heat doesnt work ,fan blows but heat doesnt come out . on 2002 Infiniti Q45

i replaced controll head , thermostat ,and flushed cooling system .

by in Decatur, GA on January 19, 2011
1 answer 2 comments
ANSWER by on January 19, 2011
do you mean no air flow or just cold air?? Roy
COMMENT by on January 19, 2011
just cold air
COMMENT by on January 19, 2011
check the temp of the inlet and out of the heater core. they should be around 170 in and 150 out. if not, the heater core may be clogged Roy