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

Anyone changed the heater matrix themselves?

Discussion in 'A3/S3 Forum (8L Chassis)' started by Westy, May 9, 2011.

  1. Westy

    Westy Well-Known Member

    Joined:
    Dec 2, 2008
    Messages:
    17,437
    Likes Received:
    1,069
    Any guides kicking about, any tips?
     
  2. Advert Guest Advertisement


  3. Sandip

    Sandip Well-Known Member

    Joined:
    Nov 7, 2006
    Messages:
    2,435
    Likes Received:
    86
    Oh dear, is it leaking Westle :(
     
  4. quattro1

    quattro1 Member

    Joined:
    Jul 19, 2010
    Messages:
    640
    Likes Received:
    7
    it looks like an absolute biiaaatch of a job mate! i had a good look at it when i had my dash out to replace my heater fan, definately not a job id choose do to!!
     
  5. Westy

    Westy Well-Known Member

    Joined:
    Dec 2, 2008
    Messages:
    17,437
    Likes Received:
    1,069
    The smell is getting worse and I can only assume it's the matrix :(

    If nobody recomends doing it it'll be done by my trusty mech when he does my turb in 3 weeks time.
     
  6. S3 TAM

    S3 TAM Pocket now empty

    Joined:
    Oct 20, 2009
    Messages:
    624
    Likes Received:
    10
    I reckon a late night mechs sessions with elsawin.

    plus a couple of beers sorted.

    save the labour charge and spend on mods. - I think thats good advise lol.
     
  7. Westy

    Westy Well-Known Member

    Joined:
    Dec 2, 2008
    Messages:
    17,437
    Likes Received:
    1,069
    Well this is what I was thinking mate as we've got nothing to do till the 2nd week of June :(
     
  8. Sandip

    Sandip Well-Known Member

    Joined:
    Nov 7, 2006
    Messages:
    2,435
    Likes Received:
    86
    That's going to be one heck of a late night session lol
     
  9. S3 TAM

    S3 TAM Pocket now empty

    Joined:
    Oct 20, 2009
    Messages:
    624
    Likes Received:
    10
    worst case i'll drive you into work till we get it done. lol
     
  10. Westy

    Westy Well-Known Member

    Joined:
    Dec 2, 2008
    Messages:
    17,437
    Likes Received:
    1,069
    Friday into Saturday. Tunes pumping, couple of beers and strong coffees. It's what Friday nights are all about ;)
     
  11. Westy

    Westy Well-Known Member

    Joined:
    Dec 2, 2008
    Messages:
    17,437
    Likes Received:
    1,069
    Dude i'm on my bike, there's no worries :beerchug:
     
  12. S3 TAM

    S3 TAM Pocket now empty

    Joined:
    Oct 20, 2009
    Messages:
    624
    Likes Received:
    10
    Hell Yeah

    Better than spending £80+ down the drain.
     
  13. Syvo

    Syvo IF IN DOUBT GO FLAT OUT

    Joined:
    Jan 20, 2011
    Messages:
    1,338
    Likes Received:
    22
    owch nice job to-do wouldnt even hazard a guess when u say it smells nothing to do with the atmosheric catch can you got going on affecting the pollen filter? its a long shot but thought i would ask it
     
  14. S3 TAM

    S3 TAM Pocket now empty

    Joined:
    Oct 20, 2009
    Messages:
    624
    Likes Received:
    10
    I can see we are both as busy as each other. lol
     
  15. Westy

    Westy Well-Known Member

    Joined:
    Dec 2, 2008
    Messages:
    17,437
    Likes Received:
    1,069
    Nah I've had this smell for a long time and it smells nothing like the fuel smell you get from the catch can. It's more of a sweet spicey smell which I'm guessing is a mixture of stagnant water and coolant. You can only smell it when the heater unit is turned on which all points towards the heater matrix if you ask me.
     
  16. Westy

    Westy Well-Known Member

    Joined:
    Dec 2, 2008
    Messages:
    17,437
    Likes Received:
    1,069
    shhhhhh
     
  17. Westy

    Westy Well-Known Member

    Joined:
    Dec 2, 2008
    Messages:
    17,437
    Likes Received:
    1,069
  18. <tuffty/>

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

    Joined:
    Sep 14, 2008
    Messages:
    19,729
    Likes Received:
    3,147
    Ooooooooo.... that brings back memories of doing the heater matrix in my A4.... a thankless task...

    Just had a quick look in my A3 Haynes manual (yes, I have one!) and it looks a similar job... dash off before you can get to the heater unit... disappointing...

