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Model specific boards => Golf mk3 => Topic started by: nhop10 on 12 June 2013, 18:50

Title: oxygen sensor?
Post by: nhop10 on 12 June 2013, 18:50
done a quick search but nothing. i had my car hooked up to vagcom today and came up with a few fault codes. one for an oxygen sensor? anyone know what this is and could it be causing my dodgey idling on start up?

cheers
Title: Re: oxygen sensor?
Post by: ant_gti on 12 June 2013, 18:55
oxygen sensor=lambda sensor its screwed into the cat  :smiley:
Title: Re: oxygen sensor?
Post by: nhop10 on 12 June 2013, 22:47
Quote from: ant_gti on 12 June 2013, 18:55
oxygen sensor=lambda sensor its screwed into the cat  :smiley:

cool cheers. so surely shouldnt have an effect on the starting and idling issues..
Title: Re: oxygen sensor?
Post by: itavaltalainen on 12 June 2013, 23:16
which engine have you got, i.e. engine code (and don't come back saying a 2.0 8v)?
Title: Re: oxygen sensor?
Post by: madsb on 13 June 2013, 09:04
Not the most likely reason for an uneven idle. Search for threads on this.
Title: Re: oxygen sensor?
Post by: nhop10 on 13 June 2013, 22:22
Quote from: itavaltalainen on 12 June 2013, 23:16
which engine have you got, i.e. engine code (and don't come back saying a 2.0 8v)?

AGG
Title: Re: oxygen sensor?
Post by: sharki786 on 13 June 2013, 23:43
Lambda sensor will make the car hunt (bounching revs) been there :rolleyes:
Title: Re: oxygen sensor?
Post by: nhop10 on 14 June 2013, 22:39
are the lambda sensors the same on the 2litre and the vr6? mates got one breaking atm
Title: Re: oxygen sensor?
Post by: sharki786 on 15 June 2013, 22:35
Not sure. You could always look on eurocarparts???
Title: Re: oxygen sensor?
Post by: spudboy6 on 16 June 2013, 23:56
Have checked and compared pt numbers and they do use the same sensor .
Lambda is constantly changing the mixture of air/fuel and of not reading correctly / working will give you a rough idle.  But more than likely its a dirty inlet / throttle as when a lambda sensor fails it will run a factory safe mode to the lambda to prevent over fueling and burning the cat out

Title: Re: oxygen sensor?
Post by: nhop10 on 17 June 2013, 22:47
Quote from: spudboy6 on 16 June 2013, 23:56
Have checked and compared pt numbers and they do use the same sensor .
Lambda is constantly changing the mixture of air/fuel and of not reading correctly / working will give you a rough idle.  But more than likely its a dirty inlet / throttle as when a lambda sensor fails it will run a factory safe mode to the lambda to prevent over fueling and burning the cat out

wicked. but it came up as a fault code when plugged in so i imagine its still worth changing. i was planning on cleanign the throttle body anyways to see if that helps
Title: Re: oxygen sensor?
Post by: spudboy6 on 19 June 2013, 23:17
Oh yea don't get me wrong if there is a fault code for it then its had it for sure . but what i was getting at is they run a safe mode when they fail and run a certian mix to prevent damage to the cat so you may find the idle issue is unrelated or may be related with a mk3 nothing is certian and they certianly love new parts espicaly coil packs .

think i just saw your car parked up in the greys road car park earlier about 10.30 ? looks nice if it was yours ! ,
Title: Re: oxygen sensor?
Post by: nhop10 on 19 June 2013, 23:59
yh think ill get it changed. yeh it was, few bits need sorting out but cheers  :wink: