Vacuum line/egr system question on a '95

[kevtar658]

Ok, I'm stumped on this one. First of all according to haynes manual and my eyes my car does not have a egr boost sensor, this is on 96 and later cars only (I'm guessing an obdII thing) so do I need to plug that portion of the Vacuum distribution block?
Second, I have two hoses coming off of the EGR solenoid valve (it sits on the passenger side of the engine between the strut tower and the supercharger) one is marked with red squares the other with blue squares. Where do I hook these up? Do I need to tee them into the EGR vacuum hose somehow?
Please help.
Thanks,
KT

[Mark]

Follow the link to this thread. I bookmarked it when I was doing my install....

http://www.fastforwardsuperchargers.com/forum/showthread.php?t=275

[bogey]

To confirm:

The side tap on the EGR valve goes to vacuum.

The top tap (red) goes to the fender sensor.

The blue from the fender sensor goes to vacuum.

I ended up rotating the EGR valve 120 degrees so the connector points to the rear. There are three screws on it. This allows you to rotate the top to a more conveinent angle.

[tony soprano]

Follow the link to this thread. I bookmarked it when I was doing my install....

http://www.fastforwardsuperchargers.com/forum/showthread.php?t=275Heh! I bookmarked that same link when I was doing my install too.

I have a question related to the EGR valve and the two vacuum lines that come from the EGR solenoid valve that's mounted on the inner passenger side fender - it's the solenoid that has the two vacuum lines, one marked with red dashes, the other with blue dashes. I have the red dash vacuum line plumbed to the EGR valve and the blue dash line plumbed to the VDB.

Now here's where things get kind of odd - on my first start-up while checking for fluid and vacuum leaks, I also checked to make sure the EGR pipe wasn't touching anything. Specifically, I was making sure there was adequate clearance between the stainless EGR pipe that comes with the kit and the fuel-inlet hose. I noticed there wasn't much heat at all coming from the area of the EGR. Ultimately, I ended up touching the EGR adapter block and it wasn't hot at all. It was cool enough for me to put my finger on the block.

That didn't seem right to me so I pulled off the red dashed vacuum line off of the EGR valve and there was no vacuum from the line while the car was idle. Does the red dash vacuum line only provide vacuum once the engine reaches a certain RPM, or should there always be vacuum from that line? The EGR valve should be open at idle - it should be extremely hot, even at idle, right?

[bogey]

I believe the "sensor" on the fender is actually a valve that is opened by the ECU which will allow vacuum on the red line. I don't know exactly what conditions are necessary for the valve to open, but warm up makes sense. I will check the factory service manual to see if it has details.

[bogey]

Officially:

The EGR operation is stopped when coolant temps are below 131F.

With a warm engine, the EGR is closed during idle, deceleration, high speed, and heavy load.

It is partially open during acceleration and between 131-140F.

Under "Other" conditions, a signal from the EGR valve position sensor controls the amount of open.

I don't know what "Other" condition really is because I am usually in one of the modes!

I don't believe this system will affect drivability unless it is stuck open. Stuck closed, will only affect NOx emissions.

[tony soprano]

My thanks yet again Bogey. :cheers2: