AutoMobile repair Etc

Greetings!

I've started learning about my Explorer, and through various DIY repairs, the vacuum lines have become mixed up. I'm following the diagram, but have a few questions. Here's the rundown:

Here's the diagram. The items I can't locate are: Brake Booster, A4LD trans, FPRC, and Speed Control.

Here's where everything's plugged in. The EVR and EGR are correct. #1 goes across the top of the intake and down through the back somewhere. #2 and #3 go to two devices on the driver's side which you'll see clearly below. I plugged #4 and #5 because I don't know where they should go. There are 7 vacuum-line holes, but only five are used. According to the diagram there should be six, so at least one device is not receiving vacuum.

What are #1, #2, and #3 connected to? #1 is very stiff, and goes across the intake and down through the back somewhere.

I think I figured this one out correctly. The CANP is a little solenoid going to the CAN, which is called a Charcoal Canister. I don't know its exact function. I'm also unsure whether it's connected the right direction. This is the only way it would fit (short line leading left, and longer leading to the CAN) A bigger question is whether I have the short line connected to the right spot (see below):

This is what I THINK is the Throttle-Body hole in the diagram, leading to the CANP.

And finally, (slightly unrelated), just want to make sure this is correct. That's the DFPE. Front line is connected to the top EGR-tube hole. Back line is conncted to the bottom EGR-tube hole. I don't remember which hole is in or out.

Back to the diagram: In the top left there's a "Main VAC" leading to the PCV valve. Where is that, and from which vac-hole? Everything else on the left I haven't fussed with yet.

Thanks for your time...

**Tbars4** · 06-16-2012, 12:59 PM

..The PCV and it's hose plug directly into the rear of the intake manifold..It does not lead up to the "octopus" Main Manifold vacuum multi connector thingy..

..Some of your notes you put on your pictures are incorrect..but it looks like most everything is plugged in correctly which let's you follow the diagram to learn more about what it means..

KiloWatts · 06-16-2012, 01:02 PM

Thanks... If you have time, which notes are incorrect?

Also, if I only have 5 hoses plugged into the octopus, which one is missing?

KiloWatts · 06-16-2012, 01:29 PM

Okay, after researching the Fuel Pressure Regulator, I found it and it was the missing connection! I've plugged it into the 'octopus' now, so everything should be correct now.

So now I've just narrowed it down to identifying the Brake Booster, A4LD, and Speed control.

**Rick** · 06-16-2012, 04:04 PM

The black round canister behind your master cylinder is the power brake booster. The large vacuum line is correctly plugged in.

I don't have an auto trans or speed control so I can't help with that.

*arco777* · 06-16-2012, 06:42 PM

Quote:

Originally Posted by KiloWatts

Okay, after researching the Fuel Pressure Regulator, I found it and it was the missing connection! I've plugged it into the 'octopus' now, so everything should be correct now.

So now I've just narrowed it down to identifying the Brake Booster, A4LD, and Speed control.

The A4LD (trans) vac line runs down to the passenger side of the trans and hooks to the vacuum modulator. If you're experiencing 3000RPM shifts from 1-2, then there may be an issue with this line - otherwise it should be fine.

Brake booster is the round cylinder on the firewall and from your pics it's hooked up correctly.

Speed control is also hooked up fine, it's the round cylinder-lookin thing on the drivers side fender.

Do you have any actual driveability problems or a CEL? Otherwise everything should be hooked up fine - you'd notice if there was a vac leak.

*L.A.X* · 01-11-2014, 02:55 AM

I know this is an old thread but I need help

*L.A.X* · 01-11-2014, 02:57 AM

What is the long plastic cylinder looking thing on top of the heater box? Where does the vacuum line to that go?

*arco777* · 01-11-2014, 03:59 AM

It's a vacuum reservoir.

**Tbars4** · 01-11-2014, 07:17 AM

From the reservoir, that plastic line will run over to the right fender into a wire cluster just to the bottom left of the heater fan..(between the fan and the fender)..

..This is how that vacuum line enters into the cab and runs behind your glove box over toward your heater controls..

AutoMobile repair Etc

Tuesday, May 13, 2014

94 Explorer Vacuum-Line madness (pics inside) - Ford Explorer and Ranger Forums "Serious Explorations"®

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06-16-2012, 12:59 PM	#2
Tbars4 Offroad/Fitness Moderator anaheim hills,california 95 ranger 4x4/ 91 X 4x4 Join Date: Mar 2007 Posts: 24,733 Vehicle Specs Mentioned: 3 Post(s) Tagged: 0 Thread(s) Quoted: 132 Post(s)	..The PCV and it's hose plug directly into the rear of the intake manifold..It does not lead up to the "octopus" Main Manifold vacuum multi connector thingy.. ..Some of your notes you put on your pictures are incorrect..but it looks like most everything is plugged in correctly which let's you follow the diagram to learn more about what it means.. __________________ I have Rocks in my head. What's in yours? '95 ranger xl 4x4 2.3L std cab, 2 sticks Ranger RegistryThe Squirrel '91 4x4=To much to list, much more to add.. Project "X" and more Pics & Mod's List How to: Wheels,Tires, & Lifts... Buy Explorerforum.com Items here

06-16-2012, 01:02 PM	#3
KiloWatts Wannabe Elite Explorer Philadelphia '94 Explorer Join Date: Sep 2006 Posts: 17 Vehicle Specs Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 0 Post(s) (Original Poster)	Thanks... If you have time, which notes are incorrect? Also, if I only have 5 hoses plugged into the octopus, which one is missing?

06-16-2012, 01:29 PM	#4
KiloWatts Wannabe Elite Explorer Philadelphia '94 Explorer Join Date: Sep 2006 Posts: 17 Vehicle Specs Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 0 Post(s) (Original Poster)	Okay, after researching the Fuel Pressure Regulator, I found it and it was the missing connection! I've plugged it into the 'octopus' now, so everything should be correct now. So now I've just narrowed it down to identifying the Brake Booster, A4LD, and Speed control.

06-16-2012, 04:04 PM	#5
Rick Admin Pumpkin Pilot Wayoutin, Aridzona '93 XL Pumpkin Edition Join Date: Feb 1999 Posts: 28,765 Vehicle Specs Mentioned: 14 Post(s) Tagged: 0 Thread(s) Quoted: 144 Post(s)	The black round canister behind your master cylinder is the power brake booster. The large vacuum line is correctly plugged in. I don't have an auto trans or speed control so I can't help with that. __________________ Rick Horwitz, AB7FH "Serious Exploration's" Admin Rick's '93/'98 Explorer "The Great Pumpkin" Dodge Dart 512 Resto/Race 10.29 @ 129 2004 Mustang Mach 1 1960 Dodge Dart Seneca

01-11-2014, 02:55 AM	#7
L.A.X Elite Explorer Los Angeles, Ca 1991 Ford Explorer EB Join Date: Jul 2013 Posts: 330 Vehicle Specs Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 48 Post(s)	I know this is an old thread but I need help

01-11-2014, 02:57 AM	#8
L.A.X Elite Explorer Los Angeles, Ca 1991 Ford Explorer EB Join Date: Jul 2013 Posts: 330 Vehicle Specs Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 48 Post(s)	What is the long plastic cylinder looking thing on top of the heater box? Where does the vacuum line to that go?

01-11-2014, 03:59 AM	#9
arco777 Elite Explorer 2x 1994 Explorer Join Date: Apr 2008 Posts: 1,898 Vehicle Specs Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 45 Post(s)	It's a vacuum reservoir.