Lamba Sensor

[JonD]

Was thinking could the lamba sensor be faulty
would this explain failed mot emmisions. ALso getting bad fuel economy also.

How much would a new one cost?

Checked air filter and exhuast doesnt appear
to be anything wrong there.

 

[Tom]

About £25-30 from most good car electrical places (ie not halfords).

http://fpuk.co.uk/technical/lambda.htm

 

[ryan]

what would be the symptoms of a broken lambar sensor tom?

 

[Tom]

Poor running, bad MPG, over/under heating engine.

 

[Sven]

To add to Tom, the easiest way to check is a ECO test (don't know the GB term), + the car won't accelerate good in 1. gear and it sometimes ”jerks” at slow speed.

 

[badboy76]

right bro... my mechanic told me the same thing in regard to the sensor.

 

[JonD]

Bloody Idiots!!!

Don't use Hi-q in Chapel Ash Wolverhampton.
Went back said to them need emmisions looking at and retesting.

They just retested it the whole test and failed it. I left the failed mot info in the car.

So I am waiting for them to get back to me with some news. Also last week when they serviced it they charged me for a part they didn't fit. They will be refunding me for this.

 

[Tom]

If its more than 24hrs they need to redo the entire test.

Do you know the emissions figures? CO HC etc..

 

[Sven]

Check the lambda sensor emissions, if the emissions are in limits the sensor is ok. If not it has to be changed.
Tom would probably know if it's something else.

 

[Tom]

It would be useful to know the emissions levels. 'failed' emissions could be caused by a multitude of things from leaking injectors, sticking valves, failed/blocked/melted cats, blocked filters, blocked exhaust, failed engine temp sensor....

 

[Anonymous]

It was the lambda sensor. Charged me £92!
I think thats for mot as well though which is
£35.