still need the answer as to why cold air blows thru heat vents anbd cold air blo

Check this one's "questions asked" out. Think we have tried to help out on many issues with no luck. just saying.

Agree. Just like some others huh.

Yeah.

I won't dignify that with a reply!

Sorry for all the questions but when i took the crown vic to a local garage the mechanis spent about 60 seconds under dash and the ac starting blowing thru ac vents but so does thye heat. I took it back he reversed whatever he did and the heat starting blowing for heat vents. He says it will take @ $700.00 to fix, if he can switch the air flow that fast what is the real problem. I am on disability this is my 81 yo mom,s car and she can not afford $700.00 seems if he can reverse the flow that fast it should be a less expensive fix..please help, she really needs the help. Thanks in advance..

The only thing I've seen that cost that much, even 700 ( new hear box ) seems steep is on the older F,L,M models where the air mix door hinge, that is just plastic breaks and then it can't switch. I've cut the box open to gain access and made looped wired hinges and then sealed the box back up