2004 Audi a4 3.0 quattro need to know where the thermostat is..and how to replace it..also wastes gas..a lot..my son bought it from a private party

Asked by Nov 21, 2015 at 10:20 PM about the 2004 Audi A4 3.0 quattro Sedan AWD

Question type: Maintenance & Repair

Looked cannot find videos on how to
replace a thermostat.for 2004 Audi a4 3.0

7 Answers


This is where the thermostat housing is,front side,between the heads,


Follow the top hose on the radiator to the t-stat housing.

Thank you ..but is other a video that y'all may have..shows step by step...to get started? Thanks.


Woah! hold your horses caballera- you got in deep just buying this complicated piece of Teutonic Trouble- don't make things worse by messing around under the hood when you don't know what you're doin'- the best course is to get rid of it, fast- but if you insist on keeping it, find a GOOD Audi mechanic- oh, please, just get rid of it-


lol jam. Audis are not so bad once you got a good mechanic. I do all the work on mine myself unless it requires a hoist. So what you need to know... Replacing the thermostat is a big job, it is often done during a timing belt change along side the water pump, pulleys and tenser. This at audi is a 1500$ job but at a skilled audi/vw specialist some where more in the ball park of 1000$. if you only just bought the car and have no idea how long ago the timing belt was changed i would recommend going back to the person you bought it from and ask. If they do not know just do the whole kit to save headache down the road. i would also have all the pvc checked for the crank case breathers. more often then not one of the pvc tubes disintigarates on the 3.0L engines and causes the car to stop running or idle badly.

1 of 1 people found this helpful.

https://www.youtube.com/watch?v=ppxIcWZtE7w and this video has the termo stat in it or at least it should


Pelican parts have a good guide on how to do this job with photos if your handy around cars. might help??

Your Answer


Looking for a Used A4 in your area?

CarGurus has 12,429 nationwide A4 listings starting at $1,500.


Audi A4 Experts

  • #1
  • #2
    Tom Demyan
  • #3
View All

Related Models For Sale

Used BMW 3 Series
963 Great Deals out of 33,201 listings starting at $1,000
Used Audi A6
132 Great Deals out of 7,779 listings starting at $2,200
Used Audi S4
24 Great Deals out of 1,542 listings starting at $3,850
Used Audi A3
107 Great Deals out of 6,418 listings starting at $3,400
Used Mercedes-Benz C-Class
584 Great Deals out of 25,555 listings starting at $1,950
Used Honda Accord
540 Great Deals out of 94,361 listings starting at $1,300
Used BMW 5 Series
401 Great Deals out of 16,252 listings starting at $1,650
Used Ford Mustang
291 Great Deals out of 38,369 listings starting at $1,995
Used Audi A8
42 Great Deals out of 1,450 listings starting at $3,499
Used Mercedes-Benz E-Class
440 Great Deals out of 20,659 listings starting at $1,999
Used Honda Civic
347 Great Deals out of 52,617 listings starting at $1,200

Used Cars For Sale

2018 Audi A4 For Sale
5 Great Deals out of 6,323 listings starting at $28,691
2017 Audi A4 For Sale
33 Great Deals out of 865 listings starting at $18,995
2016 Audi A4 For Sale
13 Great Deals out of 207 listings starting at $17,220
2015 Audi A4 For Sale
33 Great Deals out of 984 listings starting at $14,499
2014 Audi A4 For Sale
16 Great Deals out of 673 listings starting at $13,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.