How to Diagnose Fix a Vehicle That Doesnt Have Heat

1. step 1 :Diagnosing the Heating Issue 0:33

   • Wait for the engine to cool
   • Remove the coolant reservoir cap
   • Check the coolant level and top off the coolant if needed
   • Check the heater pipes entering the firewall
   • If the heater pipes are cold, the water pump could be malfunctioning or the heater core could be plugged
   • Let the engine run for 10-15 minutes
   • If the temp doesn't reach near 210 degrees, the issue could be the thermostat or coolant fan
   • Turn the blower to the max setting
   • Open the vents and test the air flow, alternating between heat and a/c

Tools needed

• Gloves

  Flashlight