    You will need to get your aircon degassed prior to the job (thats how I did my A4 at least) then regassed after... I also discovered the aircon condensor needed replacing too as it had a leak...

    According to the Haynes manual, you also have to modify the dash panel support to get the heater unit out... involves drilling out a couple of spot welds then cutting part way through... there is a reinforcing plate behind that you don't cut through as this is what you will be bolting it back together with..

    Crappy phone pic of Haynes...

    [​IMG]

    Drill out 'A' with a 7mm drill and cut carefully through the 'dashed' line underneath but not through the plate at the back is how I read it..

    <tuffty/>
     
  19. Westy

    Westy Well-Known Member

    Joined:
    Dec 2, 2008
    Messages:
    17,437
    Likes Received:
    1,069
    Tuffty what's happened to your name?

    Oh and I think I'll give this job a miss! I'll see what my mechanic says.
     
  20. quattro1

    quattro1 Member

    Joined:
    Jul 19, 2010
    Messages:
    640
    Likes Received:
    7
    sod that!!! lol
     
  21. <tuffty/>

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

    Joined:
    Sep 14, 2008
    Messages:
    19,729
    Likes Received:
    3,147
    You are not wrong... was an long winded job!! My A4 went from this..

    [​IMG]

    to this...
    [​IMG]

    Fun it was not but feck knows how much a dealer would have charged!!

    Neil, the symptoms on my A4 were condensation on the inside of the windows whilst the heater was on and a sweet sickly smell of coolant... if yours has gone I wouldn't advise driving too far with it as it will make you ill... mine was like it for a month before I got around to doing it... I never felt so 'well' afterwards... G12 is not nice stuff..

    <tuffty/>
     
  22. Advert Guest Advertisement



    to hide this advert.
  23. quattro1

    quattro1 Member

    Joined:
    Jul 19, 2010
    Messages:
    640
    Likes Received:
    7
    jesus that looks like a complete ballache lol, fair play to you for having the drive to get it done! dont think i could do it!
     
  24. <tuffty/>

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

    Joined:
    Sep 14, 2008
    Messages:
    19,729
    Likes Received:
    3,147
    It was but the motivation was purely financial... as was when I did the cam belt on her..
    [​IMG]

    Fairly std process on longitudal VAGs to remove the front though to do 'anything'....

    <tuffty/>
     
  25. A3Tom

    A3Tom Smell my finger.

    Joined:
    Mar 3, 2009
    Messages:
    3,506
    Likes Received:
    13
    Heater matrix?.........................rather you than me!
     
  26. quattro1

    quattro1 Member

    Joined:
    Jul 19, 2010
    Messages:
    640
    Likes Received:
    7
    omg tuft lol, that looks unreal. i bet that would cost an absolute friggin fortune in labour!!!!!!!!!!!!!!!!
     
  27. Westy

    Westy Well-Known Member

    Joined:
    Dec 2, 2008
    Messages:
    17,437
    Likes Received:
    1,069
    Paul I've been driving round like it for nearly a year and it's been getting worse and worse. I've got the heater off at the moment. No condensation but it smells like spicy celary! That's the only way I can describe it!
     
  28. Westy

    Westy Well-Known Member

    Joined:
    Dec 2, 2008
    Messages:
    17,437
    Likes Received:
    1,069
    Thought I'd revive this thread as the mornings are starting to get cold and I really need to get it sorted.

    I got a quote from my usual audi mechanic who quoted me around £300 for the heater matrix to be changed due to the amount of time it takes. £300 is not an option because I refuse to pay that amount just to be warm, so I'll have a crack at it myself.

    The smell that comes through is definitely coolant as it smells exactly the same as when you stick your nose inside the header tank but it's stronger when heated and in the car.

    I did the old heater on full blast with AC on and pointing at the windscreen to see if there was any moisture that would show a leaky heater matrix. Not a bean, nothing on the screen at all!

    My mechanic said that he's never had to change an S3s heater matrix so I assume it's quite rare that they go! I'm wondering what else it could be but It looks like i'll need to strip out the dash and investigate the heater matrix before I find out. I'll keep you updated.
     
  29. Westy

    Westy Well-Known Member

    Joined:
    Dec 2, 2008
    Messages:
    17,437
    Likes Received:
    1,069
    Ok guys I need your help!

    I'm getting together all the needed parts this week ready to tackle this job next week.

