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

A4 TDI 130bhp no power

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by Bonso, Nov 12, 2004.

  1. Bonso

    Bonso New Member

    Joined:
    Oct 28, 2004
    Messages:
    3
    Likes Received:
    0
    Hello there,

    Have a problem which started last night, everytime I change gear my car loses power for about 1 or 2 secs then takes off like a rocket.

    Any suggestions on what this might be?

    Regards
    Bonso
     
  2. Google AdSense Guest Advertisement



    to hide this advert.
  3. At what rpm are you changing gear?

     
  4. jojo

    jojo Looking for Boost!
    Staff Member Moderator quattro Audi S3

    Joined:
    Sep 4, 2003
    Messages:
    27,336
    Likes Received:
    2,433
    [ QUOTE ]
    Bonso said:
    Hello there,

    Have a problem which started last night, everytime I change gear my car loses power for about 1 or 2 secs then takes off like a rocket.

    Any suggestions on what this might be?

    Regards
    Bonso


    [/ QUOTE ]

    First of all, Welcome to the Forum Bonso /ubbthreads/images/graemlins/beerchug.gif, how olds the car and what mileage?
     
  5. Bonso

    Bonso New Member

    Joined:
    Oct 28, 2004
    Messages:
    3
    Likes Received:
    0
    changing gear at around 1500 to 2000rpm, car is july 2001 and 102,000 miles. Full service history.

    Regards
    Bonso
     
  6. Hi Bonso, It may just be because the revs are too low after the gearchange, so you've dropped into a low torque area. Also, you'll get a fair amount of turbo lag after changing gear if you change that early. Unless I am foloowing some slow traffic, I will change up at anything between 3000 and 4500rpm, depending on how much of a hurry I am in. The engine then drops straight back into the powerband and turbo lag is almost undetectable.

    Believe it or not, it will be more economical to use more of the rev range when accelerating, as you are getting closer to the engine's more economical torque peak, as long as you change up when at your desired speed.
     
  7. Bonso

    Bonso New Member

    Joined:
    Oct 28, 2004
    Messages:
    3
    Likes Received:
    0
    Do you think it might be the air flow meter as I have no power at all until the turbo kicks in?
     
  8. jojo

    jojo Looking for Boost!
    Staff Member Moderator quattro Audi S3

    Joined:
    Sep 4, 2003
    Messages:
    27,336
    Likes Received:
    2,433
    102K miles, I take it you've done most if this yourself... sound like it could be the MAF sensor, which would be like **** throttle response an the turbo lag you are feeling, costs around £80 from your local stealer.
     
  9. Mcgough

    Mcgough Member

    Joined:
    Oct 13, 2004
    Messages:
    847
    Likes Received:
    0
    at worst mate you will have a new ECU like me
     
  10. my a4 has no power between 1000 and 1500 rpm, its always been like that though, soon as it hits 1500 rpm it launchs.
     
  11. Try driving it as Hingy suggested. Then post the results.

    I know that ours is flat as a pancake at 1000-1500 and it's only 4 months old.

    Dave
     
  12. gc48067

    gc48067 Member

    Joined:
    May 30, 2004
    Messages:
    278
    Likes Received:
    0
    [ QUOTE ]
    Bonso said:
    Changed MAF sensor everything fine for 3 weeks. Now once or twice a week everytime I change gear have no power for about 2 or 3 seconds (car feels like you put the brakes on and cars behind almost rear end me) then takes off but still not at full power rate. Have also noticed that if I lift off then reapply the car jerks as if its getting no fuel.


    [/ QUOTE ]

    You may wish to try some of the BMW forums - this kind of braking then accelerating hard seems to be an optional extra on some of their models (or is it just me...)

    [ QUOTE ]
    Bonso said:
    Any suggestions as my wife refuses to drive the car at the moment.



    [/ QUOTE ]

    Is this a bad thing... /ubbthreads/images/graemlins/devil.gif

    Greg
     

Share This Page