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

Jumping RPM Needle

Discussion in 'A3/S3 Forum (8L Chassis)' started by mordz, Apr 24, 2007.

  1. mordz
    Offline

    mordz Audi S3 (2000)

    Joined:
    Mar 14, 2007
    Messages:
    305
    Likes Received:
    0
    [Apr 24, 2007]
    Strange one this,

    Went to a customers about 6 ish last night - was there for around 2 hours.

    when i left i started the engine and it imediatly stalled. started it again and it was fine. stuck the xenons on and set off. as driving along the needle was jumping up and back down to correct reading as if someone was zapping it.

    i could make it go away by turning both my main lights and side lights off.

    after driving for 10 mins it seemed to stop

    anyone have any ideas?
    #1
  2. Ads

    Ads

    [Sep 21, 2014]

  3. Aky
    Offline

    Aky Aky

    Joined:
    Nov 21, 2006
    Messages:
    1,512
    Likes Received:
    2
    [Apr 24, 2007]
    how about battery/alternator? Or MAF? MAF causes irratic idle. Battery not being recharged and using a lot of power with Xenons in use.

    Thats my opinion!
    #2
  4. mordz
    Offline

    mordz Audi S3 (2000)

    Joined:
    Mar 14, 2007
    Messages:
    305
    Likes Received:
    0
    [Apr 24, 2007]
    The actual RPM doesnt change (i mean you cant hear it reving)

    when i floored it up the slip road to the motorway the needel is doing it then.

    all the way home

    ill get the alternator checked along with battery - just thought it was wierd it effecting the needle like it did
    #3
  5. Caesium
    Offline

    Caesium My BM is fixed!

    Joined:
    May 26, 2004
    Messages:
    4,879
    Likes Received:
    4
    [Apr 24, 2007]
    xenon's don't draw anywhere near as much power as halogen lights, they work on a different principle, its like comparing an incandescent bulb with a fluorescent one.
    #4
  6. Aky
    Offline

    Aky Aky

    Joined:
    Nov 21, 2006
    Messages:
    1,512
    Likes Received:
    2
    [Apr 24, 2007]
    You could guess all day long - best getting it hooked up to VAG COM see whether it throws up any faults
    #5

Share This Page