Mechanics

HEAT PROBLEM

2007 Chrysler Pacifica • 4.0L 2WD Automatic • 130,000 miles

When I warm my car up in the winter or we are sitting at a stop light my car only blows cold air why? The temp gage is fine and runs great just need heat to warm up the inside when it is -30 wind chill. Please please help thank you in advance..
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Just me and you
January 25, 2014.



You could have a restricted heater core, a stuck open thermostat, be low on coolant, or have a bad blend door motor or actuator. Does it blow heat at highway speed?Can you feel the air blowing?If you turn the control from hot to cold can you feel a temperature change in the air coming out. With the car sitting still fully warmed up try reving the car up in short quick burst, like vroom wait vroom wait for about 3 or 4 minutes and see if the air gets warm.

Homer1967
Jan 26, 2014.
It only blows cold when we are sitting at a stop light. When I give it gas it blows heat. I have also heard air in the line that it needs burped.

Tiny
Just me and you
Jan 26, 2014.
Yeah, I would suggest that you do a heater core flush and then a good bleeding of the system. The fact that the air is hot at higher rpm's is a very good indicater that there is a restriction in the heater core. Flush in in both direction and until it looks like pure water.

Homer1967
Jan 26, 2014.