• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech

Intake Vac Line Questions Need HELP FOR THE AM!

  • Thread starter Thread starter Adam95GT
  • Start date Start date May 26, 2009
  • 1
  • 2
  • 3
Next
1 of 3 Next Last

Adam95GT

New Member
Aug 14, 2006
2,564
3
0
Burlington, NJ
May 26, 2009
#1
  • May 26, 2009
  • #1
where do the lines from these ports in the intake manifold go:


What about these in the drivers side of the bay:




And these on the lower...


anyone know or have a diagram??? its the only thing keeping my upper off...
 

SN95StangMan

New Member
Jul 5, 2003
1,292
0
0
Lynwood, CA
May 26, 2009
#2
  • May 26, 2009
  • #2
I can't find my vacum diagram, so ill do my best with some pics...



these two,



will go here:



In that nipple that you see there without anything connected goes a smaller diameter "softer" line, that comes from the canister on the passenger side. (blue arrow on picture below)







The red arrowis for the big line in this pic, and the green for the small one.

 

SN95StangMan

New Member
Jul 5, 2003
1,292
0
0
Lynwood, CA
May 26, 2009
#3
  • May 26, 2009
  • #3
also, it looks like here you are missing that line that goes from the vacum tree and down to the brake pedal assembly.

 

Chern_889

New Member
Oct 22, 2006
86
0
0
Lumsden, Saskatchewan
May 26, 2009
#4
  • May 26, 2009
  • #4
Best i could do with paint, and using a combo of you pics and my own car
EDIT: Damn, you beat me to the punch, o well





Where it says not sure, thats actually the line supply for the HVAC controls, it goed into the FW right by the Air conditioning tubes, in the rubber grommet that surrounds the tubes







I dont know how the Fox style cars are set up, maybe they pull the vac from the bottom of the mani also??
 

Adam95GT

New Member
Aug 14, 2006
2,564
3
0
Burlington, NJ
May 26, 2009
#5
  • May 26, 2009
  • #5
Thanks guys... i think that second one that you said for the brake is for the cruise i think.... That one side of the manifold that you labled PCV has a plug in it... should i move that to where you said to plug under the manifold?
 

Adam95GT

New Member
Aug 14, 2006
2,564
3
0
Burlington, NJ
May 26, 2009
#6
  • May 26, 2009
  • #6
Also i think i have that vac t but im not sure where it would go on the fox style egr set up
 

Chern_889

New Member
Oct 22, 2006
86
0
0
Lumsden, Saskatchewan
May 26, 2009
#7
  • May 26, 2009
  • #7
Adam95GT said:
Thanks guys... i think that second one that you said for the brake is for the cruise i think.... That one side of the manifold that you labled PCV has a plug in it... should i move that to where you said to plug under the manifold?
Click to expand...

Thats how i set up my edelbrock, i think the PVC needs a two good vac sources, and hoses are pre-formed to fit that way
 

Adam95GT

New Member
Aug 14, 2006
2,564
3
0
Burlington, NJ
May 26, 2009
#8
  • May 26, 2009
  • #8
Chern_889 said:
Thats how i set up my edelbrock, i think the PVC needs a two good vac sources, and hoses are pre-formed to fit that way
Click to expand...

Cool what about the FPR and stuff... can i feed from under the intake as well?
 

Chern_889

New Member
Oct 22, 2006
86
0
0
Lumsden, Saskatchewan
May 26, 2009
#9
  • May 26, 2009
  • #9
Adam95GT said:
Cool what about the FPR and stuff... can i feed from under the intake as well?
Click to expand...

Im really not sure, i suppose you could, you have enough empty ports. I dont know how a fox is set-up, but you should try and mimic that i guess
 

Adam95GT

New Member
Aug 14, 2006
2,564
3
0
Burlington, NJ
May 26, 2009
#10
  • May 26, 2009
  • #10
Im getting rid of the smog and ac as well so im just trying to get things strait ya know thanks again

anyone else have any ideas??? or pics of how the vac is done on their maifold
 

Adam95GT

New Member
Aug 14, 2006
2,564
3
0
Burlington, NJ
May 26, 2009
#11
  • May 26, 2009
  • #11


SO i see that the fpr connects to this fitting... which i think i have...


Where does the line off the back of that fitting go to? and y is that one side blocked off?


I did find these for a fox:
http://www.veryuseful.com/mustang/tech/engine/images/mustangFoxFordVacuumDiagram.jpg




Also that vac line that goes to where the AC comes through the fire wall is that just for AC or the HVAC??? i welded up that hole and pushed the vac line back in to the car.

here correct??
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
33
129
May 26, 2009
#12
  • May 26, 2009
  • #12
Chern_889 said:
Best i could do with paint, and using a combo of you pics and my own car


Click to expand...

