FPR & EGR vacuum lines

TrophyHead

15 Year Member

Mar 18, 2003

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Apr 20, 2005

#1

• Apr 20, 2005

• #1

Do the vacuum lines coming from under the intake go right on top of the fuel pressure regulator itself. The little port on top?

And does the vacuum for the EGR go directely to the little port on the side of EGR valve?

I just want to make sure I didnt mess anything up.

 

S

ss93cobra

Founding Member

Apr 10, 2002

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Wilmington NC

Apr 20, 2005

#2

• Apr 20, 2005

• #2

On the vac. tree under the upper intake one of the smaller lines does indeed go to the f.p.r. port on top of the regulator. The one for the egr valve comes over from behind the passenger side shock tower and directly onto the silver valve itself. Hope this helps.

 

TrophyHead

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Apr 20, 2005

#3

• Apr 20, 2005

• #3

OK cool I understand the FPR now.

The EGR has got me little confused. I hear you though about over on the passenger side strut tower.

But on the EGR valve itself there's a little port on it. What goes to this? Coolant?

Thanks for the help.

 

S

ss93cobra

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Apr 10, 2002

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Apr 20, 2005

#4

• Apr 20, 2005

• #4

Nope. not coolant. The little port pointing towards the passenger side hood hinge area is where the vacuum line goes.

 

TrophyHead

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Mar 18, 2003

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Apr 20, 2005

#5

• Apr 20, 2005

• #5

OK the 1? and 2? go to the PCV valve I got that.

So coming from the EGR port under the intake it goes over to the passenger side strut tower. Then from there another lines goes to the EGR?

Thanks again much appricated

 

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• IntakeVacPorts.webp

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jrichker

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Apr 21, 2005

#6

• Apr 21, 2005

• #6

TrophyHead said:

OK the 1? and 2? go to the PCV valve I got that.

So coming from the EGR port under the intake it goes over to the passenger side strut tower. Then from there another lines goes to the EGR?

Thanks again much appricated

Click to expand...

The EGR vacuum comes from any one of the small vacuum lines that connect directly to the upper intake manifold. Then the line goes to the EVR (Electronic Vacuum Regulator) located on the aft side of the passerger side strut tower. The line from the EVR then goes to the EGR valve.

Here's the theory on how it works...
The EGR system has a vacuum source (line from the intake manifold), a computer operated electrical vacuum regulator (EVR), the EGR valve and the passages in the heads and intake manifold that route exhaust gas to the EGR valve. The computer uses RPM, Load, and some other factors to tell the vacuum regulator to pass vacuum to open the EGR valve. The EGR sensor tells the computer how far the EGR valve is open. Then computer adjusts the signal sent to the EGR vacuum regulator to hold, increase or decrease the vacuum.

The EGR shuts off at Wide Open Throttle (WOT), so it has minimal effect on performance. The addition of exhaust gas drops combustion temperature, increases gas mileage and reduces the tendency of the engine to ping.

 

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• mustangFoxFordVacuumDiagram.webp

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TrophyHead

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Apr 23, 2005

#7

• Apr 23, 2005

• #7

Completley understood.

Thanks jrichker

 

C

CMCFounder

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Apr 20, 2003

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Spokane, WA

Apr 28, 2005

#8

• Apr 28, 2005

• #8

On the picture of the stock upper intake that Trophyhead attached to his message, what connects to "?#2"

 

TrophyHead

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Apr 28, 2005

#9

• Apr 28, 2005

• #9

That is for the PCV valve...the ?#2 is for the F connector on the valve. You can cap it off and forget about the F connector and run the pre-bent PCV hose from the #1 port right to PCV valve.

I capped #2 off.

 

Stangsgrl

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Mar 13, 2004

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Mesa, AZ

May 2, 2005

#10

• May 2, 2005

• #10

A cobra intake does not have the #1 slot...

Any ideas where to connect the pcv...???

 

StangLou

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Jul 9, 2003

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May 3, 2005

#11

• May 3, 2005

• #11

ttt... any ideas??? I put mine where the hose on the top left of the pic is. In this one it looks like its pointing up, but its the only place I could figure out it could go