What is your question?
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What is your question?
In the car is only hot air blowing. I changed the termostat.After I started the engine,it started blowing normal cold air. After I stopped and started the engine again,it begun blowing hot air again. Where is the problem?Which part do I need to replace?

1 Reply
The heater-A/C system is fairly complex, with a computer, sensors and electric motors that control the airflow and temperature of the air into the passenger compartment. Diagnosing problems with these systems is not trivial, it requires special equipment, training and information to be able to accurately address this. In other words, take it to a repair shop that regularly works on this type of vehicle.