Heater blowing cold air

[DaveS]

Hey Guys,
im gonna keep this short.

heater blows cold air when set to warm

hoses to cabin are warm.
blower is working.

what gives?
where do i begin looking?

 

[Alaskan_TA]

Is the coolant full?

This is common when the level is low, air bubble in the system, etc.

 

[DaveS]

coolant is topped off

 

[monook]

Maybe the cable came off on the hot/cold control? Move it back and forth to hear if the flapper door is moving?

 

[Dana67Dart]

Is the return line to the water pump hot / flowing

 

[Murray]

Hot water is flowing through your heater core at all times, unless your system has an inline heater control valve. By flipping your lever to warm, you are opening a door to allow the warm air into the car. It would seem your door is not opening.

 

[Demonic]

Sometimes the hose temp can fool you - little to zero flow with a semi-clogged core, but everything warms up eventually. Disconnect the hoses at the engine, blow it alternately in both directions w a garden hose.

 

[383Scampman]

x2 with Demonic

 

[DaveS]

i will blow out with garden hose.

will update!

 

[67Dart273]

Make sure to blow it OPPOSITE from engine flow, I had trouble with my Dakota, which has VERY small passages in the core. Chrysler should be sued for the design of the damn thing.