This is indeed for the EVAP. The line goes under the antenna, where the charcoal cannister resides.

This might help:
(Copy and past the URL into a new window. Remove spaces in the URL. For some reason the SN filter goes nuts on this one)

http://s b f t e c h.com/index.php?PHPSESSID=b129dd2527c5f30c566afebc50249017&topic=4768.0
 

Adam95GT

New Member
Aug 14, 2006
2,564
3
0
Burlington, NJ
May 26, 2009
#13
  • May 26, 2009
  • #13
Thanks man. I do need to look through the EVTM some more... but i have a hard time looking at these diagrams... LOL
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
33
129
May 26, 2009
#14
  • May 26, 2009
  • #14
PM if needing clarification. I can check the same diagram/page at which you're looking and see if something makes sense.

The stuff Joel put up on SBFT is pretty good (best online diagrams I've seen).
 

Adam95GT

New Member
Aug 14, 2006
2,564
3
0
Burlington, NJ
May 26, 2009
#15
  • May 26, 2009
  • #15
Once again thanks for the help. I think my problem is knowing exactly what each little thing is named i know what everything looks like but not what it is called im working on it but my knowledge is still a little weak.
 

95Vert383AOD

15 Year Member
Jun 10, 2008
1,133
34
69
New Bedford, MA
May 27, 2009
#16
  • May 27, 2009
  • #16
Doesn't really matter where on the manifold you connect the vacuums to. The only vacuum that connects before the throttlebody plate is the valve cover breather. Wether the vacuum under the intake is 3/8" or 1/4" is doesn't matter. But obviously you wouldn't put a 3/8" hose on a 1/4" barb.
 

Chern_889

New Member
Oct 22, 2006
86
0
0
Lumsden, Saskatchewan
May 27, 2009
#17
  • May 27, 2009
  • #17
Adam95GT said:
SO i see that the fpr connects to this fitting... which i think i have...


Where does the line off the back of that fitting go to? and y is that one side blocked off?


I did find these for a fox:

Also that vac line that goes to where the AC comes through the fire wall is that just for AC or the HVAC??? i welded up that hole and pushed the vac line back in to the car.

here correct??
Click to expand...
.

The Big line from that T goes over to the vaccum tree by the Brake booster, the one on the back, in that picture, goes to the FPR, and the one on the top, that looks like it is block off, is actually the vac source for the emissions **** hidden underneath the pass. side fender.

That line that goes through your now welded hole, is for all the HVAC controls, mainly the vent door changer

I took some more pics from diff angles


 

Adam95GT

New Member
Aug 14, 2006
2,564
3
0
Burlington, NJ
May 27, 2009
#18
  • May 27, 2009
  • #18
ok i put that 3 prong vac tree under the manifold and ran that big hose that is bound to the HVAC controlls to the big connector. then the 2 small ones i ran the FPR and the EGR to. I also reconnected the One that goes to the brakes to the vac tree... as well as PCV hoses which are rock solid i think i need new ones.... i might call iut an early day fiddling with header fitment and vac sucks
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
33
129
May 27, 2009
#19
  • May 27, 2009
  • #19
You dont have the EGR connected to manifold vacuum, do you? It can only receive the line coming from the EGR solenoid.
 

Adam95GT

New Member
Aug 14, 2006
2,564
3
0
Burlington, NJ
May 27, 2009
#20
  • May 27, 2009
  • #20
HISSIN50 said:
You dont have the EGR connected to manifold vacuum, do you? It can only receive the line coming from the EGR solenoid.
Click to expand...

Good call... Yes i do i have tha vac comming from the manifold to the nipple on the valve... where is the egr solenoid?
 
  • 1
  • 2
  • 3
Next
1 of 3 Next Last
You must log in or register to reply here.

Similar threads

D
Please help with vacuum lines
  • Dawgs000082
  • May 10, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
2
Views
107
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 10, 2026
Dawgs000082
D
Electrical/engine bay harness questions
  • djj62478
  • May 29, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
7
Views
244
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 6, 2026
djj62478
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
266
1974 - 1978 Mustang II Talk & Tech Jun 14, 2026
manicmechanic007
A
Vacuum line help
  • Artyom
  • Aug 27, 2024
  • 1994 - 1995 Specific Tech
  • 2 3
Replies
40
Views
3K
1994 - 1995 Specific Tech Sep 26, 2024
Artyom
A
R
Need a little help identifying this plug
  • redlineracing1328
  • Oct 7, 2025
  • 1994 - 1995 Specific Tech
Replies
7
Views
299
1994 - 1995 Specific Tech Oct 8, 2025
revhead347
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific 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?