Hi
Have a problem with the mrs car its a mk4 astra 1.6 16v T reg
last years mot it failed its emissions test.so first thought is cat is broken so had new one fitted took it back and still failed so up next was the lambda sensor but after fitting this when driving normal every now and again the engine management light would come on it would go back out if you thrashed it a bit which was weird.it still failed mot so thought faulty cat so had this swapped over i then took it for its re test thrashed it to make sure cat was working nice good. and it pass so didnt think anything of it apart from engine light was still coming on. It now mot time again and yes its failed on emissions again you have the following:
(1) Exhaust emissions carbon monoxide content after 2nd fast idle excessive.
(2) Exhaust emissions lambda reading after 2nd fast idle outside specified limits.
Now i have changed the lambda sensor again which i thought would sort it the engine management light does not come on anymore.but it still failed :doh:
not having much luck with it so before i put another cat on anything else i could check?
Have a problem with the mrs car its a mk4 astra 1.6 16v T reg
last years mot it failed its emissions test.so first thought is cat is broken so had new one fitted took it back and still failed so up next was the lambda sensor but after fitting this when driving normal every now and again the engine management light would come on it would go back out if you thrashed it a bit which was weird.it still failed mot so thought faulty cat so had this swapped over i then took it for its re test thrashed it to make sure cat was working nice good. and it pass so didnt think anything of it apart from engine light was still coming on. It now mot time again and yes its failed on emissions again you have the following:
(1) Exhaust emissions carbon monoxide content after 2nd fast idle excessive.
(2) Exhaust emissions lambda reading after 2nd fast idle outside specified limits.
Now i have changed the lambda sensor again which i thought would sort it the engine management light does not come on anymore.but it still failed :doh:
not having much luck with it so before i put another cat on anything else i could check?