Sky InsuranceAH Fabrications
Results 1 to 5 of 5
  1. #1
    Sammo's Avatar
    Reverse Gear

    Join Date
    Apr 2008
    Epsom, Surrey

    S2 Running Problem

    Hi Guys

    Basically if I accelerate hard the car will start to boost then it will suddenly just cut everything to the extent you nearly smack your face on the steering wheel. After doing it the once it will just keep doing it no matter how hard or soft you accelerate.

    I had the whole front of the car off the other day and found a split in the Michelin Man hose at the front which I replaced with a Samco hose. After putting it all back together the problem is still there. I also have noticed that the bolt on top of the wastegate is unwound quite far.

    The last thing which I think is very much connected to the problem is when you are accelerating, before it ****s its pants you can hear the air being sucked in(or pushed out) and when you change gear you can really hear the dump even though it just has a standard recirc valve.

    Someone please help as it making me want to get rid of the car. It has done this since the day after I bought the bloody thing!

    Oh yeh and its a 3B engine.



  2. # ADS
    Join Date
  3. #2
    Rev-head's Avatar
    6th Gear

    Join Date
    Oct 2004
    Have you run to see what faults it shows?

    HAve you done a output test as well with ?

    Does the issue happen when hot and cold or just hot?

    Your problem does sound like boost issue but need to get first to confirm
    Things i would do if you dont have at hand :
    Check earth for ECU which is situated on the inlet manifold closest to the bulk head 2 points

    Double check the knock sensors that are located on the block under IM as well

    Would not be concerned about wastegate as I take it the car run ok at some point and the wastegate operation is all mechanical
    Urq RR
    S2 Coupe...RS2 +
    S2 Avant (slipper wagon spec)

  4. #3
    Reverse Gear

    Join Date
    Apr 2009

    ur overboostin problem

    i had exactly the same thing boost then cut off and be touchy after that then one day on my weekly drive up the country my car had no boost at all. once i stopped at house it would turn over not fire, i put vagcom on and it said crank sensor and overboostin, so i replaced the crank sensor put the new one on, 115 quid from audi there abouts, car wouldnt fire up but would crank but thatwas my fault as bending the crank sensor around i split a wire, so be carefull as they are mostly britle wires. so get ur s2 on vagcom see what it says, my guess is crank sensor as if thats playing up ur timing for air and fuel aint right so when u go for big boost it safe guards and shuts down so it wont blow up.... hope this helps and i done mine about 3 weeks ago so i do know. cos mine flys up the roadevery gear every rev its like sex but no nagging woman after

    wish i looked at the date added lol my apologise but usefull info for ppl so wont delete
    Last edited by stus2; 23rd April 2009 at 20:08.

  5. #4
    S3quatt's Avatar
    Flat Oot like a ducks Foot

    Join Date
    Jan 2007
    Sunny Scotland
    Had that same problem caused by split TIP hose.

    Also found a slight judder after which came down to the cone filter. put back standard air box & panel filter & engine went back to being smooth as ever.
    ...... Now this one's MUCH better!...

  6. #5
    Broken Byzan's Avatar
    Photographic Moderator

    Join Date
    Apr 2004
    Cardiff, United Kingdom

    My Social Networking

    Follow Broken Byzan On Twitter Add Broken Byzan on Facebook Add Broken Byzan on Google+ Visit Broken Byzan's Youtube Channel
    Thats fuel cut due to overboost maybe. You need to Vag-com it to see if there are any codes on ther first



Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO