Heater has decided to blow cold air only

Sounds like some obstruction has gotten into the heater core or the hoses that go to it.

I have The same problem with my 93 Grand Caravan. I have replaced all of the hoses the only thing left is the heater core. I even replaced the water pump, thermostat and lubricated the vacuum valve that is online with the heater hose. You may want to check that valve to make sure that it is working properly. Not sure what year your van is, but this valve should be near the firewall online with the heater hose. Make note of the position that the lever on the valve with the heat set to cold. Then move the temp selector to hot and see if the valve opens or changes. You have to have the engine running while you do this because this valve is vacuum operated. You may just have a faulty valve. Or as someone else has already suggested a clogged heater core or hose. I hope this helps to solve your problem. Good luck!

Hi Jonathan it was the water pump. We had been having to top up the antifreeze but couldn't find a leak. Finally afer letting it run, parked in a snowy driveway, we found the leak. It didn't show up when we were driving. Thanks for your help

Hey, that is a lot of good information. This van is a 2002. Anyway, found the problem, it was the water pump. thanks for your help

Your heater core is plugged off, if you go under the hood and reverse the hoses it should clear up for awhile, but you need a new core

I have the same problem and have filed a lemon law suit since it is a 2013 and they have no fix as written to me in an email from Chrysler

are the ac light and the receurculate lights flashing if so try re calibrating it first there is a video on you tube its hvac calibration 96-2000 mini vans

Strange but true,do not turn your fan motor on high for the first 10 minutes-Dodge Tech.

I have the same problem, NO HEAT. Found the shaft to the heater flap was broken, so the flap stayed closed with all other indications being normal.

Thanks Tsban. Your solution was so simple and worked! "Strange but true,do not turn your fan motor on high for the first 10 minutes-Dodge Tech."

So my 2006 Dodge caravan all my levels are fine I'm it's just decided now just to blow cold air sometimes heat if I drive fast but other than that yeah I have no heat please help

2019 dodge van heater won’t work heat in back not front

I have a 2000 Dodge Caravan but it's only blowing cold air out what could be the problem

I have a 2013 front passenger heater control where the heat works only apparently some kind of flapper is jammed can someone tell me what flapper is jammed ? Peter A

Sorry that's 2013 Dodge Grand Caravan Peter A

I have a 2009 dodge caravan and the heat will work for a couple of minutes and then slowly go to cold. Back does not blow heat at all only cool air and coolant is filled. I have to play with the controls by turning to defrost and then back to the vent for it to go hot again. Any suggestions what could be wrong?