3K RPM's and check between any and all combinations of the three leads from the stator,you should have between 40 to 70 VAC .Is the voltage up to snuff ? It may be a little more but it's doubtful unless you have one that has been rewound as heavy duty or high output.Did it pass the test?In order to pass it must have proper voltage between all combinations of A1,A2 and A3,if one combination is very low or no voltage at all you have a bad stator.If it is good ,time to move on.

^^^I got to this test where A1 to A3 failed the test, while all other combinations gave me around 50 VAC.

Also i did a Charging System Output Voltage Test from my Clymer manual where i hooked up my voltmeter to the chassis ground and the positive terminal connector. When doing this test i found that at 3k rpms i was reading 12.4 but when removing the top two fuses(headlight and accessories) that it went up to 13.4.

So, im not sure where to go from here. Any suggestions figuring this out would be extremely helpful to getting my back on the road

Thanks
Stephen
 

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Just did another test from my Clymer manual. I was testing the 3 yellow wires from the stator for resistance and continuity. They showed no resistance to ground but when testing them to each other for continuity they value was .8-1 and checking in my Clymer manual the values should have been .34-.52.


To me it seems like my Stator is defininetly the problem, yes?
 

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Am I on the right track here guys and gals? Buying alot of parts for the stator job and wouldnt want to do the job for nothing.
 

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Am I on the right track here guys and gals? Buying alot of parts for the stator job and wouldnt want to do the job for nothing.
Yes, it seems your stator went south.

It seems to have lost one phase on it .the two are putting out minimal power through the R/R and showing voltage with other loads unplugged.The other two phases will fail soon.Time to change it out before you damage your r/r as well
 

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Yes, it seems your stator went south.

It seems to have lost one phase on it .the two are putting out minimal power through the R/R and showing voltage with other loads unplugged.The other two phases will fail soon.Time to change it out before you damage your r/r as well
I appreciate the input, I needed some confirmation to start cutting apart my bike.
 

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Those 3 yellow wires often go bad though....mine did....try replacing them using soldered splices and the next gauge up wire. If the issues are still there, yup, what Denny said...Id try the cheap and easy way out first, but thats just me...
 

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Those 3 yellow wires often go bad though....mine did....try replacing them using soldered splices and the next gauge up wire. If the issues are still there, yup, what Denny said...Id try the cheap and easy way out first, but thats just me...
The 3 yellow wires with bullet connectors? Where would I replace them? I took my readings directly from the bullet connections with them unplugged. They're solid back to the stator.
 

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The 3 yellow wires with bullet connectors? Where would I replace them? I took my readings directly from the bullet connections with them unplugged. They're solid back to the stator.
That's all you can check . If your readings were taken there,it is the stator. Cheap and easy fixes are out now.
 
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