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Loud wining/whizzing noise on start up

HOTTIGGER Jun 21, 2012

  1. HOTTIGGER

    HOTTIGGER Member

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    hi all as above, my s3 makes a loud wining noise when first started, seem to be only when its cold or bin left for a bit, my m8 said it was the cold start on the air compreser, ive scearched threads for cold start on the air compreser but no joy, its not coming from the starter or aulnater, i could not really tell if it was coming from the air con pump, its a mad loud whining/drilling noise and it sounds pants. it goes off when you drive off or leave it long enough it will seem to wind down and the revs drop to normal, ive comw across threads about sai pumps. could this be wots making my mad noise? can it just be unpluged or sumthing? thanks in advance
     
  2. Paradox1

    Paradox1 Well-Known Member

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    i started to get the same a few days ago. at a guess i think its the SAI but not 100%
     
  3. Gavin G

    Gavin G Active Member Audi A4 S-line owners group TDi saloon

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    Think this is common mine does it aswell and it's related to the oil pick up maybe someone else can confirm this? It does no harm as far as im aware.
     
  4. Paradox1

    Paradox1 Well-Known Member

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    oil pick-up??

    My old pump isnt even a year old. I swear I could right a book about the problems with these cars lol
     
  5. HOTTIGGER

    HOTTIGGER Member

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    i think mine is sai after reading on hear, but like you id like to be 100 percent sure m8.

     
  6. lgooch

    lgooch Well-Known Member VCDS Map User

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    Sounds like the secondary air intake on its way out. All it does is allow the CAT in your exhaust warm up quicker, hence if you rev the engine from cold it will quieten down quicker and the revs will drop slightly. Search on uk-mkivs.net as there is a how to over there on how to fix them. The noise should be coming from the drivers side front wheel well
     
  7. HOTTIGGER

    HOTTIGGER Member

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    hi m8 thanks for reaply, it sounds like its come from the front of the car down by the air con pump , i carnt quite pip point it, it a loud hover/drill type sound.


     
  8. kwistof

    kwistof South East Events Moderator Regional Rep

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  9. lgooch

    lgooch Well-Known Member VCDS Map User

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    does it sound like this. if it does then you have your answer. The SAI is not far from the air con pump but you would easily be able to tell if it was the air con pump by turning it on and off.

    Audi secondary air injection pump - YouTube
     
  10. lgooch

    lgooch Well-Known Member VCDS Map User

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  11. s3gazz

    s3gazz Well-Known Member

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    mine does the same too but its getting louder my pick up pipe is clean and air con working fine so god nose plus i dont have a secondry air pump on my amk
     
  12. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator Audi S3

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    If its a high pitched squeal type noise its the fans... when it does it again, turn off the aircon by hitting the econ button... if the noise goes its the fans..

    Mine does this

    <tuffty/>
     
  13. HOTTIGGER

    HOTTIGGER Member

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    hi m8 thanks for the reaply, yes thats the sound its making, will it be ok to just unplug the wires ?


     
  14. HOTTIGGER

    HOTTIGGER Member

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  15. Paradox1

    Paradox1 Well-Known Member

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    i think if you unplug it you may get a EML but thats all
     
  16. lgooch

    lgooch Well-Known Member VCDS Map User

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    Yes take the multiplug off. Start your car and if the noise is not there then you have pinpointed your problem
     

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