I have a 2008 R1200GS, that has done 60k+ Miles, and has been trouble free. Has just been serviced, and since then every now and then ie 200 miles approx, the engine cuts out as I am coming to a halt. I gun the starter and away I go, untill the next time. And before anyone asks, yes, I am remebering to depress the clutch!! The battery was new at 4k so has done 56,000 miles. There are no other untoward symptoms. Has anyone got any thoughts on what it might be?? Thanks JJ
Engine cuts out
- Thread starter JJ Jeremy
- Start date
I had this issue on my '09 bike. That was down to a failing lambda sensor I'd suggest a trip to your nearest, friendly, BMW Motorrad dealership or find someone local with a GS-911.
You may want to read this thread:
http://www.ukgser.com/forums/showthread.php?298551-R1200GS-Adv-motor-cutting-out-(2008-MK-II)
http://www.ukgser.com/forums/showthread.php?298551-R1200GS-Adv-motor-cutting-out-(2008-MK-II)
I am no technical whizz but i think it will be to do with the fueling in some way !
My 2012 GS did something simmilar a couple of times both occurences were when it was hot in hot weather i asked the dealer to look at this at a service (when i used BMW for this) and they found nothing wrong
I had the bike re mapped at hill top and it has not done anything like it again which could be coincidence but as i say more likely the ultra lean fueling on the original map
My 2012 GS did something simmilar a couple of times both occurences were when it was hot in hot weather i asked the dealer to look at this at a service (when i used BMW for this) and they found nothing wrong
I had the bike re mapped at hill top and it has not done anything like it again which could be coincidence but as i say more likely the ultra lean fueling on the original map
trainman
Registered user
what was done on the service? plugs? software update? throttle balance? TPS reset reqd and if so done? go for the basics first, anything touched at service is a good start
Bendy toy
Registered user
Mine did this when a coil was failing. I replaced one sooted up lambda sensor at huge cost but real reason was unburnt fuel caused by that coil misfiring. The coil smelled burnt.
It could be the battery has lost a cell so volts drop at low engine revs causing injectors to stall. Easy to check with a voltmeter while battery is under load. However low system volts usually generate strange errors that cause the warming triangle to light up.
Sent from my phone with mangled spelling
It could be the battery has lost a cell so volts drop at low engine revs causing injectors to stall. Easy to check with a voltmeter while battery is under load. However low system volts usually generate strange errors that cause the warming triangle to light up.
Sent from my phone with mangled spelling
Thanks for your replies eveyone. I have spoken to a well known BMW GS specialist who has been servicing GS's for over 25 years and he says, he is aware of the problem, and has encountered it many times. He says its a fuelling issue, but other than that no one really knows of an in depth diagnosis, and there is not a simple quick fix. Changing the ECU may well fix it, but thats hugely expensive.
I will leave it there for now, and just remain aware of it and hope it doesnt get worse.
I will leave it there for now, and just remain aware of it and hope it doesnt get worse.
I also had this on the first GS Adventure I owned (an '09), but have never encountered it on my two newer bikes ('09 and '10).
If it's an issue caused by over-lean fuelling, a good ahort-term solution might be to plug in an Accelerator Module or similar device between the IAT sensor connections and run it for a couple of weeks to see if a small degree of enrichment helps the situation.
If you have a friend who has one, you may want to borrow it for a few days - this would save the cost of a solution that may not work.
As has already been said in this thread, I would start with checking the basics first. My first bike would stall without warning on a trailing throttle with the clutch in about once or twice a week. Idle speed was also lower than normal.
It did not change it's behaviour when:
If it's an issue caused by over-lean fuelling, a good ahort-term solution might be to plug in an Accelerator Module or similar device between the IAT sensor connections and run it for a couple of weeks to see if a small degree of enrichment helps the situation.
If you have a friend who has one, you may want to borrow it for a few days - this would save the cost of a solution that may not work.
As has already been said in this thread, I would start with checking the basics first. My first bike would stall without warning on a trailing throttle with the clutch in about once or twice a week. Idle speed was also lower than normal.
It did not change it's behaviour when:
- Going from a standard paper air filter to a UNI foam filter.
- Exchanging the Cytech exhaust can for a Tornado Developments can.
- Exchanging the spark plugs I got with the bike (Champion W7DC+) for NGK DCPR9EIX.
buncobooth
Registered user
I had this problem and engine remapping by the dealer seems to help and make the engine run a lot nicer !
