Whats up everyone,
I have been getting no heat in my 2000 B5 S4. It sucks. I have done a full heater core flush, changed the coolant temperature sensor and flushed the entire cooling system.
Both of my inlet and outlet hoses are getting very warm so there is flow from the heater core.
I dont know where to go from here....Suggestions???
Thanks Everyone.

 

Play with this http://www.audiworld.com/tech/int6.shtml or vcds and make sure all your temp sensors look like they are reading properly.

 

All my temps look good... i went to a friend of mine and he said that it is probably something in the hvac unit. that meaning maybe the climate control motor isnt switching cold to hot. should i replace the climate control unit?? what does everyone think??

 

i am having the same problem with my 2000 A4. i have it set to high and
i get warm air if that enough to defrost the window is about it.
i just noticed it today.

 

I had the same issue with mine as well, but found the solution. The heater core ends up trapping all the sediment and crap the engine makes and clove the bottom of the heater core. Both hoses will be hot because on the top of the core circulates..I went to a radiator shop in my town and they hooked up the core to a pressure washing unit and blew out all the crap in the core, and its worked perfectly since.

 

Just curious what are you flushing the heater cores out with. I find the best is the CLR Calcium Lime Rust found at most hardware stores.

If that does not work & the heat blend door is operating properly it might be time for a new heater core.