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Thread: faulty lambda sensor

  1. #1
    Regular Member stephen g's Avatar
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    Default faulty lambda sensor

    can a faulty lambda sensor cause your car to burn more petrol? i am curently doing 26.2 mpg in my 2.0 t and thats just cruising no harsh accelaration i do have a faulty lambda sensor this is why i ask .

  2. #2
    Ex Vec-C Admin / Founder Duncan's Avatar
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    Yes it can increase your consumption. If the lamda sensor isn't working properly then it won't be giving accurate data and so the fuelling can't then be controlled accurately.

    If you mean you're getting 26mpg on a long run then that's not good, if you meant driving around locally/urban driving then that's about right TBH.

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    Regular Member n_hudson's Avatar
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    How much is the sensor? (non-trade)

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    Regular Member stephen g's Avatar
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    just checked mpg on the later 2.0 turbos and they are ever so slightly better why is that ?

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    Regular Member n_hudson's Avatar
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    They have a different map to lower emissions or something like that. (I think)

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    Quote Originally Posted by n_hudson View Post
    How much is the sensor? (non-trade)

    I just bought one for a Vectra B 2.2 from here, http://www.lambdapower.co.uk/partsearch.asp cost me £67 worked fine, phoned up to order and they were very helpful, part arrived next day, quite a bit cheaper than Vx.

  7. #7
    Regular Member jasonmma's Avatar
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    I got one for my Vec C from VauxPart on ebay (like an authorised Vauxhall re-seller) and 6 months warranty, £35 inc del

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    Regular Member nikroc's Avatar
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    Vehicle : 2t

    Trim : standard

    Engine : z20net

    Year : 08

    Mileage : 32000

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    On round town runs on average i get 22mpg..spirited driving and bsr remap...

    Have been thinking of removing the remap to compair economy...hmmm

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    Regular Member nelly452's Avatar
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    if the o2 sensor is gone yes you will burn more fuel ive had this problem with a few cars , the quite cheap to replace though.

  10. #10
    Regular Member armoured farmer's Avatar
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    havn mine replaced wednesday by vx...under warranty..

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