General Category > Engine related issues

RPM unstable

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StephanT:

--- Quote from: kamen rider on September 18, 2013, 11:39:51 AM ---Thanks bikecrazy5. I can share with my friends. Btw what you are riding? Ya great with the knowledge of the bike.

--- End quote ---
I have a different view.. hitting the kill switch on a K024 chassis motorcycle (such as a F800), does nothing but stop the motor from running... The kill switch on this generation of motorcycles is just an input to the ECU..., just like the side stand switch etc.

When you hit the Kill switch nothing goes OFF, except that the engine stops running... you can still talk to the ECU and all other functions are active and communicating...

On the older bikes, like the 1150's and 650 singles, that's a completely different story... there the sidestand switch and the kill switch are hard wired into the energising circuit of the main power relay... Hit either of them and power is cut to the ECU - completely...

best,
Stephan

edmund goh:
I see thanks for replying also stephan. This topic in my riding group kept going and going and ........

Btw im open for opinions, wanting to know more actually of how the bike electronics work.

And the 2013 bmw controls sucks!(sorry for the vulgar), the plastics feels cheap (my 15years old lego plastics feels better)  and lots of the switches got stuck. I have got the light switch which is trigger type stuck in the high beam postition, info switch depress and stuck. My riding group one of the fella got mulitple failure at the left hand instrument switched, signal switch unable to cancel, high beam stuck, horn depress and the honking kept going. The right worst.... switch stuck at engine cut off, some feels the engine start detent but nothing happens and one of the guy cannot kill off engine with the switch.

But i like the way they organise the components to behave, example light switch tigger type (high/low/passing) beam all integrated. Signal switch left and right integrated together apart from previous f800gs from other years. Engine kill switch and starter integrated to  the simple rocker operation.

Although the switches this year kinda cool for its operation, but i think its a safety harzard especially the engine kill switch.

Rgds,
Ed....   

edmund goh:
Hi everyone,

Its me again with the rpm unstable, well it happened again to my f800gs. so i dont think its the kill switch now.

This time it got worst the bike will stall at idle and some gears that i kick doesnt engauge.

I plug in with the gs 911, under the engine wording theres  the idle actuator calibration. i tried it but running the bike a while doesnt seems to

solve the problem. This is when i saw the adaptations reset wording, i tried clicking on it which say its for compensating components tolerance.

While doing the resetting the gs911 prompt the user to placed it on main stand and engauge the every gear for 5 to 10 secs.

Upon completing the 6 gear on my bike, the other instruction were to turn the power off for the ecu to capture the new values.

The gs911 also shows the value for each gear in volts, the instructions states that every gear the value were different, eg. gear 1 0v, neutral

0v, gear 2 1.2v, gear 3 2.1v..... and till gear 6. so this leads me to think the gear were link to the TPS(throttle valve potensiometer)?


After the adapatations resetted and idle actuator resetted, the bike seems to run fine.

 

edmund goh:
The adaptations consist of the following:

Engine or gearbox

Throttle body

gear sensor

TPS( Throttle-valve potentiometer

Lamda sensor

Fuel injectors

Other changes in and around the fueling system

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