so it was below zero tonight and i found my well functioning heater blowing barely warm air, the car was on for atleast 40 min and it was still blowing barely warm air. is there anything i can do to make blow hot air? i mean the heater work absolutely fine and blow really hot air when it warmer out i guess it just cant handle really cold temps

any help?

 

all i can think of is to make sure your coolant is full.

 

yea its the first thing i checked too it was full , and ran out of ideas. i think imma just put a piece of cardboard infront of the radiator covering half of it . thatll definately give me warm air.
use to do the same with my dads antiques lol