By Mike Allen / The Bulletin
April 27, 2008
Dear Mike: I have a 1999 Audi A6 Quattro with 112,000 miles. The heater blows cold at idle, but blows hot when I have my foot on the gas.
The coolant reservoir is full, the fans are working, there are no signs of leaks, the dashboard gauge reads normal and the water pump and thermostat....