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  #1  
Old 24 Jun 2007
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95 BMW R1100GS died

I was riding my bike only for about 1/2 a mile when it just died. No symptoms just sputtered for about 5-10 seconds then quit totally. My first steps in diagnosis was to take a plug out. I am getting no spark and no fuel. I can hear the fuel pump start and it turns over good. I think it is an electrical problem but don't really know where to start. I have looked at fuses but that didn't really reveal much.

Thank for any suggestions

Russell
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  #2  
Old 24 Jun 2007
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I drive a 1200GS and its a 04 model so the same things might not be relevant but, my mechanic told me that the following three problems will go

on top of the plugs there are plug on coils, if one went it would feel like the bike had dirty petrol.

Around the ignition is a a ring called EWS , its an anti theft thing, if it goes the bike will stop dead. If that happpens get a new one pull out the lead and plug them into the new one.
Put the key back into the old ignition and hold the new ews close to the key when you start it.

the third thing is a reducer on top of the fuel pump, it is to bring the voltage from 12 v down to 5v, if it goes the bike would die, but you say the fuel pump is running so its not that.

again i know my bike is a different model, but maybe it sheds some light
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  #3  
Old 24 Jun 2007
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Figured it out

It was the hall sensor on the front of the bike. I took off the cover and the blot holding the altenator sensor and and the sensor was almost totally loose. Here is a link in case someone has a similar problem http://advwisdom.hogranch.com/Wisdom/oilhead_hall_sensors.pdf . The sensor is supposed to be a common problem, that or its wiring. And i think it applies to alot of different year models

Thanks for your help

Russell
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  #4  
Old 25 Jun 2007
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no prob glad you got it sorted

gary
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  #5  
Old 26 Jun 2007
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And a note for those who will have a problem with it: usually it's the wiring on the sensor plate, sensor's malfancton is rare. Usually it's the contacts that get "loose" because of engine's regular heating/cooling process per long term usage of the bike (it's in the contact with crank case). Reweld the contacts and in the most cases you're back on the road again.

Always mark its position very precisely before you take it off tho! It's very critical for the ignition timing when puting it back on.

Ride safe!
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  #6  
Old 22 Nov 2007
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Mine just died?

I had to get a tow for the first time since buying my 1100 GS new in 98'. I have 70K miles on it. I have never had an issue with the bike, ever. I had washed the bike the day before. Started and it ran fine for about 10 miles. Sputtered and then a 1/4 mile later, out for good? Charged the battery after the tow, got home that night, still nothing. The next day nothing also. The following day I checked the RID, fuel pump, side stand switch, and the clutch switch. All good. Hit the starter and she fired right up??? What the....??? :confused1: So much for the 9 volt battery/Hall Sensor test? The hall sensor is apparently working now? I have not looked at the wiring at all but I am going to have a peak tomorrow.
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  #7  
Old 21 Dec 2009
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http://www.horizonsunlimited.com/hub...oken-itu-41532

Quote:
Originally Posted by dareon View Post
It was the hall sensor on the front of the bike. I took off the cover and the blot holding the altenator sensor and and the sensor was almost totally loose. Here is a link in case someone has a similar problem http://advwisdom.hogranch.com/Wisdom/oilhead_hall_sensors.pdf . The sensor is supposed to be a common problem, that or its wiring. And i think it applies to alot of different year models

Thanks for your help

Russell
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  #8  
Old 23 Feb 2008
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Hall Sensor Unit or CPU

What was the issue, the HSU or the CPU?
I had a similar issue. I ordered the HSU, but then it turned out the CPU wasn't seated correctly. Maybe oxididation or too many bumps in the dirt made it loose.
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Old 20 Dec 2009
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Sorry I never posted the outcome. I had an upcoming trip planned and was terrified to even drive it to work. Running short on time, I took it to my BMW dealer. I told him that I had washed the bike the night before and that it cut out 10 miles from home the next day during my commute. It restarted a couple of days later. He told me it could be hard to find the problem. He kept the bike for two weeks! He heated it up, sprayed it with water numerous times and checked the wiring. Nothing? He recommended, and I agreed, to replace the Hall Sensor. I have never had the problem reoccur. I did get the old sensor back from him but have never dissected it. I do plan to rebuild it. Thank you all for your help.
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  #10  
Old 20 Dec 2009
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Better late than never, glad to hear that you got it sorted.
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