anndwenger@hotmail.com

My husband changed timing belt,water pump,some engine cover gaskets and the thermostat in our 2000 A6 and everything woks fine except that now when the car is idling (temp.gauge is in the middle-warm), we get no warm air coming from the vents.Once the RPM are rewed up the heat stars coming.The system is filled with coolant and we have been bleeding the system as well.It seems like the middle of the car vents are blowing cold air even when the RPM-s are up.Anybody has any good ideas how to fix this next issue ,sure would be appreciated.Thanks Ann

SloopJohnB@mac.com

Classic air in the system. Keep bleeding it. Read the Bentley service manual and follow it.

x19

How about this way, Front driver side lift up with engine idling and watch coolant level in bottole, Most of time you have to top off coolant) Trapped air will come out. HTH. x19

5v/cyl

^^^What they said^^^^ My AR had the same problem. Took some doing, but eventually got the air bubble out and heat was great again.