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AJQ engine and lambda sensors.... 1 or 2?

Discussion in 'A3/S3 Forum (8L Chassis)' started by hooley, Jul 31, 2009.

  1. hooley
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    hooley Member

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    Got a lambda sensor error code on my 180bhp AJQ engined 1.8TQS, but is there only a pre-cat sensor on this engine, or could it also have a post cat one as well.

    I think early cars only had the pre-cat. Can anyone confirm this?

    Cheers
    Jason.

    Don't want to buy the wrong one as I'm gettin some lean running at higher revs and burnt out a set of plugs. Ars3.
    #1
  2. hooley
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    hooley Member

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    anyone??
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  3. indiemike
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    indiemike ZoomZoom

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    On pre 2003 there are only 1 after there are 2.
    For part numbers and help I rang ...

    Contact CES
    Head Office:

    CES (UK) Ltd

    Knutsford Way

    Sealand Road Industrial Estate

    Chester

    CH1 4NS

    Tel (Exhausts Local): 01244 379279

    Tel (Exhausts National): 01244 372555

    Tel (Catalysts): 01244 379531

    Tel (Components): 01244 377118

    Fax (All Divisions): 01244 371248

    E-mail: info@cesuk.com
    #3
  4. HTC
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    HTC Active Member

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    AJQ has two sensors.

    Pre cat, wideband for fueling and a post cat for emmisions (measures how well the cat is doing it's job).
    #4
  5. hooley
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    hooley Member

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    Oh

    is this conflicting? Or are we saying that before 2003 the AJQ has 1 and post 2003 it has the 2???

    Sorry to ask the same question after you two went to the trouble of answering

    Cheers
    Jason
    #5

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