why does my heater blow cold air?i turn heat on i hear flapper open and close on 2001 Dodge Stratus

full on coolant too

Asked by for the 2001 Dodge Stratus
It could be many things, unfortunately and without experiencing the problem first hand or being able to do some basic diagnostic tests its hard to say. Autozone have some popular workshop manuals for free on line once you register (for free) on their website There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate
Alldata is going to be best for information and test procedures.