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G42 intake air temp sender

Discussion in 'A4/S4 forum(B5 Chassis)' started by Pornstarr, May 21, 2008.

  1. Pornstarr
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    Pornstarr Member

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    [May 21, 2008]
    Mine's showing up as faulty on VAG-Com.

    Occasionally it works, and reads right, but 90% of the time, it's showing a permanent 143 degrees C.

    Which I presume would be a contributing factor to the cars slowness. Being as the maximum range should be 70 something. I guess it's retarding the ignition and holding back the boost for fear of a melt down.

    I've ordered a new one (i think) from Audi. But I'm just wanting to check I've got the right thing.

    Audi have identified it as the sensor which is plugged in to the throttle body rubber boot (and then held in with a big steel bracket).

    I've identified that this is also the boost pressure sensor....by removing the plug with the engine running, which then maxed out the boost reading on the VAG com.

    Is it really two sensors in one. Or have Audi made a fuckup?

    It's £100+ quid. So I'd like it to be right the first time.

    Cheers,
    Ben:yellowrs4:
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  3. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [May 21, 2008]
    The temp sender is in the plastic housing on the back of the head, its either blue or black or the latest one is green. The air intake temp sender is in the inlet manifold right by the throttle body.

    What car is it?
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  4. Pornstarr
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    Pornstarr Member

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    [May 21, 2008]
    B5 S4 avant.
    It's the intake air temp sender I'm after.
    You say it's actually in the inlet manifold, rather than the throttle body rubber boot (where the two turbo pipes meet). ?
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  5. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [May 21, 2008]
    sorry my bad, it is in the IM on a 1.8t
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  6. Pornstarr
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    [May 23, 2008]
    So it seems that it is a combined sensor in the TBB.
    Boost pressure and Inlet temp.
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