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  #1  
Old 06-02-2007, 06:38 PM
 
Join Date: May 2007
Posts: 3
Default Heating-A/C vacuum system

does anyone know where I can find the interior schematics for the Heating and A/C vacuum system for my 2002 E350?
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  #2  
Old 06-02-2007, 07:14 PM
Hayapower's Avatar
Super Moderator
2005 Ford F-250
My Garage
 
Join Date: Jul 2006
Posts: 4,077
Default RE: Heating-A/C vacuum system

See if this helps
[IMG]local://upfiles/6756/A2761B4991214436827509A0A338F6F9.gif[/IMG]
Item
Part Number
Description
1

Vacuum to the auxiliary A/C system (if equipped)
2
18A318
Vacuum control motor — floor/panel door
3

Panel vent airflow
4

Floor/panel door (full vacuum position) (part of 18471)
5
18B545
Temperature blend door (full heat position)
6
19860
Evaporator core
7
19A813
Air inlet 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
18476
Heater core
13

Vacuum from the engine intake manifold
14
19A563
A/C vacuum check valve
15
19A566
A/C vacuum reservoir tank and bracket
16
19B888
Function selector switch
17

Floor air flow
18
18A318
Vacuum control motor — floor/defrost door
19

Floor/defrost door (full vacuum position) (part of 18471)
20

Defrost airflow



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  #3  
Old 08-22-2010, 11:24 PM
Junior Member
 
Join Date: Aug 2010
Posts: 1
Question Parts Location HVAC Vacuum Motor - defrost/plenum

Working on 1994 E150 HVAC.
WHERE is the Vacuum Motor located (how can I get to it to replace it) which controls the flow of air to the defrost vents vs the panel vents (plenum)?
This appears to be a common problem for several years and models: after several seconds of low vacuum (hard acceleration), the A/C system switches from cold air coming through the Panel vents, to hot air coming from the Defroster vents.
I think the part number is 18A318, but I have looked in two sets of manuals and cannot find the location (and what else to remove) of the Defrost/Plenum Vacuum Motor. HELP
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  #4  
Old 08-23-2010, 12:55 PM
Junior Member
 
Join Date: Oct 2009
Location: Saskatchewan
Posts: 23
Default

Working on 1994 E150 HVAC.
WHERE is the Vacuum Motor located (how can I get to it to replace it) which controls the flow of air to the defrost vents vs the panel vents (plenum)?
This appears to be a common problem for several years and models: after several seconds of low vacuum (hard acceleration), the A/C system switches from cold air coming through the Panel vents, to hot air coming from the Defroster vents.
I think the part number is 18A318, but I have looked in two sets of manuals and cannot find the location (and what else to remove) of the Defrost/Plenum Vacuum Motor. HELP

You should start your own thread.
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Old 08-23-2010, 12:55 PM
 
 
 
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