2012 gsa cutting out

[cocker]

2012 gsa 6000 miles on clock and only recently serviced by the dealer, however a couple of times i have been riding along and noticed if i pull the clutch in then roll off the throttle, and then blip the throttle the bike will cut out or if not cut out, it will not rev nice and crisp like it should, it will sound a bit crap,if try it again and it will probably cut out, its only done it since it was serviced, it doesnt do it all of the time.

its all under warranty and ive only got to make a phone call to the dealer to get it looked at, but if anyone can give me any indication of whats wrong i would appreciate it

 

[Pukmeister]

Probably related to throttle position sensor. Try a TPS reset.

 

[Victor c]

Probably related to throttle position sensor. Try a TPS reset.

Can this be done without the use of BMW service tool?

 

[Pukmeister]

Yes.

Disconnect the battery under the seat for about a minute then reconnect it.

Turn on ignition but do not start the engine.

Roll the throttle fully open to fully closed three times, do it steadily and slowly.

Turn off ignition. Wait about a minute.

Turn on ignition, after self-test start the engine and go for a ride.

 

[cocker]

cheers pukmeister i will go and do it now, and let you know after i go for a good ride out tomorrow






ive been and done that now, thanks, could i ask what does that procedure do, thanks will give bike a good ride out tomorrow

 

[Pukmeister]

All it does it clear the ecu of its stored data regarding how far open the throttle is, then the reset procedure 'relearns' it.

The engine management then gives the correct pulse to the fuel injectors and spark plugs based upon how far open the throttle is, along with crank and cam angle, barometric pressure and oil and air intake temperature. Ergo smooth running again and not stalling on part-throttle.

I suspect that with all the vibes on the boxer twin plus a bit of wear on the TPS wiper arm inside the sensor, it can sometimes go a bit out of kilter and a TPS reset usually sorts it. Just a theory of mine and not based on any hard evidence, but a TPS reset only takes a few minutes and costs nothing so if it sorts it, happy days.

 

[Victor c]

Yes.

Disconnect the battery under the seat for about a minute then reconnect it.

Turn on ignition but do not start the engine.

Roll the throttle fully open to fully closed three times, do it steadily and slowly.

Turn off ignition. Wait about a minute.

Turn on ignition, after self-test start the engine and go for a ride.

Do you need to wait for the self test to complete before opening and closing the throttle 3 times?

 

[Pukmeister]

Ideally yes, but I couldn't say if its essential.

 

[Roymondo]

TTBOMK you don't need to disconnect the battery. Just switch on, roll throttle fully open, closed, open, closed, open, closed. Then switch off.

 

[cocker]

had bike out on every type of road, and gave it every thing i could for 8 hours bike is back to what it was, cheers pukmeister

 

[Pukmeister]

Disconnecting the battery makes all the difference in my experience. I think it somehow manages to wipe the slate clean with the fuelling/ignition maps making the bike run better.