Blower motor works intermittently

Hi there.

You could flush the heater core with a garden hose to be sure all the dirt and debris is out.

Also, replace the thermostat to be sure the engine is up to temperature. That will help.

https://www.2carpros.com/articles/replace-thermostat

Roy

As a point of interest, I have a friend with a diesel truck that has been developing less and less hot air over the years, and flushing the heater core didn't help. A few weeks ago he flushed it with toilet bowl cleaner costing about two bucks a bottle. He was amazed. The heater works as well as when the truck was new, and he's getting burned out now, even when it's below zero outside.

Happy holidays!

Roy

Thank you.

Roy