I have a 2003 Honda Civic of 4 door. Recently my ac and heat went out at the same time. What can I check to be able to fix myself. ?
AC and Heat are two completely separate systems. Are you referring to the blower motor that is not working?
check the coolant level , then if just mild heat reading on the gauge, the thermostat, then heater core if both in and out hoses are not hot at the same time showing flow through in and out
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