Heater Problems
The biggest complaint I get is no heat or intermittent heat. The number-one cause of this is air in the cooling system. Whenever someone comes to me with a heater problem, the first thing I check for is air in the cooling system. Here’s a video on how to purge the air from a cooling system.
Tools/Supplies For This Build:
Related Videos:
How To Bleed A Cooling System:
Pressure Testing Cooling Systems:
Solving ‘No Heat’ Problems:
If you purge the air from your cooling system and you get your heat back, don’t consider it fixed just yet. There might be a leak somewhere causing the air to enter the system. Here’s a video showing how you can find coolant leaks in your cooling system.
Once you’ve found and repaired the leaks, your heat should be restored and you can go on your way. Read the Overheating Problems article to get more detail about finding and repairing cooling system issues.
2 thoughts on “Heater Problems”
Mainor The bubble head
November 19, 2020 at 9:52 am
I have a 2004 Bonneville 3.8 L That had no heat in the cab. We replace the thermostat and it got a little warm. I saw your video on back flushing the heater core. What I want to know if when we do that if it does not work could you tell me the location of the heater control valve. Your videos are very helpful thank you
John
February 21, 2020 at 10:16 pm
I am in need of help…I am working on a 2011 focus SE it’s blowing cold out driver side and warm out pass side it does not have duel climate I’ve checked the actuators and they are working any ideas…your videos are really helpful when I’m lost or 2nd guessing myself.