• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

problems with interior vents

  • Thread starter Thread starter rockyracoon
  • Start date Start date Jul 1, 2009
R

rockyracoon

10 Year Member
Nov 23, 2005
874
27
49
margate NJ
Jul 1, 2009
#1
  • Jul 1, 2009
  • #1
there is a vacuum line broken somewhere in the dash,I can run another one without taking the dash apart,however how would that be effected when im not making vacuum is there some kind of vacuum ball that holds vacuum located in the dash somewhere?

I was thinking of running a new vacuum line with a check valve,but I still think the vents will switch back when im not making vacuum.
 

jrichker

StangNet's favorite TOOL
In Remembrance. Thank you for your contributions
Mar 10, 2000
27,512
2,813
234
Dublin GA
Jul 1, 2009
#2
  • Jul 1, 2009
  • #2
Diagrams courtesy of Tmoss & Stang&2birds


See the following website for some help from Tmoss (diagram designer) & Stang&2Birds
(website host) for help on 86-95 5.0 Mustang wiring Mustang FAQ - Engine Information Everyone should bookmark this site.


Ignition switch wiring
http://www.veryuseful.com/mustang/tech/engine/images/IgnitionSwitchWiring.gif

Fuel, alternator, A/C and ignition wiring
http://www.veryuseful.com/mustang/tech/engine/images/fuel-alt-links-ign-ac.gif

Complete computer, actuator & sensor wiring diagram for 88-91 5.0 Mass Air Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/88-91_5.0_EEC_Wiring_Diagram.gif

Complete computer, actuator & sensor wiring diagram for 91-93 5.0 Mass Air Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/91-93_5.0_EEC_Wiring_Diagram.gif

Complete computer, actuator & sensor wiring diagram for 94-95 5.0 Mass Air Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/94-95_5.0_EEC_Wiring_Diagram.gif

1986 Mustang 5.0 1986 EEC/ ECM. EFI wiring schematic,
http://www.veryuseful.com/mustang/tech/engine/images/Mustang-86-Mustang-ECC-EFI.gif

Vacuum diagram 89-93 Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/mustangFoxFordVacuumDiagram.jpg

HVAC vacuum diagram
http://www.veryuseful.com/mustang/tech/engine/images/Mustang_AC_heat_vacuum_controls.gif

TFI module differences & pinout
http://www.veryuseful.com/mustang/tech/engine/images/TFI_5.0_comparison.gif

Fuse box layout
http://www.veryuseful.com/mustang/tech/engine/images/MustangFuseBox.gif
 
R

rockyracoon

10 Year Member
Nov 23, 2005
874
27
49
margate NJ
Jul 1, 2009
#3
  • Jul 1, 2009
  • #3
whoa great info

ok thanks so much for the information.
 

TenorPlayinGuy

Founding Member
Aug 3, 2001
1,208
0
36
Canyon Country, Ca
Jul 1, 2009
#4
  • Jul 1, 2009
  • #4
yeah the mustang does have a vacuum canister under the passenger side fender. It holds vacuum for the times when we go WOT! Then again, it's not like your changing your settings at the same time your punching it light to light.
 

TechSteele

New Member
Mar 8, 2009
60
1
0
North Coast
Jul 1, 2009
#5
  • Jul 1, 2009
  • #5
Open the Glove Compartment, then push in and open the door ALL the way.
There is a vacuum can in there too.
 

ID89GT

10 Year Member
May 26, 2008
1,659
18
49
Spokane Valley, WA
Jul 1, 2009
#6
  • Jul 1, 2009
  • #6
TechSteele said:
Open the Glove Compartment, then push in and open the door ALL the way.
There is a vacuum can in there too.
Click to expand...

Thats not a vacuum can, thats the valve or whatever that opens up the air vent door for the A/C so that it does the recirculate air. Pretty sure anyway..
 
You must log in or register to reply here.

Similar threads

B
A/C Issues
  • Boats90GT
  • Jun 10, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
2
Views
192
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 11, 2026
Mcmahst
Mustang II 4 cyl gear hunting and possibly messed up vacuum system
  • oesterreicher
  • May 31, 2026
  • 1974 - 1978 Mustang II Talk & Tech
Replies
11
Views
563
1974 - 1978 Mustang II Talk & Tech Jun 14, 2026
manicmechanic007
P
I need definitive heater valve and AC expansion valve answers
  • PurAU
  • Sep 26, 2026
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
4
Views
240
1965 - 1973 Classic Mustangs -General/Talk- Oct 1, 2026
GypsyR
G
Forced Induction Bypass valve reference
  • JD1964
  • Jun 1, 2025
  • Fox 5.0 Mustang Tech
Replies
5
Views
423
Fox 5.0 Mustang Tech Jun 1, 2025
JD1964
J
Emission problems
  • jls.zmmr
  • Feb 5, 2026
  • 1994 - 1995 Specific Tech
Replies
2
Views
337
1994 - 1995 Specific Tech Feb 7, 2026
AeroCoupe
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?