I have a 2008 Ford Edge. during the summer we had a mild anti-freeze smell if we turned the A/C temp up (warmer). We brought it to the dealer fearing that the heater core was going bad. They state that it tested ok. Since it was summer and so warm we did not really have an opportunity to test the heat.
Now that it is getting cooler we are finding that if the engine is warm and the heat is then turned on, it heats briefly then we pretty much get ambient air. Again we smelled some coolant odor,but again no evidence of leak.
We brought it back to the dealer, they pressure tested the system and declared it ok. My wife reported that it seemed better and assumed the pressure might have cleared a blockage.
This morning she drove to work and it was quite cool out. During her 45 minute ride she had the heat on, but no heat. The dealer wants me to bring it back again, With one car this will get expensive and very inconvenient, but then again we need heat.
I Googled heat problems and came up with someone saying check the cabin air filter.
In doing so I notice that when I change the heat mode selector, the blend door opens for a few seconds and then closes again. kind of consistent with the heat for a few seconds then ambient air.
I do not know the proper action of the door, ie: what should it do when, and what to look at if it is not working correctly.
Any help, suggestions or advice are welcome.
Thank you,
Scott