Sot1200
Registered user
What I would try is unplug the connections to the stepper motors of the throttle bodies. Your engine should still tick over at the the same rpm as with them connected. My guess is that at that millisecond of time that the idlers should kick in they are a bit late. Then again I may be wrong.
trainman
Registered user
unless your ecu was flashed at service I doubt you suddenly have an ecu fault, something has been changed that has changed the fuelling slightly, so now you have done a few miles re check throttle balance, do a TPS reset and re check tick over once engine is good and hot, a nadgers tweak on one of these may well sort you out, after that what else was done that might have not been done 'spot on', valves maybe?
+1
I have had the same problem twice! Sooty exhaust smoke when at operating temp, and rough idling/ cutting out a low revs, typically when approaching a stop.
Both times it was a lambda sensor. The dealer could not detect the fault the first time, but eventually changed one of the sensors and all was fine. Second time I recognised the same symptoms, and a GS-911 found the fault codes easily. Easy repair once you know what is wrong...
Tim
Tim
bitwobbly
Registered user
I'm not too far from you in Eastbourne. Have gs911 if I can help.
+2 for the Lambda sensors, my 08 GSA did the same, then the RH lambda died. Replaced it and never had so much as a stutter since.
Bendy toy
Registered user
I replaced the Lambda on mine and got zero benefit from one extortionately costly spare part. A faulty coil will put unburnt fuel down the exhaust so O2 sensor sees excess (actually unused) oxygen and richens the mixture.
Try to borrow some coils before going for Lambda sensors.
Sent from my phone with mangled spelling
Try to borrow some coils before going for Lambda sensors.
Sent from my phone with mangled spelling
I've been chasing down a similar problem, but also had a very lumpy idle when hit in traffic. I cam across a thread on here, I believe, that suggested it could be throttle body related. I had a spare set so swapped them over - troubkes mostly gone. Having acloserlook at the throttles that I removed I noticed that the left hand one had been adjusted, possibly in the recent service. The throttle stop was not even touching the screw, so the flap was completely closed, and sticking in that position. The big clue to look there was the missing cover over the stop screw head. Wonder if therehas been an update to procedures for BMUU technicians when checking throttle synch? I am under the impression that these are set once and should not be fiddled with.
Swapping thebodies is easy enough, 5 minutes per side. Might be worth seeing if you can borrow a pair to try?
Swapping thebodies is easy enough, 5 minutes per side. Might be worth seeing if you can borrow a pair to try?
Had/have same problem onan 05RT. Thought it was me - poor technique and not changing down the box early enough.
Very worrying coming up to junctions roundabouts with it potentially stalling on you. Revs would drop and keep dropping and the engine would stall.
Have had a number of skids too. Engine stalls locks up back wheel. Lots of smoke and light back end.
Takes a 'moment' to realise what's going on and you pull in the clutch. But scary especially if on a bend or turning into a junction!!
Bike serviced by BMW and I got to watch the mechanic do the throttle bodies and I mentioned the stalling problem.
He reset the throttle stops - got the impression he did it from the computer. Would that be correct? Factory settings??
Only been out a couple of times this year and haven't had any stalls.
However, I've adapted my riding style over the years, to cope with the issue, constantly blipping throttle to keep revs up.
Must try NOT to do this and see if there really is a difference.
BTW both coils/sticks have been replaced (under warranty) within the last 4 yrs. Problem was it kept stalling and difficult to start when out and about in the rain. Leakage?
Will see how things are after a few more rides.
Very worrying coming up to junctions roundabouts with it potentially stalling on you. Revs would drop and keep dropping and the engine would stall.
Have had a number of skids too. Engine stalls locks up back wheel. Lots of smoke and light back end.
Takes a 'moment' to realise what's going on and you pull in the clutch. But scary especially if on a bend or turning into a junction!!
Bike serviced by BMW and I got to watch the mechanic do the throttle bodies and I mentioned the stalling problem.
He reset the throttle stops - got the impression he did it from the computer. Would that be correct? Factory settings??
Only been out a couple of times this year and haven't had any stalls.
However, I've adapted my riding style over the years, to cope with the issue, constantly blipping throttle to keep revs up.
Must try NOT to do this and see if there really is a difference.
BTW both coils/sticks have been replaced (under warranty) within the last 4 yrs. Problem was it kept stalling and difficult to start when out and about in the rain. Leakage?
Will see how things are after a few more rides.
Similar threads
