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Thread: 02 Sensor

  1. #1
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    confused 02 Sensor

    Could someone tell me if the top o2 sensor on the exhaust ( 2003 vectra 2.2 sri ) has a built in heating element? My emission light is on and i had it on the computer a few months ago and they said the heating element on the top 02 sensor has gone ( well i think it was the top one ) ? ( i can't find my printout to say which one it was ) Well i need to order one from vauxhall and they don't know if it has a heating element on the sensor ( some good they are )
    Bottom line is i don't want to spend £99.46 on the wrong sensor?
    Last edited by speedo; 18th December 2007 at 12:20.

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    Try here http://www.lambdapower.co.uk/ should be a bit cheaper

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    Cheers for that but i have already ordered it from vauxhall. I just hope he ordered the correct one, part no 12573936 which he gave as he sounded a bit of a dork

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    Yes that seems to be the one, top one is known as "position 1" or "pre cat" the rear one is "position 2" or "post cat. most of them have heater elements in them these days.

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    Cheers for the replies i feel more at ease now. Do i need to tech2 it to remove the emission light on my dash ( after i fit it ) or can i dis-conect my battery for 30 mins

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    If it's got 4 wires going into it then yes it has a built in heater element.
    The 2.2 has the same 02 sensor as the 20t I think mate.

  7. #7
    Regular Member Gsi3.2's Avatar
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    Quote Originally Posted by speedo View Post
    Cheers for the replies i feel more at ease now. Do i need to tech2 it to remove the emission light on my dash ( after i fit it ) or can i dis-conect my battery for 30 mins
    just do the 'battery off' reset and if the fault is no longer present, it will stay unlit.

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    Could someone tell me the easiest way to change the top 02 sensor? I have my new one but i can't get the old one out? I have the 22mm spanner but you can't get the leverage or room to turn it and i don't want to cut the wire off to use a socket. Any help would be much appreciated?

  9. #9
    Regular Member Gsi3.2's Avatar
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    what you need is a lambda sensor socket...the proper tool for the job....it has a cutout for the wiring loom...not dear to buy, but a specialist tool nonetheless..

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    Cheers for the that, I will see if i can get one tomorrow.

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