Think' bout reconnecting my EGR, few questions.

R

Rerun

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#1

• Aug 23, 2004

• #1

It's currently on the vehicle and plugged into the harness, but the vacuum line isn't going to it. Car keeps throwing an EGR code so I'm going to take it off and test it. My question is, I don't seen the vacuum line anywhere, I've got a pretty big one capped in the general area but looks to big to sit on the spout of the EGR. Anyone know a general area of where I should be looking for the EGR vacuum line? Hope it's not behind the intake, it's tight in there. Thanks in advance fellas.

 

Papageof

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Aug 23, 2004

#2

• Aug 23, 2004

• #2

The one my car is using is connected to the little rubber ditribution connector next to the receiver/drier for the a/c, it just sorta hangs there. It has a bunch of little plastic lines comming out of it and one goes to the egr.

It should be the one with no vacuum at idle since the egr vacuum control switch should be shut.

 

jrichker

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#3

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See http://www.veryuseful.com/mustang/tech/engine/images/88Stang5.0Vacuum.gif

Or http://www.veryuseful.com/mustang/tech/engine/images/mustangFoxFordVacuumDiagram.jpg

The EGR connects a white line to a 4 port rubber connector on the passenger side wheel well. The back side of the 4 port connector couples the white line to a red line. The red line goes to the Electonic Vacuum Regulator (EVR) that has a dark green wire & a red wire connected to it.

The green tube from the input of the the EGR goes to the coupler and then connects to the intake manifold or one of the spare ports on the vacuum tree. This line has been changed on mine, and I do not know what the orginal color was for the line that connects to the intake manifold.

 

R

Rerun

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#4

• Aug 23, 2004

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Pulled the EGR off the car, couple of things I noticed. I blew on the spout on the EGR and seemed to fill up like a baloon, and when I left off it pushed the air back out. I stuck a finger in the intake where the EGR was connected and noticed it was a little wet, and smelled like fuel to me. I think I found the passanger vacuum connection you guys spoke of, everything appears to be disconnected, I took a picture:

So, do I just plug a vacuum hose into the proper hole on that connection and run it to the EGR? Also, do I need to plug up the rest of those?

 

R

Rerun

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#5

• Aug 23, 2004

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* BUMP, edited previous message *

 

jrichker

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There is another half to the connector you have in hand. It is where all the smaller tues connect.

Re-read my previous post & you will find where the vacuum lines connect to the manifold vacuum & EGR valve.

 

R

Rerun

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#7

• Aug 23, 2004

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Thanks for the reply's buddy, unfortunately I'm new as hell when it comes to this crap. The connector I have in my hand was just hanging around, there wasn't another part to it unless someone has taken it off or something. When I trace back where those wires go, it goes back to the EVR with green and red tubing. If I'm looking at the top of the connector, it has holes in it which appear to be where you plug the vacuum lines into it. If there's another half to it, someone must of taken it off and I'm going to have to go junkyard hunting or something.

 

R

Rerun

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#8

• Aug 23, 2004

• #8

Anyone wanna do me a favor and take a picture of this section of the car? That connector and the EVR section so I can see what's going on? I need to buy some vacuum hose.

 

Papageof

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#9

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Where did you smell the fuel? The EGR is really close to the fuel pressure regulator (also a vacuum device) and it may be leaking a little bit. That will send fuel to the intake via the vacuum line or if the o-ring leaks it will drip fuel by the rail.

 

R

Rerun

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#10

• Aug 23, 2004

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Papageof said:

Where did you smell the fuel? The EGR is really close to the fuel pressure regulator (also a vacuum device) and it may be leaking a little bit. That will send fuel to the intake via the vacuum line or if the o-ring leaks it will drip fuel by the rail.

Click to expand...

When I stuck my finger into the intake where the EGR should be, it was wet. Mind you the car has been sitting for 2 days. When I smelled my finger, I smelled a hint of fuel.

 

R

Rerun

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#11

• Aug 23, 2004

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jrichker, when you say one of the vac lines connects to the vacuum line, you mean to the post labeled "EGR system" on the following picture?

 

R

Rerun

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#12

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• #12

Can I just run new vacuum lines from the egr vacuum regulator, one to the egr valve and one to the intake manifold? Or is there something special I should know about?

 

jrichker

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#13

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New lines will be fine, red goes to the EGR valve. Green goes to the intake manifold vacuum source, which is any free vacuum line that fits.

There are a couple more lines that go to the smog pump control valves, but I don't remember the colors for what goes where. You don't need them to get the EGR to work.

 

Michael Yount

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Aug 24, 2004

#14

• Aug 24, 2004

• #14

The source of vacuum for the egr regulator doesn't matter - just get full manifold vacuum to the egr regulator, and then run a line from the output of the regulator (the computer 'regulated' vacuum port on the switch) to the egr valve - and you're good to go.

 

R

Rerun

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#15

• Aug 24, 2004

• #15

Connected up the hoses, pulled the one off the EGR and i'm getting vacuum at idle. Bad regulator? I'm thinking about going to autozone and buying a new regulator, they seem to be calling it an EGR Vacuum Solenoid?

 

Michael Yount

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#16

• Aug 24, 2004

• #16

You had the regulator plugged into the wiring harness, right? Well, with vacuum on the hose, was the egr valve opening and screwing up the idle? At least that would tell you the valve was trying to open. Have you pulled codes on this thing? Now that you've had it hooked up it may give you a code that tells you what's up.

 

R

Rerun

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#17

• Aug 24, 2004

• #17

Yeah, the EGR was disconnected, I used to get a code saying no input from EGR or whatever. This morning I had vacuum on the EGR hose at idle, and with it plugged in the idle was horrible. When I took it off you could definately see it ****ing with the idle. Maybe I got the vacuum hoses backwords on the regulator? I did green to manifold, and red to EGR.

 

Michael Yount

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Aug 24, 2004

#18

• Aug 24, 2004

• #18

Justin - I just assumed you would have already trouble-shot by swapping the hoses; yes, that'd be the first thing I'd try to be sure you have the vacuum port and the signal port correctly id'd on the vacuum switch.

 

R

Rerun

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#19

• Aug 24, 2004

• #19

Alright, switched the tubes, i still get a slight vacuum, but not like it was. Car doesn't go crazy when I plug it into the EGR either. My idle is set to about 900 er so, might that be the reason for the slight vacuum?

 

R

Rerun

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#20

• Aug 24, 2004

• #20

Welp, local ford dealer has the part, I'm just going to buy it. If it doesn't fix it, then I'm going to button all this back up and chalk it up as a loss.