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

Glow plug problem costing me a fortune trying to find cause

Discussion in 'A3/S3/Sportback (8P Chassis)' started by chale989, Feb 8, 2013.

  1. chale989
    Offline

    chale989 Member

    Joined:
    Nov 26, 2012
    Messages:
    80
    Likes Received:
    0
    Ok so i have a 2005 2.0 tdi but when i turn the key the glow plug light will not go out.

    I have 2 options , turn the key 15-20 times or sit and wait for 5-10 minutes and the light will go off itself.

    I have so far replaced all 4 glow plugs , put in a brand new battery and had the key re programmed.

    Any Ideas anyone?

    Once the engine is warm, if i turn it off and then turn key then the lights will go straight off. Its usually when engine has been standing for longer then 10 minutes.
    #1
  2. chale989
    Offline

    chale989 Member

    Joined:
    Nov 26, 2012
    Messages:
    80
    Likes Received:
    0
    Guys i really need advice. Ive had diagnostics ran 3 times from 3 different places and nothing shows
    #2
  3. Sidhu88
    Offline

    Sidhu88 Member

    Joined:
    Jan 31, 2012
    Messages:
    793
    Likes Received:
    74
    U sure its the glow plugs? As in, isit a solid light or does it flash? If it flashes could be a maf or lambda issue, mine would flash before hittin limp mode when my maf was on its way out. Also one time the turbo was having a once over we ran the car with no intake pipe on the turbo and it flashed continuously too.
    #3
  4. Sidhu88
    Offline

    Sidhu88 Member

    Joined:
    Jan 31, 2012
    Messages:
    793
    Likes Received:
    74
    Also what plugs did u replace it with? Oem?
    #4
  5. Lewis583
    Offline

    Lewis583 Active Member

    Joined:
    Mar 15, 2010
    Messages:
    874
    Likes Received:
    70
    I'm guessing you have had the car scanned with a decent diag tool? VCDS would be preferable. Fault codes?
    #5
  6. mike foster
    Offline

    mike foster Fossie

    Joined:
    Jan 16, 2010
    Messages:
    3,969
    Likes Received:
    79
    Glow plug wiring harness has been known to cause intermittent problems.
    #6
  7. chale989
    Offline

    chale989 Member

    Joined:
    Nov 26, 2012
    Messages:
    80
    Likes Received:
    0
    Plugs were replaced by bosch ones that were reccomended.

    Scans have been done by audi , the aa and a vw speciliast garage.

    How much is a new glow plugs wiring harness?

    The light stays light, not flashing.

    $once engine is on then there are no issues what so ever. No limp mode or any warning lights
    #7
  8. BradV6
    Offline

    BradV6 Member

    Joined:
    Aug 5, 2012
    Messages:
    73
    Likes Received:
    3
    Can the glow plug relay cause a problem? I remember something like this on my MK4 golf
    #8
  9. 964kevin
    Offline

    964kevin Member

    Joined:
    Feb 20, 2010
    Messages:
    103
    Likes Received:
    7
    What triggers the Glow Plug to come on? thats where I would be looking.... Temp sensors etc.

    Kevin
    #9
  10. chale989
    Offline

    chale989 Member

    Joined:
    Nov 26, 2012
    Messages:
    80
    Likes Received:
    0
    There are no triggers what so ever. Just sit and wait 5 mins or so and it a click noise happens and then it will go off.
    #10
  11. mike foster
    Offline

    mike foster Fossie

    Joined:
    Jan 16, 2010
    Messages:
    3,969
    Likes Received:
    79
    Glow plug wiring harness is approx. £100
    #11
  12. NHN
    Offline

    NHN Modmetractor Site Sponsor

    Joined:
    Jan 14, 2008
    Messages:
    27,221
    Likes Received:
    1,218
    Yeap I would test glowplug loom as known to be a problem on some, clicking is probably relay for the glowplug system would need to check schematics to confirm.
    #12

Share This Page