omega 2L just fitted a cat to it and think i have damaged the little thing that screws into it with wires?

Question

into it can you tell me what it is called so can get replacement and rough price,and now the light on the dash comes on for engine electrical fault could this bit be course of it,help please

Answer 1

Hi there what you have damaged is the Lambda sensor which monitors the gases the flow through the exhaust and controls the fuel/ air mixture injected in to your engine via the ECU (contril unit) it should have 4 wires on it and it isnt cheap for this model as some people say i had a cavalier 2.0L and my replacement was over a hndred pounds. There are two type of sensor one works on voltages from 0.1 millivolt to one volt these are the cheaper zicronium sensors, unfortunatley the ones on the vauxhaull are titanium and work on a higher voltage of 0.1 millivolt to 6 volts. If you try to fit the cheaper sensor then it will be ok at tickover but when you accelerate the engine management light will come on again as the voltage generated will be outside the sensor capacity and the ecu will think it is faulty again and this will cause the engine to be overfueled damaging the new cat you have just fitted
There are some independant vauxhall specialsts out there or a daeler will seel you one sadly it wont be as cheap as £30 your looking around £145

Answer 2

The bit stickin out of the exhaust is a lambda sensor...£15. max . If its connection to ecu was interupted/is faulty this will flash dash light up

I'm a mechanic!

Answer 3

If you check out the links below you will find the correct lambda sensor for your Omega, and the price from that company.

Answer 4

this is a lambda sensor and can cost around £90 and needs to be done properly so best get a mechanic to do

Answer 5

the thing with wires is the lambda sencer and will be about 50 quid 70 euros in spain just bourt one for opel frontera

Answer 6

could be the lambda sensor dont know the price probably expensive