Ac vaccuum lines in firewall

[Bosley]

Guys I need help. 00 expedition 5.4 pulled grommet out of firewall for AC vacuum lines and lost lines running to engine bay. How do I find it?

 

[Bedrck47]

Welcome to the Forum

 

[Bosley]

Thanks

 

[Bedrck47]

That line connects to the vacuum reservoir located behind the battery it is mounted to the battery tray you may just have to loosen the battery hold down screw or you may need to lift the battery a little to get to it

 

[Bedrck47]

 

[Bedrck47]

Item Part Number Description 1 18A318 Vacuum control motor — panel/defrost door
2 18A478 Panel/defrost door (full vacuum position)
3 — Defrost airflow
4 — Side window demister airflow
5 18B545 Temperature blend door (full heat position)
6 19860 A/C evaporator core
7 19A813 Air inlet duct door (full vacuum position)
8 — Outside air inlet
9 18A318 Vacuum control motor — air inlet duct door
10 — Recirculated air inlet
11 19805 Blower motor
12 — Vacuum to emission control
13 — Vacuum from the engine intake manifold
14 19A563 A/C vacuum check valve
15 19A566 A/C vacuum reservoir tank and bracket
16 19980 Electronic automatic temperature control module
17 18476 Heater core
18 18A559 Floor/panel door (full vacuum position)
19 — Floor airflow
20 18A318 Vacuum control motor — floor/panel door
21 — Panel vent airflow

 

[Bosley]

The line feel behind dash. How can I access to push back through firewall

 

[Bedrck47]

Not sure. Use a mirror and flashlight to locate it and a pair of needle nose pliers Or you may try removing the glove box