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bradleyheathhays

Heater duct door switching problem

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Have an '02 Taurus w/ 103k miles and about 6 months ago all the air, heat or a/c, started blowing only out of the defrost vents at the bottom of the windshield. All the settings work correctly except air has stopped blowing from the floor and dash vents entirely. I know the fix on this is probably easy, just getting to it is gonna be hard. I've had the dash off my '11 Crown Vic to replace the leaking heater core so I've got a little experience doing this sort of thing.

Can any describe to me what switching door in the vent system has gone bad and how I might approach fixing it?

Thanks

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Thanks for the advice.  I have very little understanding of this so far but I thought 'blend' door referred to the temperature blend door.  My issue is primarily concerned with the door that controls the vents.

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I checked all the vac lines on the firewall from the vac source on the driver's side to where it goes into the cabin on the pass side and everything seemed ok.  So I get inside and take the glove compartment out and go poking around to see if I can find a loose vac line.  Well lo and behold, I did, and lucky enough nothing's broken. I found a loose junction of vac lines that resembles a wiring harness connection. Best guess is it got knocked loose when my aftermarket radio got installed last year. Couldn't find my radio removal tools (on order for next week) so I wasn't able to get as good a view as I wanted, but after a lot of squeezing under the dash to look I never found these lines connection point. Can anyone tell me exactly where these lines plug into?...

 

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It can be due to

1. Broken heater blower motor

2. Problem with thermostat

3. Failed heater blower

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20 minutes ago, BobbyWright said:

It can be due to

1. Broken heater blower motor

2. Problem with thermostat

3. Failed heater blower


Hey Bobby - are you in the Atlanta area by chance?

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