Quote:
Originally Posted by Chris333
How can you know for sure that the blend door is bad?
I have low heat the last 2 years, but never had foam blow out of my vents. I just flushed my coolant and the heat is still low. I'd hate to spend all day tearing my dash out just to find the door is intact.
Is there a way to check it first?
BTW my cable clips are fine.
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It is not really the "blend door"; the blend door is wrapped with foam and that foam dries out and start to flake off. So at some point it blows out through the vent.
There are two other possibilities; the snap bushing and/or the defrost/heater cable attachments. These can be checked without taking the dash apart.
In the first post on this thread is the thread link for checking the cable.
Regarding the snap bushing if the cable moves you should hear the doors move, if not the snap bushing may be broken; that is what connects the door lever to the door.