Findig engine stall causes
Vic
Since I am here, I own both a BMW 1200GS made in March 2007 and a
GS911 tool and love them both :-)
I have now had my second engine stall occurrence in 25,00 miles.
Last one happened on a down shift from 3 to 2 while throttle bleeping
and clutch was pulled, perhaps brake was applied, coming to a stop.
The GS911 shows no error codes stored.
Engine started immediately afterwards and whatever I tried could not
reproduce the failure subsequently but I am getting concerned and
would like to understand what could have caused this stall and if I
can do something to understand and prevent it using the GS911.
The bike has had all the recalls done, last one was the fuel pump
controller.
Any thoughts really appreciated.
Vic
Eric Ducdude
Vic,
In an effort to keep this GS-911 focosed have you used the GS-911 to sync
the throttle bodies??
Barring TB sync I suggest goining the BMW tech list at
http://www.lists.ibmwr.org/mailman/listinfo/bmw-tech
There is a HOST of data on line and an active list..
If that does not work...
There is the R1200GS forum @ http://www.r1200gs.info/
Fourm @
http://www.r1200gs.info/forum/
Cheers,
Eric
Wagner Bugno
I had a similar problem with my 1200RT, try to check the battery what
was my problem. The symptoms was :
1 - the engine start and stall imediately after;
2 - if you turn on the radio and lights at the same time, the idle
fluctuates until the engine stalls ;
3 - when apply freight on the brake and press the clutch the engine
stops work.
Stephan Thiel
However, that said, you should know that the GS-911 only relays what is
in the ECU... (in terms of fault codes...). The ECUs continuously run
diagnostic tests on themselves... and when something is out of the
ordinary, then it tries to isolate the problem and log a fault code
accordingly... however, this is just as good and thorough as the ECU
design team's plan... if they did not think of a certain scenario then
your ECU most likely won't pic it up and can't log a Fault code
accordingly... I had a friend who's bike cut out occasionally and it
turned out to be a completely severed ignition wire... the wire touched
(within the wiring sleeve) most of the time... and whenever it did not,
the ECU just interpreted it as the ignition was off for a while... and
of course as you can imagine... no fault codes for this scenario...
best,
Stephan
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+27 21 880 1433 (tel)
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JR
I have a 2006 GS1200 ADV, the firs year after the purchase I had two or
three Stall identical yours, down shift from 4,3 to 2 while throttle
bleeping, clutch was pulled, brake and the bike coming to a stop. Engine
started immediately not start problems. The local BMW dealer put a new
clutch switch (left hand handlebars placed). The problem gone for a time.
Now, after 3 years, the bike have 50.000 KM and I remember have had only one
similar engine Stall en the last three years. Try to change the clutch
switch. Hope this helps you.
Regars
JR
-----Mensaje original-----
De: gs-...@googlegroups.com [mailto:gs-...@googlegroups.com] En nombre de
Stephan Thiel
Enviado el: Tuesday, February 02, 2010 10:55 PM
Para: gs-...@googlegroups.com
Asunto: Re: [GS-911] Findig engine stall causes
best,
Stephan
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JR
think in some speed reduction scenaries the Ecu could cut the inyection
completely or low it below Idle params in order to save fuel (not sure)
except if you are pulling the clutch, in this case is mandatory to maintain
the Idle inyection level. In this case if the ecu is not informed for the
clutch switch, an Stall will occur in some speed reduction scenaries.
JR
-----Mensaje original-----
De: gs-...@googlegroups.com [mailto:gs-...@googlegroups.com] En nombre de JR
Enviado el: Wednesday, February 03, 2010 9:38 AM
Para: gs-...@googlegroups.com
Asunto: RE: [GS-911] Findig engine stall causes
Stephan Thiel
the realtime values.... put them through there paces and see whether you
find something...
best,
Stephan
haakon
I KNOW the REAL BMW`s and the ..."smaller" ones are not at all the same-
re: ECU- but both was probably programmed by BMW technicians.
--------------
The early 650 GS models had LOTS of hesitation, surging and stalling
problems.
After several new ECU modifications they got it sorted.
In short- it works like this, more or less:
There are 2 "levels" of iddle- if you just pull the clutch
OR select neutral it will be in the high iddle for a few seconds- then go to
"low" iddle.
If you do the same and also use the brakes (or the speedo show you are close
to stopping) it will go to low iddle faster.
There are 4 or 5 different maps- as regard to engine iddle speed.
A faulty clutch switch (or gearbox neutral switch) might easily make the
engine stall.
By letting the iddle go down to "low" too fast.
MY 650 GS did just that.
Keith Higgins
I have a 2007 GS1200 with 51K, mine kept cutting out (would restart be stop after 100m) with the signs of no fuel or blocked fuel line type symptoms. Roadside assist to get it back to BMW and was informed that there was a recall for the fuel pump electronic package. Seems it fails so just a thought. Do not know if relevant your bike VIN #.
Regards
Keith
Vic
The clutch switch is an interesting theory to the stalling problem.
I would like to add though that am only using two fingers and have the
clutch adjusted that it doesn't need full lever travel to disengage,
rather 1/3 at most.
I found this out when my engine did not start when clutch was held
pulled in with two fingers, as I normally do, while in gear, due to
switch not engaging.
If I use all fingers to pull the lever all the way, then it would
start, but that's not how I usually shift gears.
So at least for me, this switch rarely sees on/off action as it seems
only changes state at the very end of the lever's travel.
I wonder what kind of software they use to monitor a plane's engine
for similar purposes, guess it is just a matter of throwing more $$ at
the project to find the right programmers :-)
Best,
Vic
> > which can be viewed athttp://www.hex.co.za/email_legalnotice
Stephan Thiel
can see something useful when it stalls?
best,
Stephan
Vic
I had the stalling only happen twice since I own this bike (October
2007) and it now has approx 25,000 miles.
So it would probably be hard to catch (and am secretly hoping it will
not happen again :)
But each time I clearly remember the scenario was the same, i.e.
slowing down, at a speeds of maybe 5 mph - coming to a stop, down
shifting from 2 to neutral.
I will hook up the GS-911 and go for a ride at next opportunity,
though it might take at least another month before weather becomes
favorable for riding here North Eastern US..
And to entertain the thread, a rhetorical question; Does the ECU
software care about reading the clutch switch when bike is in motion?
I could be wrong, but as far I understand the only intended purpose of
the clutch switch is to protect us from ourselves (and the bike from
damage) while starting the engine in case bike is accidentally in
gear.
Best Regards,
Vic