AH FabricationsChris Nott
Results 1 to 6 of 6
  1. #1
    1st Gear

    Status
    Offline
    Join Date
    Feb 2007
    Location
    Manchester
    Posts
    138

    high pitch mechanical noise when idle

    Hi Lads,

    I have noticed recently that when the car is idling, a high pitch mechanical (or air sound) going "~he~he~he" can be heard from the right side of the bonnet, maybe somewhere near the right front wheel.

    When driven for a bit the noise seems to disappear.

    Do you have a clue what that could be???

    It makes my car sound cheap.

    Thanks for your help !

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    macattax's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Oct 2006
    Location
    Ireland
    Posts
    451
    Sounds like a worn belt to me but without a better description I cant be sure m8.
    Is that the right side if you were standing in front of the car looking into the engine?

    FACELIFT 99.5

    Current Mods: RNS-E MMI Conversion,Carbonio CAI,
    Baileys DV30 valve, Tinted windows, Xenon H.I.Ds, Bosch Aerotwins.


    Planned mods: Rieger Kit,Engine Tuning, Leather sports seats.
    Accomodation when the missus kicks me out for wasting money on a car.

  4. #3
    1st Gear

    Status
    Offline
    Join Date
    Feb 2007
    Location
    Manchester
    Posts
    138
    Hi Maca,


    No it is on the lewft when standing in front of the car. And the belt has been changed 10K miles ago....


  5. #4
    enda1's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Jan 2006
    Location
    Ireland
    Posts
    439
    Sounds like it might be the valve for activated charcoal filter. If you check it should be located on top of the air box. it only operates at times to vent fumes to the charcoal filter
    Enda1

    96 S6 2.3T
    99 A6 1.8T SE
    93 80 2.0 (gone)
    93 Kawasaki ZZR600

  6. #5
    Markey's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Apr 2004
    Location
    KENT
    Posts
    2,143
    Does the car have air con?

    If so it could be the pump of the tensioner that sits on the belt that goes to the pump.
    A4 Avant project now started ! see this thread ! http://www.audi-sport.net/vb/a4-s4-forum-b5-chassis/43296-bit-project-going.html
    If you think my post had a usefull purpose please say thanks

  7. #6
    waveform2's Avatar
    * J e d i *

    Status
    Offline
    Join Date
    Oct 2004
    Location
    Scotland
    Posts
    435
    I'd doubt its the charcoal filter it makes a slow/fast clicking noise altho i spose if it was f00ked it might make a diff noise but from experience its just a solenoid valve that opens and closes depending how much exhaust fumes need to pass through (I think) so sounds a strange noise for a valve to make.

    The n80 valve looks like this without the tape



    Start up your car give it some revs then go listen for a fast clicking sound to rule that out.

    I've since repaired mine with some sticky stuff from halfrauds.

    Only other noise i've had thats like you describe is my whining power steering pump a couple of audi's ago but that wouldnt go away i wouldnt think.

    Cheers

    Derek

    1999 A4 1.8 Turbo Quattro Sport - Xenons - Magic Tree

    Now gone:

    2000 A4 1.8 Turbo Quattro Sport - 18" RS4s - Xenons - Remapped 210+bhp - +More - Went bang now dead.

    1998 A4 1.8 N/A SE - 18" RS6s - Xenons - Angel Eyes - Fully Colour Coded - Lowered - Full Stainless Exhaust - +More - Writen off by a twit in a rx8

    My Current 1.8T Quattro Sport


 

 

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