: 1983 DeVille egr question with pictures

05-19-10, 12:19 PM
am i placing the egr vacuum lines in the right area?
http://img36.imageshack.us/img36/6910/dsc01212bi.jpg (http://img36.imageshack.us/i/dsc01212bi.jpg/)
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Where do i connect the vacuum hose to this is this a efe check valve
does it go here look at picture?
http://img153.imageshack.us/img153/1866/dsc01248l.jpg (http://img153.imageshack.us/i/dsc01248l.jpg/)
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05-19-10, 12:34 PM
I can't tell you for sure, but that doesn't look like a place to plug a vacuum line in (on the second picture). I'm not sure where it would go, but I don't recall seeing any tips like that on any vacuum system I've seen.

The good news is, You've asked in the right place. there's a 99% chance that someone in this forum knows the answer and will provide you with help!
What I will say is that there should be a vacuum diagram under your hood somewhere. I know on these old cars sometimes it's not there any more, though.

05-19-10, 01:40 PM
thanks for trying to help me out but the sticker it had fell off

05-19-10, 03:53 PM
I have the 84 FSM at home, and an 84 with the sticker that is my mother's. If someone else doesn't post it, I will track it down for you.

Angry Matt
05-19-10, 08:55 PM
Is there a black box with 6 vacuum ports on top of the left facing valve cover? I may be thinking of another motor, but I thought the 4100 had a vacuum solenoid switch for the egr.

05-19-10, 10:21 PM
Is there a black box with 6 vacuum ports on top of the left facing valve cover? I may be thinking of another motor, but I thought the 4100 had a vacuum solenoid switch for the egr.

look at the 2nd pic thats the only thing that comes close to a black box it has i think like 4 or 5 vacuum ports on it cant check right now to dark outside
and in the first pic iam holding the egr solenoid

Angry Matt
05-19-10, 10:26 PM
Ok, I must be thinking of a different engine. The solenoid I was picturing has all the ports on the front, two on top and four on the bottom, sorry, nevermind.

05-19-10, 10:41 PM
^You were thinking of the Solenoid that controls the EGR on a 307.

Do you have a vacuum/emissions label on the radiator support? I forget if the 4100 cars got them, but if you do, post a picture of it.

05-19-10, 11:17 PM
FSM is in mom's car. I will see it on Saturday...

05-20-10, 04:35 AM
the 2nd pic looks like the valve of the heater core in my opinion.....

05-25-10, 09:43 PM
any help

05-25-10, 10:39 PM
In any case the vacuum line connected to the EGR valve (looks like WWII Russian T34 tank) should go to the EGR solenoid and from the EGR solenoid to the intake or throttle body.

05-25-10, 11:57 PM
here you go:

and here are some service bulletins I found for 4100 owners while searching:

05-26-10, 01:53 AM
the 4100 vacuum diagram i see on this http://www.cadillacforums.com/forums/ht4100-4-1-4-5-4/175640-4100-vacuum-diagram.html looks diffrent then what is on my car going to check tomorrow and see if it is the same setup. i also found a other poster on here saying that the 4100 vacuum diagram was missing some stuff but he didnt post the 4100 vacuum diagram he was looking at couldn't pm him becaues of some rule about spam. i wanted to ask him some question about it

05-26-10, 03:20 AM
I think the small black unit you hold is the egr solenoid.The egr valve I believe is the goldy color circular unit underneath --correctly connected to the solenoid.

05-28-10, 08:01 PM
i know its a egr solenoid i found out what connects to the valve thingy thanks to somebody in layitlow forums but i still need help for the egr vaccum lines