General Category > Engine related issues
Camshaft sensor readings on F800GS & WTF
effisland:
OK so what's with this product - no manual to explain what all the codes mean? I don't mind a message board but it feels like us users are blinding testing this product with no sensor code "bible" that explains what these codes mean. Maybe I am missing some crucial download??
My bike is running poorly, like it is missing. I've already changed the plugs and checked the injectors. I have already rewired the camshaft movement sensor, the wire had been cut and I thought that was the problem. I don't see a fault reading, but I also don't see any engine report showing the current status of this sensor. Is there any GS911 readings of this sensor?
I read the explanation of the two Lambda sensors - however there is nothing that will tell me where the problem is on my bike - is it a coil i.e. electrical problem, or is it a plugged injector? Since I have installed this GS911 I am not any more knowledgeable about the condition of my bike. If you are telling me I still have to change out the coils and the injectors (without even knowing if there is anything wrong with them) then this product is useless.
All I'm asking is for a user manual or spreadsheet that explains what the codes mean....I assumed this would have been provided with the product...did I just buy an expensive paperweight? :-[
WayneC:
The GS911 can only provide information and fault codes within the capabilities of the design of the ECU's. If BMW did not build reporting into the hardware design and then monitoring of the hardware within the ECU firmware then there is little any diagnostic tool can do
Fault codes are built from a series of fields such as location, component and fault, these numbers can vary from model to model as to how BMW derives them so there is no single large list of codes for all models, the earlier the model the simpler the way the codes are derived.
If there are no fault codes on the machine then look at the real time data recording and do a run to confirm the sensors are operational
effisland:
So I can appreciate getting this kind of information, and see some wide fluctuations over the course of about a minute of rough running. So, what does the high readings for Llambda voltage indicate?
Basically, is a lack of fuel in one cylinder causing the misfire or is it the lack of fire in the coil or spark plug?
WayneC:
Ah, interpreting real time values is the art and I wont claim any great ability in it, particularly on a model I dont know well
Lamba though is only telling you the result and lambda is only relevant up to an RPM set in the ECU which is model dependent and mainly used on constant throttle, there is another field which tells you if it is active
In real time values is there a field for cam shaft sensor on your model ?
Personally I would look at adaptions and see what adaptions can be reset as a starting point where there are no fault codes showing and rest adaptions, re run the procedure to create a new adaptions table then work from there
effisland:
Here is another interesting table.
No one has yet answered the question the existence of a manual with the GS911... information about what this data means...
For example, ignition angle - what does that mean? It goes from -30 when there is 0 load to +41
There are two 'knock sensors'. Is one of them the camshaft movement sensor? What are the range of values and does a high value mean knocking? Is knocking the same as misfiring?
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