dunk56

I have a 2000 A-6 2.7T. My wife says this problem has always been with the car. The problem is that the engine heats up to the exact middle of the gauge. We set heat on automatic or manual high fan and the car will heat if driving. Problem is at idle. At idle it will blow cold air. I start the car a 1/2 hour before we are ready to leave. The engine and everything is ready to go but no heat until rpm's are above 2K. Even at stop lights the heat stops until we move to get rpms up. Plenty of antifreeze. The idea is you cannot start the car and let it warm up. It will stay cold until you hit the gas. I cannot believe it's a water pump as it has always been this way.

SwimmerTy

or an angry wife hahaha.

(flame suit on)

Rocky-in-Connecticut

if you pull the heater hoses out to the bleed hole see if any air comes out. Else it does sound like a water pump problem.

..Vag Com can also tell you if any fault codes are stored in the Climate system. Perhaps a motor flap is stuck.

dunk56

NO deep pockets and no understanding wife. She just took my 4runner and said I could have it back it the spring. Been doing some research. What is an AUX. water pump? I don't know if I am saying it right but I will try again. Everything is normal with car as far as heating up. It just blows cold air until rpms are brought up. No RPM's no heat.

LuvnhatemyA6

To stop water circulation when cold is selected? A lot of cars do. Could not be opening properly.

Rocky-in-Connecticut

the block of course. There is no valve in the heater core. But the heater core could be blocked or restricted. -epecially if you have anything other than G12+ in the system.

FMB CAD

My current 2001 a6 is my 4th audi and they all were reluctant to get "comfortable warm" at idle. I have a remote start system installed, and in cold weather start it up about 10 minutes before having to leave. While the interior is not "ice cold" it's not up to the 70 dialed in on the climate control. But after a few minutes of driving it warms up quickly. When I manually start the car, eg. when I am out shoveling snow, I make sure to turn on the defroster, then the interior heats up well. I was told years ago, upon first complaining, that the thermostat is set to allow the engine to come up to operating temperature as quickly as possible and to maintain that heat. (best possible gas milage figures) And that in German Engineering, operating effeciency superceeds "girlly comforts" like a warm cabin.
Seriously, do other A6's get warm after 10 minutes of idle at 20F or below? Maybe mine is an oddball.

BernieBenz

only throttling flow thru the radiater. And that G12+ comment is BS!

LuvnhatemyA6

So is there a valve in the heater?

dunk56

To further explain,, I could literally start my a-6 in 30 degree weather, with the heater set to automatic or manual and 80 degrees and leave it run for hours. It would never warm up until I got in the car and stepped on gas pedal. If I bring the idel up to 1500 to 2000 rpm the heat comes on immediately. Does that make sence??