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is there a choke on a4 1.8Ts? tickover normal when cold

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by jamesey, Nov 17, 2013.

  1. jamesey
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    jamesey Member

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    [Nov 17, 2013]
    hi do these a4 1.8ts avj have a automatic choke anywhere now its cold i can start the car ok but the revs are still around 800 rpms , surely that should be higher? does anyone know?
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  3. S4_dan
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    S4_dan Fire up the Quattro! VCDS Map User

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    [Nov 17, 2013]
    Could be related to your high emissions possibly? Poor plugs? too rich? etc
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  4. S4_dan
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    S4_dan Fire up the Quattro! VCDS Map User

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    [Nov 17, 2013]
    Do you have issues starting the car when it's warmer outside?
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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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    [Nov 17, 2013]
    if the CTS is faulty, it's possible it's not reading the temp as low as it actually is, thus not apply the cold stat strategy
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  6. jamesey
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    jamesey Member

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    [Nov 17, 2013]
    ive just fitted a genuine tmp sensor the one at the back of the head and its still the same , not got the error code now that told me it needed a sensor.
    it starts the same when warm , starts ok hot or cold , i do have a flat spot whilst accelerating but maybe something else.lol
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  7. PetrolDave
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    PetrolDave Well-Known Member

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    [Nov 18, 2013]
    Fuel injected cars don't have a choke, they use temperature sensors (intake temperature and coolant temperature) to determine when they need to inject extra fuel for a cold start.

    Try doing a FULL VCDS scan and see what fault codes it shows.
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  8. Mike_B
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    Mike_B Active Member

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    [Nov 18, 2013]
    Where's your flat spot?
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  9. jamesey
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    jamesey Member

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    [Nov 18, 2013]
    hi , my flat spot is only every now and then and its usually when its semi warm when im acelerating hard

    got a code tonight on my obd scanner it said 16502 coolant sensor low?
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