What Vaccum lines do i need to use on a Explorer intake?

88GTMustang

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Oct 31, 2003

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Sep 3, 2004

#1

• Sep 3, 2004

• #1

Compared to the regular 5.0 intake there are like 5 more intlets. i need to know which ones i need to use and where they go too?which ones can i cap off? its driving me crazy! If anyone has a pic of one that would be Excellent, with possibly drawings showing where they need to go! I know im asking kinda much but i really need to know, I tried fooling around with them but my car would die, or it would start smoking pretty bad! i mean i tried looking at the routing maps (schematics) but im guess im eliterate (sp) I am a picture learner!
thanks in advance.

 

Michael Yount

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Apr 10, 2002

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Sep 3, 2004

#2

• Sep 3, 2004

• #2

You're thinking too much about it. It's easy. Vacuum is vacuum - it doesn't matter where it comes from - just pick the ones that are in the location you need and are the right size to work with your connections. Cap the ones you don't use. One caution - take a short length of hose (the right size) and actually suck on each one. There were one or two vacuum ports on mine that were non-functional - they weren't open into the manifold. I capped them too just to be sure.

You did mark your hose connections before you disconnected things, right?

 

88GTMustang

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Sep 4, 2004

#3

• Sep 4, 2004

• #3

yes i marked them, but you know how things kinda get messed up after being moved around for a few months, (lol) i thought i had them on correctly but then i started to switching them around to get a steady idle,and i would but then it would be idleing at 1400 rpms, i dunno its confusing me even trying to explain it. i just want to hook everything back up in the proper locations and be done with that part of the car.

 

Michael Yount

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Apr 10, 2002

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Sep 4, 2004

#4

• Sep 4, 2004

• #4

You've got to get vacuum to the cannister purge valve, the egr switch (and a line from the switch to the valve), to the thermactor switches, the power brakes, the fuel pressure regulator, inside the car to power the hvac controls, and to the pcv valve. If you didn't clearly mark which side of the various switches (egr, thermactor) things came off of, you'll have to get access to more detail to figure out exactly how those bits hook up. Where those vacuum sources come from on the intake doesn't matter - as long as the size hoses are compatible with the manifold ports. Obviously, you can minimize your hose by hooking to ports that are close by - hook the pcv valve to one of the larger ports on the backside of the manifold for example.

 

jrichker

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#5

• Sep 4, 2004

• #5

One large vacuum line from the upper front goes to the carbon canister

One large vacuum line from the rear goes to the vacuum tree.

One small line in the front feeds the Smog pump solenoid control valves on the rear of the passenger side wheel well.

One small line in the rear goes to the fuel pressure regulator.

One small line in the rear goes to the EGR suction regulator.

One large line in the rear goes to the PVC valve.

 

88GTMustang

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Sep 5, 2004

#6

• Sep 5, 2004

• #6

whats the carbon canister? is that needed?

 

Z

Zombietime

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#7

• Sep 5, 2004

• #7

88GTMustang said:

whats the carbon canister? is that needed?

Click to expand...

it filters gas vapors.

 

88GTMustang

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Sep 6, 2004

#8

• Sep 6, 2004

• #8

Zombietime said:

it filters gas vapors.

Click to expand...

so is it needed?

 

Michael Yount

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Sep 6, 2004

#9

• Sep 6, 2004

• #9

If you disable the purge valve you'll get an error code - don't know if it will set off the check engine light or not. You must find an alternative way to vent the fuel tank so that all that sloshing around doesn't build up too much pressure; be sure air can get in - it must for the fuel to come out. If you simply leave that vent line open to atmosphere, many people complain of the smell of gas vapors especially in closed in garages.

So, is it needed? Depends on how you feel about the stuff above. Mine has one. It doesn't help performance to remove it, it weighs next to nothing and takes up little space (if you don't like the look of it, move it up under the fender) and it protects the environment. Makes sense to me to leave it on mine. Only you can figure out what makes sense to you.