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Hi,how can i disconnect Exhaust Gas Recirculation (EGR) in Daewoo/Chevrolet Kalos?

Today i changed rear lambda sond,btw what function does rear lambda sond have? and fuel pump,because its a serial error with fuel meter thats why they have to change it completly.When the mechanic remove lambda sond it was burned,how the hell that could happen??I spoked with the service in my neighb...

Mechanic didnt tell me anything for the code,but he remove the EGR valve and the valve is full,i dont know how to say this in english,the valve has 3 holes and all 3 holes are filled only very little holes exist. Today i was again in the service for the check lamp,but this time my rear lambda sond b...

I will try compression test,because my engine sometimes work louder,and sometimes he doesnt have the power when i press the gas.
If the compression test fail what i have to do?

Sorry if i am such pain in the ass

My friend Otto,doesnt follow the forums.
Thank you for your quick response,can you tell me whats the name of that device?

I am the owner of daewoo kalos,and i have big problems with the car. My check engine lamp is powering up every two weeks. ERG valve is constantly getting blocked.So in the service they changed it 3 times,and the check engine lamp has been on 7 times in one year. Across my friend in germany,i am find...

Can anybody tell me where does daewoo\chevrolet have a factory in europe?
Thanks.