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  1. 03-25-2013 07:54 AM #1
    grmnmusl
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    Retired.. 00' B5 S4 Avant/04' Allroad/02' S6/MK4 GTi Stg 3/Couple B5 A4's
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    b5 thermostat housing broken....

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    Hey does anyone know if it is at all possible to change the thermostat housing cover on my S4 without pulling the timing belt?
    It was done recently .... Arrrrrrrr!
    ....Lightly modded A7!
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  2. 03-25-2013 08:06 AM #2
    Jsmooth65
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    uhh, it sits directly behind the timing belt. impossible.
    2004 Audi A4 Sedan, Auto, Black, 1.8T Beater
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  3. 03-25-2013 08:07 AM #3
    bps4
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    Quote Originally Posted by grmnmusl View Post
    Hey does anyone know if it is at all possible to change the thermostat housing cover on my S4 without pulling the timing belt?
    It was done recently .... Arrrrrrrr!
    no, that sucks, I had the same thing happen to me 5K miles after I did mine... stupid "updated" thermostat cover
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  4. 03-25-2013 08:08 AM #4
    wannabeS4
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    I've done it before, I used a zip tie to keep the belt on the cam pulley and pulled it partially off so I could pull the housing.
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  5. 03-25-2013 08:36 AM #5
    Monty23
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    Quote Originally Posted by wannabeS4 View Post
    I've done it before, I used a zip tie to keep the belt on the cam pulley and pulled it partially off so I could pull the housing.
    If you're that far in.... it takes like an extra 5 minutes to do it right by popping off the cam pulleys and such......
    Last edited by Monty23; 03-25-2013 at 08:56 AM.
    STK -> Compound Turbo Build Thread
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  6. 03-25-2013 08:55 AM #6
    034Motorsport
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    Make sure you take this opportunity to upgrade to the proper OEM metal unit. They will never distort or have issues in the future, and your exact reason is why we always recommend them.

    We carry them in stock, they are $145.
    034Motorsport - Engineering and Manufacturing Performance Hardware & Software Upgrades for Audi Enthusiasts Since 2005.

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  7. 03-25-2013 09:13 AM #7
    Jsmooth65
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    also, make sure that thermostat o-ring is in good shape. I've had a few aftermarket brand t-stat O-rings fail. Only the genuine audi one has ever not failed on me. I don't know why.
    2004 Audi A4 Sedan, Auto, Black, 1.8T Beater
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  8. 03-25-2013 10:47 AM #8
    alm001
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    I pulled the belt off the passenger side cam gear... but I had a cam lock bar to put it all back together. Putting the belt back on was a bitch.
    -Andrew
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  9. 03-29-2013 02:43 AM #9
    grmnmusl
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    I don't have the bar where the car is, it just seemed like there was some space. I
    will try to nudge the belt forward a bit.
    Not pulling the belt a 2nd time would make the change a snap. Doin it this morning.
    Will let you know my findings.
    ....Lightly modded A7!
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  10. 03-29-2013 04:14 AM #10
    FbOmRxD
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    You can do it, I did it maybe 2 months ago.

    Takes a little bit of finagaling to get it out over the crest of the Thermostat, but it is very possible.

    I put a metal one back in, I'd suggest doing the same. Solved my leaking problems.
    01.5 s4 avant...sport + winter packages + Stage 3 fun
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  12. 03-29-2013 06:27 PM #11
    grmnmusl
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    Yep your right did it today. You need to loosen the metal surround around PS Cam sprocket to give youa lil more room but with a twist of the belt and screwdriver or a friend.... Your in.
    Took lil over an hour start to finish. Sure beats pulling the belt...

    You know I threw in a new Stat and o-ring in there!
    ....Lightly modded A7!
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  13. 04-05-2013 05:14 AM #12
    Malv1
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    I have a silly question from an S4 noob... When you did this did you have the car in service position? Do you have to have it in service position to do the timing belt? I think my t-stat is stuck partially open since on cool mornings it doesn't really get up to operating temp on the gauge for quite some time. The needle swings from one notch about cold to normal and back down but never over normal.
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  14. 04-05-2013 03:47 PM #13
    Shhmaudi
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    I have a extra metal thermostat housing laying around
    Old: 1.8T Stg 3, Noggy stg 3, Silvaro tag 3 B5 |JHM Trans W/Carbon Syncros 4:1 diff|Tial 770|I.E Rods|Built 2.8 Heads W/ supertech RS4 intake, Y pipe, manifold etc...
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  15. 09-25-2014 06:14 PM #14
    durtschi
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    Are you willing to sell that metal thermostat housing?
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  16. 09-25-2014 06:31 PM #15
    Gearbox
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    I've sold a few of these. Cleaned by bead blasting. Looks almost new...

    Thermostat Housing upgrade FS
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