2005 Navi - heat and A/C blows from ALL vents

[MichiganMan]

Hey all, having a issue with my 2005 Navi. The heat blows hot, the A/C blows cold, but it all comes out of all the vents - defroster, dash vents, and floor, no matter what the auto climate is set to. I'm assuming there is a widget that directs the air to one vent or another, but I have no idea where to start with this one.

Any help is appreciated!

 

[bedrck46]

1 18A318 Vacuum control motor — floor/defrost door
2 — Defrost air flow
3 18A478 Floor/defrost door
4 18476 Heater core
5 19860 Evaporator core
6 19805 Blower motor
7 — Outside air inlet
8 19A813 Air inlet door
9 18A318 Vacuum control motor — air inlet door
10 — Recirculated air inlet
11 18B545 Temperature blend door
12 18A559 Panel door
13 — Panel air flow
14 18A318 Vacuum control motor — panel door
15 — Floor air flow
16 — Vacuum from the engine intake manifold
17 19A563 A/C vacuum check valve
18 19A566 Vacuum reservoir tank and bracket
19 19A563 A/C vacuum check valve
20 19B888 ATC solenoid and manifold
21 18495 Heater control valve

Port Hose Color Function
0 Black Vacuum Source
1 Blue Floor/Defrost Door
2 Yellow Floor/Defrost Door
3 Red Panel Door
4 Orange Panel Door
5 White Air Inlet Duct Door
6 Gray Heater Control Valve

 

[bedrck46]

The doors that divert the airflow are vacuum operated It could be possible that there is a vacuum hose that is leaking or has come disconnected Check item 20 on the print

 

[bedrck46]

Sent you a PM

 

[MichiganMan]

Thanks, I'll have to take a look once Michigan decides to stop imitating the freaking North Pole...

 

[bedrck46]

OK Michigan has the north pole It feels like the South pole here in PA Its been an extremely cold spell all over

 

[bedrck46]

check fuse #13 in the fuse block

 

[MichiganMan]

Haven't gotten to this yet, but thanks for all the suggestions and help. The POS decided to throw misfire codes on #7 & 8 the other day, so I'm sure I'm going to be replacing COPS.

I swear this truck was built on a Monday....