Heater and a/c are not blowing cold or heated air

Sounds like a climate control system issue, perhaps in one part due to a temperature blending issue. If the motors that control the doors in the dash to mix hot and cold air are not working properly, then you will not be able to effectively regulate temperature. Hands on testing is needed to see what is happening with engine temperature, AC system operation, and temperature blending operation. www.repairpal.com/repair-shops