Kiwi66
Registered user
I would be grateful for some advice on the ECU unit in an F800GS (2010).
Recently I have been having the dreaded stalling problem after riding the bike in warm weather. The bike sometimes stalls when after riding for some time you deaccelerate or slow down. I have had the ECU diagnosed but no faults have been detected and all upgrades done. Confused by the intermittent issue I have undertaken some basic research into this matter which has only lead to even more confusion.
Firstly, I am mechanically inept but by rational deductions, including from those on this forum, I set about pulling apart and cleaning all of the obvious, and cheaper, possible causes.
1) Removing each spark plug – looked fairly new and clean to me (only 500km old)
2) Remove the air filter and have a look at it – was replaced at the same time as the plugs
3) Cleaned up the Idle Control Actuator thingie as sometimes it wouldn’t stall but idle very rough (thanks to Mokkybear)
4) Reset the throttle TPS by doing the full off – full on – full off x4
5) Checked the air hoses for any blockages or kinks
Unfortunately my confidence was short lived as 2 hours into the next ride the problem reappeared.
I don’t believe that it is a fuel pump issue as surely this would be most noticeable when ”making progress” of which there is no noticeable issue or lack of performance. So my next focus point which is well beyond my mechanical competency is towards either the ECU or the fuel pump stuff at the other end of the bike. Personally I still believe that the bike isn’t responding correctly to the throttle deceleration with the ECU being giving or issuing misinformation to the fuel pump. (But I am only a google expert). Also to note is that restart must be done via the button, popping the clutch only produces extreme breaking. Again this leads me to an issue with the ECU.
So what next.
a) There is the fuel pressure sensor which can be replaced
b) The fuel pump can be replaced but I believe this is functioning properly
c) The fuel pump relay
d) something called the engine ignition pick-up which I assume must be similar to an EMS
d) firmware update.
So after further reading there is a possible solution where the ECU is cleared and forced (complete update) performed. But the local (only one) shop won’t do this as they say there is a high probability that they won’t be able to reinstall and we’ll have to purchase a completely new ECU at a mega cost !!!!!!!! Is this expert talking bullshit ? The last thing I want is for me to instruct the works only to be told that they were right and I (the google expert) was wrong.
If you have got to the bottom of this posting then I thank you for your time, and hope you appreciate that I have tried to research this problem first rather than just go straight onto the forum.
Your thoughts would be greatly appreciated including whether the “expert” is correct.
Recently I have been having the dreaded stalling problem after riding the bike in warm weather. The bike sometimes stalls when after riding for some time you deaccelerate or slow down. I have had the ECU diagnosed but no faults have been detected and all upgrades done. Confused by the intermittent issue I have undertaken some basic research into this matter which has only lead to even more confusion.
Firstly, I am mechanically inept but by rational deductions, including from those on this forum, I set about pulling apart and cleaning all of the obvious, and cheaper, possible causes.
1) Removing each spark plug – looked fairly new and clean to me (only 500km old)
2) Remove the air filter and have a look at it – was replaced at the same time as the plugs
3) Cleaned up the Idle Control Actuator thingie as sometimes it wouldn’t stall but idle very rough (thanks to Mokkybear)
4) Reset the throttle TPS by doing the full off – full on – full off x4
5) Checked the air hoses for any blockages or kinks
Unfortunately my confidence was short lived as 2 hours into the next ride the problem reappeared.
I don’t believe that it is a fuel pump issue as surely this would be most noticeable when ”making progress” of which there is no noticeable issue or lack of performance. So my next focus point which is well beyond my mechanical competency is towards either the ECU or the fuel pump stuff at the other end of the bike. Personally I still believe that the bike isn’t responding correctly to the throttle deceleration with the ECU being giving or issuing misinformation to the fuel pump. (But I am only a google expert). Also to note is that restart must be done via the button, popping the clutch only produces extreme breaking. Again this leads me to an issue with the ECU.
So what next.
a) There is the fuel pressure sensor which can be replaced
b) The fuel pump can be replaced but I believe this is functioning properly
c) The fuel pump relay
d) something called the engine ignition pick-up which I assume must be similar to an EMS
d) firmware update.
So after further reading there is a possible solution where the ECU is cleared and forced (complete update) performed. But the local (only one) shop won’t do this as they say there is a high probability that they won’t be able to reinstall and we’ll have to purchase a completely new ECU at a mega cost !!!!!!!! Is this expert talking bullshit ? The last thing I want is for me to instruct the works only to be told that they were right and I (the google expert) was wrong.
If you have got to the bottom of this posting then I thank you for your time, and hope you appreciate that I have tried to research this problem first rather than just go straight onto the forum.
Your thoughts would be greatly appreciated including whether the “expert” is correct.
