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

jamesey Nov 17, 2013

  1. jamesey

    jamesey Member

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    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?
     
  2. S4_dan

    S4_dan Fire up the Quattro! VCDS Map User

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    Could be related to your high emissions possibly? Poor plugs? too rich? etc
     
  3. S4_dan

    S4_dan Fire up the Quattro! VCDS Map User

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    Do you have issues starting the car when it's warmer outside?
     
  4. Broken Byzan

    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User quattro Audi A4

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    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
     
  5. jamesey

    jamesey Member

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    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
     
  6. PetrolDave

    PetrolDave Well-Known Member

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    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.
     
  7. Mike_B

    Mike_B Active Member

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    Where's your flat spot?
     
  8. jamesey

    jamesey Member

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    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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