bit long story. maybe stupid but.
was preparing car for nct. was in garage to check emissions before go to test centre. it was bad. was guessed somewhere vacuum or exhaust leak. fixed exhaust, rechecked(some was replaced) vacuum pipes. go there for second time. still was bad but not to bad. blame was gone to BOV. replaced BOV. and go there third time emissions was very good(it was Tuesday).
after two days(Thursday) go to NCT. emissions was way too far from good. even on idle speed. in garage idle speed emissions was bad just first time.
NCT told me that could be O2 or cat. for cat nearly 100% sure its good.
and now funny story. today did memory read(black connector connected) no faults. did dynamic test for faults(green connector connected). showed up faults 32 O2 sensor. cleaned O2 sensor connector. tried clear memory( black and green connectors connected) again showed O2 sensor. but when was reading memory(black connector) it didn't show any faults. again tried clear memory(black and green connectors connected) in the end showed that memory cleared and no faults.
will go check emissions again to garage today. but it could be that O2 sensor playing stupid games? did memory reading would show O2 sensor faults or just in dynamic test mode(just green connector connected) it will show up?
PS might be one more thing. in garage emissions was checked with turbo timer on in NCT turbo timer was off.
was preparing car for nct. was in garage to check emissions before go to test centre. it was bad. was guessed somewhere vacuum or exhaust leak. fixed exhaust, rechecked(some was replaced) vacuum pipes. go there for second time. still was bad but not to bad. blame was gone to BOV. replaced BOV. and go there third time emissions was very good(it was Tuesday).
after two days(Thursday) go to NCT. emissions was way too far from good. even on idle speed. in garage idle speed emissions was bad just first time.
NCT told me that could be O2 or cat. for cat nearly 100% sure its good.
and now funny story. today did memory read(black connector connected) no faults. did dynamic test for faults(green connector connected). showed up faults 32 O2 sensor. cleaned O2 sensor connector. tried clear memory( black and green connectors connected) again showed O2 sensor. but when was reading memory(black connector) it didn't show any faults. again tried clear memory(black and green connectors connected) in the end showed that memory cleared and no faults.
will go check emissions again to garage today. but it could be that O2 sensor playing stupid games? did memory reading would show O2 sensor faults or just in dynamic test mode(just green connector connected) it will show up?
PS might be one more thing. in garage emissions was checked with turbo timer on in NCT turbo timer was off.