| | No heat
I have had heat in the last week but when I need it it's not there. I have flushed the heater core twice and it did work for a few days. The engine heats up fine with a new thermostat.
I am wondering if it isn't the dial that goes from cool to hot on the interior control. Is there supposed to be a flap under the dash the moves and lets incoming air pass across the heater core? Any ideas how I can verify or see if this is the case? The defrost, floor , dash vents all work fine but with no heat.
Thank you in advance for any input.