The heater on my 1994 ford Expedition AND 2004 Lexus LS blows cold air please help
1 Answer
Feel the heater hoses going to the heater core. If both are hot you probably have a blend door issue under the dash. If only one is hot and the other is cold or Luke warm you have a stopped up heater core. If both are cold or Luke warm you have a cooling system issue. Possibly low coolant or stuck thermostat. Also on some models there is a valve in the inlet hose to the heater core. Inspect this to make sure it is opening properly( that is if it applies to your models)