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[familymad666]

Hi everyone,
my eml light keeps comming on  >:(and fault codes keep pointing to bank 2 sensor 1 even thou i have changed one sensor and changed the others around 2 days later and light is on again. When the car has sat for a while and i start it up a cloud of gray smoke comes out the back end can this set off the eml light it only smokes on start up. If so is it the valve stem oil seals.Thank you for help in advance.  

[Ralph]

I've got the same Valve stem seal problem on my 2.6,
but it hasn't put the EML light on.
I think your problem maybe somewhere else.

[Elite Pete]

It sounds like it. Mostly happens on 2001 2.6 cars

[Elite Pete]

Sorry, should have said the smoke on start up if its a bluey colour is more than likely to be valve stem oil seals

[familymad666]

Thanks for that i do not know what else it could be as all sensors have been tested with no faults , so valve stems it is.

[familymad666]

Would this smoke be the cause of the eml comming on.

[familymad666]

Does anyone know how long and what tools i need to change the valve stem oil seals as i will have to do to fix the problem of the eml light comming on.Thank you

[TheBoy]

I think the stem seals and the lamda fault are unrelated. Worth checking the wiring to the lamdas.

[familymad666]

I have checked the wires on the black connector under the car and are o.k all 4 sensors tested the same when it was at the garage i am a bit stumped with electrical as i am more machanical, where would i start looking code faults are 0150,0155 bank 2 sensor 1 even when i have changed the sensor Thank you,

[tidla]

anyone mentioned live data?

[alank46]

This is a very common incorrect assumption. 
All that a fault code shows is that the signal received at the input to the ECU is out of the expected range.  It does not necessarily mean that the sensor providing the signal is at fault.  The sensor may well be working correctly and correctly indicating that there is a fault with the fuelling (or some other mechanical aspect of the engine) causing the lambda to be out of range.  It could also be faulty wiring or connections.
Somebody mentioned live data, seems like a good way to go.

Having said that, hasn't this age of car got 4 lambdas, and there is a known problem with the pre cat lambdas and a "how to" to fix it?  Something to do with moving them.  Don't know the details, my car only has 2 lambdas.

I have checked the wires on the black connector under the car and are o.k all 4 sensors tested the same when it was at the garage i am a bit stumped with electrical as i am more machanical, where would i start looking code faults are 0150,0155 bank 2 sensor 1 even when i have changed the sensor Thank you,

[Martin_1962]

Could it be sooty lambdas?

I had to replace my front ones

I replaced my valve seals with the green ones

[feeutfo]

Hi everyone,
my eml light keeps comming on  >:(and fault codes keep pointing to bank 2 sensor 1 even thou i have changed one sensor and changed the others around 2 days later and light is on again. When the car has sat for a while and i start it up a cloud of gray smoke comes out the back end can this set off the eml light it only smokes on start up. If so is it the valve stem oil seals.Thank you for help in advance.  

What exactly are the codes?

[feeutfo]

Hi everyone,
my eml light keeps comming on  >:(and fault codes keep pointing to bank 2 sensor 1 even thou i have changed one sensor and changed the others around 2 days later and light is on again. When the car has sat for a while and i start it up a cloud of gray smoke comes out the back end can this set off the eml light it only smokes on start up. If so is it the valve stem oil seals.Thank you for help in advance.  

What exactly are the codes?

Try the pedal trick if you don't have access to a reader.