Hello everyone. I was just changing my coolant to prepare the car for winter storage. I got the coolant drained and added the new coolant and began the "burping" process. I had the front of the car jacked up and the heat in the car on full blast. The car got up to normal temp and the fan kicked on, but no matter what I did I couldn't get the car to blow any hot air. I was squeezing the hoses for both the engine and heater core to try to loosen up any air, but I still could not get the air to blow hot.

Do you have any ideas of what this could be and how to fix it? I had hot air before draining the old coolant.

Car is a 1999 Miata by the way.

Thanks

 

Sounds like the "coolant flush" pushed some **** into the lines or core. I would pull both lines and hook a water hose to one of them and flush it out.