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o2 Sensor and Spark Plugs Help

Discussion in 'A3/S3 Forum (8L Chassis)' started by Steve Welch, Aug 30, 2013.

  1. Steve Welch
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    Steve Welch New Member

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    [Aug 30, 2013]
    I have performed a search and only found details on the 1.8t engine. I have a 99 A3 1.6 and have come across a few queries/problems.

    1: Does my model have 2 x o2 sensors?
    2: If it has two where is the pre cat lambda sensor located and how do i get to it?
    3: How do i remove the HT leads to get to the spark plugs? I tried pulling and twisting but i didnt wnat to force them excessively.

    Thanks.
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  3. jay1601
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    jay1601 Well-Known Member

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    [Aug 30, 2013]
    will be on the manifold or on the down pipe. can't be too hard to find. will need a 22mm open ended spanner or a 22mm lambda socket.

    just pull them out. if they are the same when i had a 1.6
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