Question about 2003 Dodge Caravan
My 2003 dodge caravan heater will not send hot air when the knob is turned to warm. I changed the thermostat and yes it has plenty of antifreeze. The motor gets warm - like normal and the fans cut on and the waterpump is working. I changed an input switch for the transmission because it started switching to first prematurely as I slow down, which didn't help but I noticed it doesn't shift into first early if I drive in 3 and not overdrive. I have had 3 caravans and this is the 3rd one that has had tranny problems - I had to replace the transmissions on the first two. At least there consistent. I am afraid I might have bumped something while I had my hand wedged down there replacing the switch.
Check the hoses for any missing part, holes, etc.
If you do not find anything wrong in the air lines, then inspect connections to heater control module.
Posted on Oct 22, 2008
There shouldn't be anything down near the transmission that would affect your heat output. What I'm thinking is there is a possibility that the heater controls on the dash are malfunctioning, and when you select heat, for whatever reason the system isn't getting the signal to go warm. Would you be able to pull a heater control panel out of a salvage yard? If so, it shouldn't cost more than $10-12 and might be a worthwhile investment. If your controls are not sending the signal to have the air go warm, it'll continue to blow cool/cold.
You might also call a shop and see if they have the capability to scan the car for chassis failure codes, similar to what they do for the engine computer when you get a check-engine light - my Audi has this capability and I've seen it on other cars as well.
Posted on Oct 21, 2008
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Posted on Jan 02, 2017
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