HELP ADVICE REQ :Lambda Sensor 1150 SE

[Mr Twisty]

Morning All,

Just a quick question regarding the Lambda sensor on my bike it is a 1150 SE 55 reg so one of the last ones made, checking my exhaust last night the lambda sensor is screwed into the Y piece but the cable end is just tye wrapped behind the lower side panel ??

Cant immediatley see were this plugs in ?? or should it be ??

Bike has a remus exhaust and Y piece and it was also previously fitted with a power commander that has been removed ??

Any advice appreciated

Cheers

Phil

 

[D6]

dunno bout the commander but with certain dobeck units you remove the lambda, its connected right hand side, halfway to the front of the tank , i think the tank will av to come off,
itl run fine without it but better to have it on if its working

 

[pomm001]

dunno bout the commander but with certain dobeck units you remove the lambda, its connected right hand side, halfway to the front of the tank , i think the tank will av to come off,
itl run fine without it but better to have it on if its working

I would have thought if you leave out the Lambda the the ECU will go into 'limp' mode for fueling which would make it run very rough.
Steptoe would be the best to clarify

 

[D6]

nope, it runs fine,, why would any limp mode be rough?just switches to a determined map,after all,, bikes run fine without lambdas for years before,
if theres a fault on the lambda, then yes, as its giving a false message,

 

[Mr Twisty]

Gents,

Thanks for the info however my problem is not quite straight forward, I have read numerous threads and searched high on low on this site and still cannot find the answer I am looking for which to someone in the know must be quite simple.

I have a cable coming away from the lambda sensor with about 30 cm of cable and a 6 prong fitting on the end but cannot for the life of me see were this plugs into ???

I have seen posts referrring to under the tank but this cable would not reach that far or am I missing something ????

Is there supposed to be another cable from under the tank down to the sensor ?? any help pointers as to were the lambda sensors cable ends up ( I know the Y piece end ) but the other end??

Cheers

Phil

 

[Steptoe]

lambda cable runs from the lambda and plugs in on the right hand side of the bike under the tank almost alongside the motronic unit tucked in by the rear of the alternator. It's a big plug easy to find

 

[D6]

there you are

 

[pomm001]

nope, it runs fine,, why would any limp mode be rough?just switches to a determined map,after all,, bikes run fine without lambdas for years before,
if theres a fault on the lambda, then yes, as its giving a false message,

On most sytems controlled by an ECU if one of the sensors goes down then, as you say reverts to a 'limp' mode or different map which is safe for the engine, power and revs are generally reduced.
Bikes without cats dont need a Lambda

 

[D6]

On most sytems controlled by an ECU if one of the sensors goes down then, as you say reverts to a 'limp' mode or different map which is safe for the engine, power and revs are generally reduced.
Bikes without cats dont need a Lambda

.
most systems,
but we are not talking about a lambda being faulty, we are on about one missing,and why should it run rough?? a 1150 will run ok without one, if everything else is working correctly,
go on, try it,
(or ask steptoe, he has seen em without, i bet)

 

[Rob Farmer]

I'd have thought an open circuit Lamba sensor would have flagged up a fault to the ECU. Has it got one of those go faster resistors fitted in it's place?

 

[beermonster]

My Sensor went west last year, bike runs fine without it

 

[TangibleSolid]

re lamda sensor

Mr Twisty,
I fitted a power commander to a previous 1150GS and if its the same as the one you had fitted, the commander comes with it's own, specific 'wide band' lambda sensor.
If your commander was removed by someone who didn't know this, it could be the problem as it sounds to me that you still have the commander sensor fitted, as it has a shorter lead than standard. (Standard lambda sensor has about 50 cm of lead, from memory)
The original sensor connects on the right hand side under the tank, the femail part is tie-wraped to the down tube of the frame about 20cm down from the headstock

Hope this helps
Cheers

 

[D6]

My Sensor went west last year, bike runs fine without it

they wont believe you,,
sounds like tangible solid has the answer to the cable prob though,

now, im not sure and somebody else may have to help on this but i think this lambda will do the trick ??? http://www.beal.org.uk/automotive/lambda-sensors/lambda-sensor-4-wire-4-connector-/prod_1847.html
if not, motorworks etc?

edited,
prob wont be any good as you dont have the correct plug on your old un?

 

[uncle dick]

As someone who deals with engine management faults on a daily basis, DON'T bother with the 'universal' sensors described above and, indeed, available from just about anywhere.

Most of the major manufacturers do oe spec sensors with the right connectors so check out Bosch, NGK/NTK, Denso etc.

HTH
Dick

 

[D6]

As someone who deals with engine management faults on a daily basis, DON'T bother with the 'universal' sensors described above and, indeed, available from just about anywhere.

Most of the major manufacturers do oe spec sensors with the right connectors so check out Bosch, NGK/NTK, Denso etc.

HTH
Dick

any idea where from /which one is best then?

 

[uncle dick]

For automotive stuff I'd get the oe number (off the part or from Realoem) and call Euro Car Parts. Tell them you need an oe spec sensor and see what they come up with. A lot of GS / Motronic stuff is very close to automotive so I'd be surprised if they couldn't do anything.

Any of the names I've mentioned would be fine but I'm guessing that either Bosch or Beru would be oe.

Dick

 

[Mr Twisty]

Mr Twisty,
I fitted a power commander to a previous 1150GS and if its the same as the one you had fitted, the commander comes with it's own, specific 'wide band' lambda sensor.
If your commander was removed by someone who didn't know this, it could be the problem as it sounds to me that you still have the commander sensor fitted, as it has a shorter lead than standard. (Standard lambda sensor has about 50 cm of lead, from memory)
The original sensor connects on the right hand side under the tank, the femail part is tie-wraped to the down tube of the frame about 20cm down from the headstock

Hope this helps
Cheers

Looks like the penny has dropped THANKS

This sounds like the problem, now need to try and find an original OEM style lambda sensor any ideas / prices ??

Cheers

Phil