Mechanics

HEATER ONLY BLOWS COLD AIR

2003 Dodge Ram

Heater problem
2003 Dodge Ram V8 Two Wheel Drive Automatic

heater will not work at all just cool or cold air comes out
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Fayesj
December 2, 2009.




First be sure the coolant level is normal.

If your temperature gauge is lower than normal, suspect a thermostat stuck open. If the gauge reads normal, feel the two heater hoses. After driving on the highway for 15 - 20 minutes, the hoses should be too hot to hold onto for very long. If they are cool, suspect a plugged heater core. They can usually be flushed out with a garden hose, but don't put more than 15 pounds of pressure on it. If the hoses are hot, suspect a problem with the actuator for the temperature door or its linkage, or the computer module that runs them. (We used to do this with cables and levers, not over-complicated, unreliable, unnecessary computers)!

Caradiodoc

Caradiodoc
Dec 3, 2009.


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