Possible stator issues?
Possible stator issues?
Ok so here goes lemme try to explain the issue and maybe someone smarter than I am can give me some much needed info.
But first let me tell you what Im dealing with, I have an 06 street bob. For the last two weeks every time I hit 100 mph, my check engine light comes on. As soon as I back off the throttle it goes out? I found that both weird and interesting but couldnt figure out any reason for it.
Fast forward to yesterday and I was riding down the highway at a normal speed and both the check engine light and battery light came on.
As soon as I cut it off it wouldnt start again. I push started it and limped it home.
i figured it had to be the battery, stator, or regulator. So I started some testing. I charged the battery fully and tested, battery appears good. I went to check the stator and this is the first time Ive seen one with 3 wires? Usually I test across the 2 wire for ac voltage and resistance. Without finding any info on the 3 wire setup I tested the resistances of the 3 different pairs that could be possible. Im seeing 100.3, 95.4, and 13.1 ohms on them. I figured thats not good and the stator is the problem, is that correct or is there a different test for a 3 wire stator? I have not checked the voltage regulator yet since the i could not get a good result on the stator leads? Any opinions, thoughts?
thanks.
But first let me tell you what Im dealing with, I have an 06 street bob. For the last two weeks every time I hit 100 mph, my check engine light comes on. As soon as I back off the throttle it goes out? I found that both weird and interesting but couldnt figure out any reason for it.
Fast forward to yesterday and I was riding down the highway at a normal speed and both the check engine light and battery light came on.
As soon as I cut it off it wouldnt start again. I push started it and limped it home.
i figured it had to be the battery, stator, or regulator. So I started some testing. I charged the battery fully and tested, battery appears good. I went to check the stator and this is the first time Ive seen one with 3 wires? Usually I test across the 2 wire for ac voltage and resistance. Without finding any info on the 3 wire setup I tested the resistances of the 3 different pairs that could be possible. Im seeing 100.3, 95.4, and 13.1 ohms on them. I figured thats not good and the stator is the problem, is that correct or is there a different test for a 3 wire stator? I have not checked the voltage regulator yet since the i could not get a good result on the stator leads? Any opinions, thoughts?
thanks.
HDF Community Team
Joined: Aug 2018
Posts: 3,011
Likes: 1,190
From: New Hampsha
Yes, if all three wires are stator wires, the resistance between any two should be pretty much the same. However, you should be getting readings between 0.1 and 0.2 Ohms, not 100 or 13 Ohms.
Did you check the system voltage before you started taking things apart? It should be about 14.5 volts at 3000 RPM. The fact that you saw issues at high speeds leads me to believe it could be over charging.
Oh, the AC output spec is 16-23 volts per 1000 RPM measured on each pair.
Did you check the system voltage before you started taking things apart? It should be about 14.5 volts at 3000 RPM. The fact that you saw issues at high speeds leads me to believe it could be over charging.
Oh, the AC output spec is 16-23 volts per 1000 RPM measured on each pair.
Yes, if all three wires are stator wires, the resistance between any two should be pretty much the same. However, you should be getting readings between 0.1 and 0.2 Ohms, not 100 or 13 Ohms.
Did you check the system voltage before you started taking things apart? It should be about 14.5 volts at 3000 RPM. The fact that you saw issues at high speeds leads me to believe it could be over charging.
Oh, the AC output spec is 16-23 volts per 1000 RPM measured on each pair.
Did you check the system voltage before you started taking things apart? It should be about 14.5 volts at 3000 RPM. The fact that you saw issues at high speeds leads me to believe it could be over charging.
Oh, the AC output spec is 16-23 volts per 1000 RPM measured on each pair.
i did check the voltage before, the battery was reading 12.35 with bike off. At idle it read 12.02 and bringing the rpms up it did make much difference either way for the short time I had it running.
Stellar HDF Member
Joined: Mar 2006
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From: From Long Island, now in So. Cal
Last edited by WS6 Formula; Oct 27, 2020 at 03:08 PM.
Stellar HDF Member
Joined: Mar 2006
Posts: 3,124
Likes: 255
From: From Long Island, now in So. Cal
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Seasoned HDF Member
Joined: Mar 2010
Posts: 21,006
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From: Poolville
You can take an AC voltage reading at any of the two wires and at 2000 RPM you should be getting 36 to 43 volts AC.. But make sure you check between all three phases because I've seen one phase go and still have two phasess so make sure you get good voltage between each but it sounds like you have a bad stator, definitely.
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HDF Community Team
Joined: Aug 2018
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From: New Hampsha