I have a 2000 Dodge Ram extended cab 4X4 and the heater all the sudden stop blow hot air. I was sitting in a drive through waiting for my food when heater stopped blowing hot air. It was as if I had changed the temper gage to from hot to cold. Now it just stays cold. Has anybody had this problem and if so how did you fix it?
Heater stopped blowing warm air.
- Thread starter ear77
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JRG18
Senior Member
YouTube search how to flush a heater core. There are kits to attach a hose to the engine side firewall and flush it out. You might have a clog of some kind or it could let you know if it's time to replace it.
Yeret
The Village Drunk
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Check your coolant level. I've got a Mountaineer with a terrible coolant leak from the water pump and when the coolant is full, the heat works awesome. After a few miles of driving however, the hot air briskly transitions to cold air as about half a gallon of coolant has leaked by that point.
dapepper9
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- 5.9L V8
Also if the blend doors fail you may not have heat. Operate the hot/cold selector a few times with only the key on and listen for a slight buzz in the dash
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