Is there a way of looping out the Lambda probe? I'm in Finland and the fault has arisen... apparently rally cars bypass their sensors - can it be done on the 2002 1105GS?
If so, how?
Cheers!
If so, how?
Cheers!
Bypass the lambda sensor?
- Thread starter scud
- Start date
If the sensor is totally kaput, any motor accessory shop should be able to sell you a universal one, you'll just need to know how many wires there are. Prices over here are around 30 quid. That should get you to the end of your trip when you can get some proper diagnosis done and the correct sensor fitted.
Cheers!
We swapped out the exhaust and sensor with another GS and the fault remained; so much for the fault codes and the £80 charged for reading it!
We'll continue to swap out other bits, until we identify the problem....
We swapped out the exhaust and sensor with another GS and the fault remained; so much for the fault codes and the £80 charged for reading it!
We'll continue to swap out other bits, until we identify the problem....
Tell us what the symptoms are and we can make lots of stupid suggestions. Maybe even a correct one as well
Tell us what the symptoms are and we can make lots of stupid suggestions. Maybe even a correct one as well
Ok.. problem solved as well now!
Symptoms:
Lack of power under load
Max 5000 revs
Catalytic convertor glowed cherry red
Coughing and spluttering, although only a bit at idle.
Small amount of irregular interval backfire
Max speed 50mph
BMW Finland diagnostic machine said:
Oxygen sensor failed
Cause discovered by process of elimantion using swapped out parts:
Fuel Injector
Temp fix:
Cleaned as best possible with WD40 and blown out by mouth.
Parts ordered from James Sherlock in the UK - now in transit.
happy fella!Uncle Crumpet
Registered user
sounds like you would have found the problem sooner by looking at the symptoms rather than reading the diagnostic!
sounds like you would have found the problem sooner by looking at the symptoms rather than reading the diagnostic!
We'd swapped coils, plugs and cleaned a few other bits etc. As we are currently touring, we naively thought it would be quicker and easier for the bike to be plugged into a diagnostic machine and speak to someone who knew what they were properly doing - so we took it to a main dealer in Oulu, Finland. That turned into an expensive mistake...
They charged £80 for reading the fault codes and the diagnostic was a failed oxygen sensor -they wanted to fit a new one for £450, but had to order the part from Sweden.
We were then going to buy the part from the UK as it's easier and far cheaper (£78 from lambdapower) - a chat with North Oxford BMW in the mean time led us to realise that the diagnosis may be wrong, so we continued to change parts over. All good after the injectors were swapped.
The resistances were 15.8 & 16.2 on them when they were checked - If you can tell one is knackered from those numbers, why didn't the dealer notice?
If this helps someone else - all good. I trawled the forum looking for suggestions myself all evening - most of the results were pointing to "Halls sensor" - and that's a bit harder to change out here...
I'm not convinced of the injector fault. The resistances look about right and it's practically unheard of for the Bosch Motronic ones to pack up. When they do go, the resistance changes significantly and you lose one cylinder. I'd be looking at a timing issue - including hall sensor failure.
Btw, if the lamda sensor dies you would probably get home ok as the Motronic will substitute a value based on throttle / temp / rpm readings.
Dick
Btw, if the lamda sensor dies you would probably get home ok as the Motronic will substitute a value based on throttle / temp / rpm readings.
Dick
Those resistances are about right, as said above, and I have noted one pair of mine as being 17.2 & 16.9 ohms. I'll check my spare pair if you would like more information.
Anyway, the coils within the injectors may be good but its plunger valve may be sticking so, do not discard your old parts because they may be recoverable by cleaning their internal parts. They can be serviced for the price of a decent takeaway curry dinner; apparently.
BTW, I use fuel injection system cleaner frequently.
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