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CrazyMotorcycleGuy
Most users ever online was 4,519, September 2, 2015 at 03:26 AM.
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Some type of electrical issues......need help please
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Some type of electrical issues......need help please - August 7, 2010, 10:27 AM

Ok so i am having problem with my bike and need some suggestions here is whats happening:

Bike rides fine then out of nowhere bike cuts out (no matter what gear or speed could be cruising to work at 80mph), but does not loose power its as if i hit the kill switch. since bike is moving it push starts itself i grab the clutch and rev the motor and it revs up soon as i let go of throttle it cuts out.

At this time no FI codes are blinking. Here is what happens on the gauges:

Riding then FI light comes on, then red light turns on completely solid with no blinks, then bike cuts out and oil light comes on. I hold in the clutch let the bike cost FI light turns off i start it up while still moving then let go of clutch and ride normally then about 1 min or less later does it again and does this continuously. If i come to a complete stop it will not stay running.

The ride does not start off like this the bike will run fine for about 20min before doing this. Then when the bike sits for a bit (say while i am at work) it will run fine for the first 20min and do it again.

i checked the code book and nothing is coming up with this sequence. I checked my battery and it was not holding power when it had a load against it so i thought it was robing power from the stator (stator is putting out proper volts) so i put a brand new one in ,but no luck. So then i thought it was the bank angle sensor (tip sensor) so i bypassed that, and now it runs fine for the first 40min, but still doing the same thing. I have also noticed that the bike temp fluctuates between 170 and 180 (even while i am cruising) more often then it use to usually staying at 180 (usually it runs around 178 continuously when i am just cruising to work).

any suggestions i am stumped, oh and i ride a 929.


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Last edited by short_mike; August 7, 2010 at 10:30 AM..
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August 7, 2010, 10:36 AM

This may sounds totally juvenile and obvious..but are your battery leads tight and clean?


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August 7, 2010, 10:37 AM

Ride around with a voltmeter connected to the battery and keep track of how the voltage varies at different RPM and as the bike gets hotter. Then report back.


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August 7, 2010, 10:59 AM

Quote:
Originally Posted by Scot View Post
This may sounds totally juvenile and obvious..but are your battery leads tight and clean?
yes, but thanks for the input anything will help at this time


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August 7, 2010, 10:59 AM

Quote:
Originally Posted by CrazyMotorcycleGuy View Post
Ride around with a voltmeter connected to the battery and keep track of how the voltage varies at different RPM and as the bike gets hotter. Then report back.
i will try what feed back could that lead too?


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August 7, 2010, 11:03 AM

Quote:
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i will try what feed back could that lead too?
If the electrical system is working properly.


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August 7, 2010, 11:04 AM

check your kickstand switch .... might be jiggling while you ride


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August 7, 2010, 11:06 AM

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yes, but thanks for the input anything will help at this time

I suggested this due to my own misdiagnosis about 10 years ago. Same symptoms. I slapped myself after figuring out what it was.


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August 7, 2010, 12:18 PM

Quote:
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check your kickstand switch .... might be jiggling while you ride
this is true but it wont stay running at a stand still when it starts acting up and if the kickstand sensor was going off it wouldn't allow the starter to fire.


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August 7, 2010, 12:28 PM

My guess is the ignition module is going bad and gets flaky when it gets hot.

When you have some time with a cold bike, start it up and take a hair dryer to the ignition module while it's idling and see if you can get it to cut out earlier than usual.


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August 7, 2010, 01:02 PM

I, myself, have a ton of street and track miles on 929's. My 929 started having electrical issues and I chased each one diligently. Something didn't add up, it kept happening. I kept looking for the cause and finally found it at 2am one night, a common grounding block in the wiring harness. Down the right side of the frame the main harness has a grounding block and mine was corroded. I tried to clean it and such but to no avail. I finally put a main harness on it and ALL of my "Ghosts in the Machine" disappeared. I've seen it no less than a dozen times and installed 5 harnesses myself, including mine.

Go look, you'll find it. It's about the size of a small box of matches wrapped in electrical tape in a lump on the harness on the right/throttle side below the throttle bodies...


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August 7, 2010, 01:25 PM

if you have a bypass on your kickstand its your relay


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August 8, 2010, 11:32 AM

Quote:
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if you have a bypass on your kickstand its your relay
?


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August 8, 2010, 11:33 AM

Quote:
Originally Posted by Seijirou View Post
My guess is the ignition module is going bad and gets flaky when it gets hot.

When you have some time with a cold bike, start it up and take a hair dryer to the ignition module while it's idling and see if you can get it to cut out earlier than usual.
thanks will definitely check that out


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August 8, 2010, 11:34 AM

Quote:
Originally Posted by boomboom929 View Post
I, myself, have a ton of street and track miles on 929's. My 929 started having electrical issues and I chased each one diligently. Something didn't add up, it kept happening. I kept looking for the cause and finally found it at 2am one night, a common grounding block in the wiring harness. Down the right side of the frame the main harness has a grounding block and mine was corroded. I tried to clean it and such but to no avail. I finally put a main harness on it and ALL of my "Ghosts in the Machine" disappeared. I've seen it no less than a dozen times and installed 5 harnesses myself, including mine.

Go look, you'll find it. It's about the size of a small box of matches wrapped in electrical tape in a lump on the harness on the right/throttle side below the throttle bodies...
is it attached to anything? where would the corrosion be if there is any? and i like your wording "ghosts in the machine"


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