1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Problems starting (quick reply required)

Discussion in 'A4/S4 forum(B5 Chassis)' started by Ardz83, Jul 7, 2011.

  1. Ardz83
    Offline

    Ardz83 Member

    Joined:
    Jun 18, 2011
    Messages:
    118
    Likes Received:
    0
    [Jul 7, 2011]
    Hi guys.
    I was at sainsburys just now and came out to start the car and it would start,it would fire but would just die,it wouldnt let me rev it at all to keep it going. It just died no matter what i done.

    After about 7 attempts to start it,the car went back to normal with no problems,i did feel a little flat spot or hesitation under acceleration but seemed ok.

    Im abit worried because MOT is on tuesday.

    Can anyone shed any light on what might be causing this????

    There are no mods bar a forge splitter and boost gauge.

    Thanks in advance
    Dan
    #1
  2. Ads

    Ads

    [Oct 21, 2014]

  3. B5NUT
    Online

    B5NUT Well-Known Member VCDS Map User

    Joined:
    Feb 6, 2010
    Messages:
    2,346
    Likes Received:
    267
    [Jul 7, 2011]
    Immobiliser is my guess, had the same fault on my car. I always wait for the the immobiliser light to go out before starting the car. What year is your A4?
    #2
  4. Ardz83
    Offline

    Ardz83 Member

    Joined:
    Jun 18, 2011
    Messages:
    118
    Likes Received:
    0
    [Jul 7, 2011]
    Its a 1998 on a R plate. Thanks for the quick reply. I do leave it 10-15 seconds before i start it. wouldnt it not even fire if it was the imobilizer
    #3
  5. teo420
    Offline

    teo420 Member

    Joined:
    Jun 15, 2011
    Messages:
    49
    Likes Received:
    0
    [Jul 7, 2011]
    if it was immo then it would simply not start
    low on fuel maybe ?
    maybe need a new fuel filter or u got a broken line somewhere
    spark plugs id check all that
    Last edited: Jul 7, 2011
    #4
  6. Ardz83
    Offline

    Ardz83 Member

    Joined:
    Jun 18, 2011
    Messages:
    118
    Likes Received:
    0
    [Jul 7, 2011]
    The car had a service with new plugs and that 300 miles ago. Also got 100 miles in the tank.
    #5
  7. teo420
    Offline

    teo420 Member

    Joined:
    Jun 15, 2011
    Messages:
    49
    Likes Received:
    0
    [Jul 7, 2011]
    what about that fuel filter
    #6
  8. Ardz83
    Offline

    Ardz83 Member

    Joined:
    Jun 18, 2011
    Messages:
    118
    Likes Received:
    0
    [Jul 7, 2011]
    that was not changed.
    #7
  9. aragorn
    Online

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

    Joined:
    Jan 30, 2008
    Messages:
    15,696
    Likes Received:
    331
    [Jul 7, 2011]
    The immo allows the car to start, then shuts the engine down after about 1 second.

    Given your symptoms, it sounds exactly like an immo problem. Could be a faulty reader coil or a dodgy transponder.

    If it does it again, look at the dash and see if the key symbol is flashing.
    #8
    Ardz83 likes this.
  10. B5NUT
    Online

    B5NUT Well-Known Member VCDS Map User

    Joined:
    Feb 6, 2010
    Messages:
    2,346
    Likes Received:
    267
    [Jul 7, 2011]
    Yes the car will start but then shutdown with the immo flashing, my A4 has the same fault, there is also a fault code on th engine "engine started by immobiliser"

    #9
    Ardz83 likes this.
  11. Bradderz_1988
    Offline

    Bradderz_1988 Dont replace it, Upgrade it !!

    Joined:
    Aug 19, 2010
    Messages:
    3,287
    Likes Received:
    113
    [Jul 7, 2011]
    +1 With Aragorn !
    #10
  12. Ardz83
    Offline

    Ardz83 Member

    Joined:
    Jun 18, 2011
    Messages:
    118
    Likes Received:
    0
    [Jul 7, 2011]
    Yeah i think this is the problem guys. How can i stop it from doing it again?
    Thank you all for you replies
    #11
  13. skinz
    Offline

    skinz Member

    Joined:
    May 12, 2011
    Messages:
    233
    Likes Received:
    1
    [Jul 7, 2011]
    im havin the same problem, thing is i can go shop not put my alarm on and when i get bk in it still does it, how could the immo kick in when i've not set the alarm
    #12
  14. B5NUT
    Online

    B5NUT Well-Known Member VCDS Map User

    Joined:
    Feb 6, 2010
    Messages:
    2,346
    Likes Received:
    267
    [Jul 7, 2011]
    Immo is not linked to the alarm, the immo kicks in every time you start the car, checks to make sure it's your key starting the car. On older model a4 (immo 1 i think) there is a White box behind the upper foot well trim, clean up the contacts and that may fix your fault (did on my a4)
    #13
  15. jonpaul
    Offline

    jonpaul New Member

    Joined:
    Jun 29, 2011
    Messages:
    9
    Likes Received:
    0
    [Jul 7, 2011]
    Got the same problem on my facelift where's the box for that ?
    #14
  16. B5NUT
    Online

    B5NUT Well-Known Member VCDS Map User

    Joined:
    Feb 6, 2010
    Messages:
    2,346
    Likes Received:
    267
    [Jul 7, 2011]
    It's in the cluster & ecu. My guess is the pickup coil in the ignition barrel has failed, also had that fail on another a4. One new barrel later and a re-tumbel to fit the original key and it was fixed.
    Last edited: Jul 7, 2011
    #15

Share This Page