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Hard Starting when WARM

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by connasm, Oct 31, 2013.

  1. connasm
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    connasm New Member

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    [Oct 31, 2013]
    I have a 2005 A4, 2.0 TDI. Recently bought from a local dealer.

    Car starts perfect from cold, but when the engine is heated up it turns over a few times before firing and when it does fire the bremse light flashes a few times. What could be the problem? Car is still under warranty so I want to get it sorted ASAP. It has been back in the garage and they changed the thermostat sensor but it didn't work!

    Any help would be appreciated.
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  3. sidibear
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    sidibear Looking for Zombies !! Staff Member Moderator

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    [Oct 31, 2013]
    Breather hole in the filler cap blocked?


    Bremse light is a small machine gun. Rough area where you live if you have one fitted :laugh:
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  4. connasm
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    connasm New Member

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    [Oct 31, 2013]
    Must take a look at that too, thanks. I've also seen a good few people saying that it could be the temp sensor for the coolant. Garage seem a bit confused or not interested for some reason! :( The Bremse light flashes 3 or 4 times after a hard start why would that be?
    #3
  5. NHN
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    NHN Retrofitter - Audi - VW - Skoda - Seat Site Sponsor VCDS Map User

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    [Oct 31, 2013]
    Starter motor or coolant sender are common ones to check tbh when engines warm & bad starting.
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  6. connasm
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    connasm New Member

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    [Nov 1, 2013]
    Cheers for the advice. Hoping that it's the temp sensor on the coolant. Looks to be the easiest fix but knowing my look will turn out to be more!
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  7. pistonripper
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    pistonripper Member

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    [Nov 2, 2013]
    I had the same problem for a while now. Changed coolant and fuel temp sensor no difference. I'm thinking this may be a route to my mpg problem. Starts on first turn when cold. Anybody know any s@it hot techs in the Birmingham area.
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  8. connasm
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    connasm New Member

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    [Nov 3, 2013]
    What sort of MPG are you getting at the moment

    If you find the cure will you please let me know, I want to get this fixed before my warranty runs out in a month!
    #7
  9. lynallbel
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    lynallbel Active Member

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    [Nov 3, 2013]
    I havent a clue on audis, but on my wifes old mini, there were twos sensors, one for dash gauge, other for ecu.
    #8
  10. Big Al
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    Big Al A4 sold, a Lupo for now!

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    [Nov 3, 2013]
    Get yourself to Badger 5 in Gloucester for a fix mate. Alternatively Audi themselves are great in Birmingham and Solihull. Forget the local VW 'specialists' as they are all hopeless - as are Midland VW in Cannock.
    #9
  11. pistonripper
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    pistonripper Member

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    [Nov 4, 2013]

    im getting 22/24mpg...likewise if you find one let me know
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