1997 Ford Aerostar 6 cyl Two Wheel Drive Automatic 86000 miles
Only mild heat from front and rear heaters when fan set to low. Air goes cold on higher fan speeds. Replaced water pump and thermostat last night. Same as before. Controls seem to work normally. Fresh coolant. Well maintained van. Could bad heater bypass valve affect both front and rear systems?Could too much cold outdoor air be entering somewhere?It's cold here in Chicago!
Friday, January 8th, 2010 AT 6:24 PM