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

Thermostat replacement

cadoc Nov 15, 2009

  1. cadoc

    cadoc Registered User

    6
    0
    1
    1998 A3 1.8

    I need to replace the the thermostat. I've been told by a mechanic that to do this he has to remove the starter motor to get at it.
    Is this true as there is no mention of it in the Haynes manual (which seems to describe the replacement as pretty strighforward) ?

    Thanks in advance.
     
  2. Avatar

    snack-media
    Advertisement


  3. jonny87

    jonny87 Registered User

    1,086
    4
    36
    if its the same as the s3 then no mate, but dont no for sure about the a3

    on s3 all i had to remove was the black metal bracket that holds the dipstick, but again im unsure if its the same setup on a3's
     
  4. rossbrownlee

    rossbrownlee Ross_S4

    719
    0
    16
    cadoc,
    perhaps your mechy means the alternator? I believe in some cases the alternator has to be unbolted and moved out the way?
     
  5. Westy

    Westy Registered User

    17,400
    1,106
    113
    It will be the alternator he's talking about. I didn't even need to unbolt the alternator but you might need to for the A3. There's a guide with pictures knocking about if you do a search.
     
  6. Welly

    Welly 335D Driver :-)

    10,699
    139
    63
    I did mine also and didn't need to unbolt the alternator. It's a abit of a fiddle I admit, but with a universal joint and some patience it's easy enough. Best advice I can give is to unbolt the bracket which holds the main wires to the alternator (right hand side by the thermo - easy to see when in there), this makes access 100 times easier. Wire can just be manipulated out of the way and you can see much much better and get sockets in that way...
     
  7. Imteyaz

    Imteyaz 6th Gear

    534
    7
    18
    I changed the thermostat on my A3 (1.8T) with the help of my dad without removing the alternator. It would have made the job easier to remove the alternator but it's not necessary.

    The job is a little fidlly and space is tight but not enough to warrant the removal of the alternator although it does help to remove a 8mm nut that is bolted to the rear of the alternator casing (it secures the alternator cabling) to allow for a little more space / movement. Removing the alternator would add more time to the job (time = money...). IIRC, the whole job took just over an hour to complete.
     
    Last edited: Nov 16, 2009
  8. Misto

    Misto Registered User

    21
    0
    1
    I just recently changed the thermostat on my tdi and I found a set of the hinged ratchet spanners (halfords professional half price!) to work a charm for loosening & tightening then a 1/4" drive ratchet, universal joint & rocker for the rest. Didn't need to move the alternator but I could see why some people might choose to.
     
  9. Welly

    Welly 335D Driver :-)

    10,699
    139
    63
    Sorry dude! Saw your edit! lol
     
  10. subby

    subby Registered User

    124
    0
    18
    Ive bought a new stat to change on my S3, but it didnt come with a new O-ring, which it should aparantly ? Did yours ?
     
  11. Ozzyb

    Ozzyb Registered User

    39
    0
    6
    Did this the other day and you dont need to remove the Alternator but it isd a bit tricky as one of the Bolts is akward to get to. but with the right tools i managed it. see the link below i used

    http://forums.audiworld.com/showthread.php?p=16925102

    I'm still having issues though and just added a thread for help!

    Hope it helps and solves your problem
     

Share This Page

Do Not Sell My Personal Information