    I need a list of parts to do the job including any bespoke tools and gaskets etc. Please add to my list:

    - Heater Matrix (obviously)
    - Coolant
    - Steering Wheel removal tool
     
  30. Danio

    Danio AUDI-MANIACS.COM

    Joined:
    Aug 5, 2011
    Messages:
    214
    Likes Received:
    22
    Torx and Hex tools
    Some pliers
    Spanner no.17 or 19 don't remember
    some spare time
    and obviously couple of beers:) lol
     
  31. Westy

    Westy Well-Known Member

    Joined:
    Dec 2, 2008
    Messages:
    17,437
    Likes Received:
    1,069
    Have you done this before Danio?

    Can I de-gas the AC myself or is it best to just go to my local garage?
     
  32. Danio

    Danio AUDI-MANIACS.COM

    Joined:
    Aug 5, 2011
    Messages:
    214
    Likes Received:
    22
    Yes I've done it before on my A3 when I was fitting air con.

    Yes you can de-gas AC yourself if you know how to. I went to Halfords to do it as I had voucher.
    Obviously it is not hard to do it but you have no guaranties that all system is tight so maybe better is to go to garage and re-gas it.
     
  33. Westy

    Westy Well-Known Member

    Joined:
    Dec 2, 2008
    Messages:
    17,437
    Likes Received:
    1,069
    Will definitely get it regassed at a garage but was thinking about de-gassing it myself if it's not too difficult?
     
  34. ScottD3

    ScottD3 I want your faulty electronics
    Supporter

    Joined:
    Nov 24, 2010
    Messages:
    15,243
    Likes Received:
    1,101
    Good lucky westy.
    Mine is starting to smell.
    But it has to wait a couple of months before I tackle it. I need to get my electronic bits sorted out.

    Can't wait for the post. :)
     
  35. Danio

    Danio AUDI-MANIACS.COM

    Joined:
    Aug 5, 2011
    Messages:
    214
    Likes Received:
    22
    No just open both valves one near radiator and the second one behind maf sensor.
     
  36. ScottD3

    ScottD3 I want your faulty electronics
    Supporter

    Joined:
    Nov 24, 2010
    Messages:
    15,243
    Likes Received:
    1,101
    Thats bad for the environment, bad for your health and illegal.
    Give it to a registered garage.
    If you talk to them nicely, they might empty it for free if you go back or pay to empty but free refill.
     
  37. a3tdi2001

    a3tdi2001 Member

    Joined:
    Jan 19, 2010
    Messages:
    437
    Likes Received:
    11
    Always wondered how many heater matrixes rot from the inside out due to not having the coolant changed. Say a car is coming on ten years old, then how much corrosion inhibitor is going to be left in the original coolant?
     
  38. ScottD3

    ScottD3 I want your faulty electronics
    Supporter

    Joined:
    Nov 24, 2010
    Messages:
    15,243
    Likes Received:
    1,101
    Not alot in the original coolant but it should be changed. I can't remember when it should be changed it should deffo be changed.
    I think its part of the service schedule.

    People run water, the wrong mixture of coolant or the wrong coolant does not help.
    If it corrodes a heater matrix, just think what it is doing to the rest of the coolant system. :|
     
  39. a3tdi2001

    a3tdi2001 Member

    Joined:
    Jan 19, 2010
    Messages:
    437
    Likes Received:
    11
    I thought that the coolant was for life according to Audi. Oh well.
    Don't like the new G++. They've gone back to using silicates which I'm not so sure about, especially for water pump seals. Time will tell all I guess.
     
    #37 a3tdi2001, Oct 10, 2011
    Last edited: Oct 10, 2011
  40. Danio

    Danio AUDI-MANIACS.COM

    Joined:
    Aug 5, 2011
    Messages:
    214
    Likes Received:
    22
    Scott never heard about it that is illegal or bad to environment.
    I thought that gas has got no smell, at least I never smell anything.
    And next thing what if your system is not tight (you don't know about it) and all gas going to atmosphere?? Is that mean everyone will be sick??
     
  41. ScottD3

    ScottD3 I want your faulty electronics
    Supporter

    Joined:
    Nov 24, 2010
    Messages:
    15,243
    Likes Received:
    1,101
    I take it back.
    The old R12 gas is what was harmful, the new R134A is not. Still, I would not trust it as its under pressure.

    It might not be illegal for joe public, I know garages has to dispose of it properly.
     
  42. SiGainey

    SiGainey Member

    Joined:
    Sep 29, 2003
    Messages:
    488
    Likes Received:
    4
    Found an official audi doc which shows you how to remove the dash if you want it fella. PM me your email address if you do :)
     

Share This Page