Sky InsuranceEM Tuning
Results 1 to 7 of 7
  1. #1
    2nd Gear

    Status
    Offline
    Join Date
    Mar 2007
    Location
    Cambs
    Posts
    471

    1.8 T sounds like exhaust is blowing then starts up?

    Hi all,

    Recenty got the A3, on cold start up it sounds just like the exhuast is blowing, coming from under the bonnet id of thought it was from the manifold, but then the revs drop and it goes compltely silent?

    Is this normal? it sounds like its on choke, then warms and revs drop, or is it some kinda pressure release valve?

    Cheers for any info

    Dave

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    2nd Gear

    Status
    Offline
    Join Date
    Mar 2007
    Location
    Cambs
    Posts
    471
    anyone?!?

  4. #3
    buckas's Avatar
    4th Gear

    Status
    Offline
    Join Date
    Sep 2006
    Location
    south west wales
    Posts
    750
    completely normal, IIRC it's a secondary air pump/fan - Pumps air into exaust system during warmup to heat the cats up quicker. Emmisions device to lower pollution etc. lasts for about 1 minute

    drew

  5. #4
    2nd Gear

    Status
    Offline
    Join Date
    Mar 2007
    Location
    Cambs
    Posts
    471
    Wicked, cheers mate, put my mind at rest now

  6. #5
    shollis's Avatar
    flat in fifth.....

    Status
    Offline
    Join Date
    Jan 2007
    Location
    Derbyshire
    Posts
    48
    My 1.8 T did exactly the same thing when I got it (blowing of air sound for the first 60 seconds of start up from cold), it turned out that the rivets holding the secondry air pump together had broken so a lot of the air being produced went straight out of the side of the casing. They are a pain to get off but I managed to get at it enough to drill out all of the rivets which had broken and replace them with bolts. It is now a lot better although not silent but according to several specialists I have spoken to this is normal as the engines run like a bag of spanners when cold for emmisions reasons.

    Hope this helps.

  7. #6
    3rd Gear

    Status
    Offline
    Join Date
    Jan 2007
    Location
    Hertfordshire
    Posts
    520
    What he said :D Mine sounds like a tribal band playing under my bonnet until the revs drop, my friend commented on it the other day.

  8. #7
    silver75's Avatar
    Big Ron

    Status
    Offline
    Join Date
    Sep 2005
    Location
    at work
    Posts
    3,243
    Quote Originally Posted by shollis
    My 1.8 T did exactly the same thing when I got it (blowing of air sound for the first 60 seconds of start up from cold), it turned out that the rivets holding the secondry air pump together had broken so a lot of the air being produced went straight out of the side of the casing. They are a pain to get off but I managed to get at it enough to drill out all of the rivets which had broken and replace them with bolts. It is now a lot better although not silent but according to several specialists I have spoken to this is normal as the engines run like a bag of spanners when cold for emmisions reasons.

    Hope this helps.
    good post

    Big thanks mate im currently also having this problem and was wondering what it was

    Smart Roadster 03
    Ford Sportka 05

 

 

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