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

vacuum lines

  • Thread starter Thread starter KrazZ27
  • Start date Start date Feb 22, 2009
  • 1
  • 2
Next
1 of 2 Next Last

KrazZ27

Member
Feb 16, 2008
83
0
6
Feb 22, 2009
#1
  • Feb 22, 2009
  • #1
Alrite trying to clear the excess lines out what lines do i need and what do i not need?
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Feb 22, 2009
#2
  • Feb 22, 2009
  • #2
All the vac lines have a purpose or they would not be there.

Do you have emissions equipment on the car?

A little info is helpful.
 

KrazZ27

Member
Feb 16, 2008
83
0
6
Feb 22, 2009
#3
  • Feb 22, 2009
  • #3
No smog pump egr valve will be blocked off do to valve covers....
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Feb 22, 2009
#4
  • Feb 22, 2009
  • #4
With such little info given (we don't even know the year of car or engine), this is tough.

Assuming you will not need the EGR again (and are able to turn it off with a tune or setting a hard code) nor the A.I.R. system, you should be able to remove and plug the feeds for the TAB, TAD and EVR.
 

KrazZ27

Member
Feb 16, 2008
83
0
6
Feb 22, 2009
#5
  • Feb 22, 2009
  • #5
94 5.0 tfs intake 30lb injectors what more do you need this is just a basic question on what lines i can block off with out getting any lights...Ask me what you need and i will tell honestly at this point i just want to get ride of everything to clean up the engine bay...
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Feb 22, 2009
#6
  • Feb 22, 2009
  • #6
Here's a vacuum schematic.
 

toyman

10 Year Member
Jul 19, 2007
1,944
54
79
Vernon BC
Feb 23, 2009
#7
  • Feb 23, 2009
  • #7
HISSIN50 said:
With such little info given (we don't even know the year of car or engine), this is tough.
Click to expand...

Geeze, JT, are you ever a stickler for details
Click to expand...
 

RIO5.0

15 Year Member
Feb 16, 2001
6,892
8
128
N.H.
Feb 23, 2009
#8
  • Feb 23, 2009
  • #8
No smog and EGR then all you need to feed is the purge soleniod on the firewall and your fuel pressure regulator...the rest of the vac lines are the PVC and a big hose that feeds the vac tee on the drivers inner fender..

The EGR feed in this pic can feed your FPR..This is a GT40/93 Cobra vac tree...depends on the type of upper you run...

 

KrazZ27

Member
Feb 16, 2008
83
0
6
Feb 23, 2009
#9
  • Feb 23, 2009
  • #9
should i leave the egr valve plug in or can i remove it completely reason im asking is i put on bigger valve covers and my egr valve wont clear them with a 1 inch spacer..
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Feb 23, 2009
#10
  • Feb 23, 2009
  • #10
toyman said:
Geeze, JT, are you ever a stickler for details
Click to expand...



I think this thread was originally in 5.0 Tech, where we obviously have carbed, SD, MAF, etc cars. You really need specifics over there.
Click to expand...
 
S

Stopsign32v

Member
May 18, 2008
394
0
16
Gville, SC
Feb 23, 2009
#11
  • Feb 23, 2009
  • #11
So from the upper intake if you don't have a PCV or EGR could you just run a line to the fuel pressure regulator and I assume one to the vaccum tree? What about the power brakes? Does it need anything? Guy at Trickflow said yes..
 

KrazZ27

Member
Feb 16, 2008
83
0
6
Feb 24, 2009
#12
  • Feb 24, 2009
  • #12
the brakes are controled from the tree but if i disconect the egr valve wont it throw a light?
 
S

Stopsign32v

Member
May 18, 2008
394
0
16
Gville, SC
Feb 24, 2009
#13
  • Feb 24, 2009
  • #13
KrazZ27 said:
the brakes are controled from the tree but if i disconect the egr valve wont it throw a light?
Click to expand...

yea you will have to have the egr turned off with a tune.
 

RIO5.0

15 Year Member
Feb 16, 2001
6,892
8
128
N.H.
Feb 24, 2009
#14
  • Feb 24, 2009
  • #14
You feed this from your upper...this Tee is what feeds the booster..


Unplug the EGR plug .... undo the 3 screws to remove the below from the EGR.... youll see a plunger.... secure this 1/2 way somehow, plug it back the the connector and stash it...your light will stay off... If you have a chip done then have them kill it for good... Mines homied like so... anything to hold that plunger 1/2/ way...
 

KrazZ27

Member
Feb 16, 2008
83
0
6
Feb 25, 2009
#15
  • Feb 25, 2009
  • #15
Alrite i got everything hooked up like i was told but i forgot to hold the egr valve half way open. How ever i can not get the car to start im getting fuel and spark i have over 90 psi in each cylinder so i have compression but it sill will not start is it possible i have a leak that would cause it not to start? if so is there a way i can test the vacuum lines?
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Feb 25, 2009
#16
  • Feb 25, 2009
  • #16
You have fuel pressure or you have injector pulsing? You need both.
 

KrazZ27

Member
Feb 16, 2008
83
0
6
Feb 25, 2009
#17
  • Feb 25, 2009
  • #17
How can i test for injecter pulsing?
 

RIO5.0

15 Year Member
Feb 16, 2001
6,892
8
128
N.H.
Feb 25, 2009
#18
  • Feb 25, 2009
  • #18
Vacuum loss would cause it to run like ass... but it would run. recheck to see if somethings disconnected if it was running before...

What he said on the injector pulsing... Usually fuel and spark and no start would make me think TFI ???
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Feb 25, 2009
#19
  • Feb 25, 2009
  • #19
KrazZ27 said:
How can i test for injecter pulsing?
Click to expand...

Use a noid light. Injectors receive constant accessory 12 volts. The ground to them is modulated via the EEC drivers. A noid is biased across an injector connector. Crank the engine and look for the noid to flash. No flash means we need to find an issue.
 

KrazZ27

Member
Feb 16, 2008
83
0
6
Feb 25, 2009
#20
  • Feb 25, 2009
  • #20
The tfi is hooked up and was working fine before all of this...
 
  • 1
  • 2
Next
1 of 2 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
132
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 10, 2026
Dawgs000082
D
S
Smog delete /vacuum lines
  • Serg.Xof
  • Feb 18, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
1
Views
241
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Feb 18, 2026
RileyDymond
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
318
1974 - 1978 Mustang II Talk & Tech Jun 14, 2026
manicmechanic007
E
Chasing Vacuum leak 99 GT
  • EBNS_2005
  • May 2, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
2
Views
170
1996 - 2004 SN95 Mustang -General/Talk- May 3, 2026
X-cam34
X
B
A/C Issues
  • Boats90GT
  • Jun 10, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
2
Views
119
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 11, 2026
Mcmahst
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?