HELP w/85 vacuum lines
Thread Starter
Racer
Joined: May 2001
Posts: 407
Likes: 0
From: San Antonio TX
HELP w/85 vacuum lines
The 85 seems quite different than my 87, so I need some help. Is there a vacuum line diagram in the 85 service manual? If someone would be willing to fax or mail it to me, I'd be forever greatful :)
Or, please look at the following pictures and help me figure out where each of these belongs.
1. This is what I think is the EGR vac switch. One leg appears to go to the fuel charcol canister, the other to the EGR valve. My question is how and where does this mount??? It has an angled bracket but I can't see how it would mount where it looks like it should. Please tell me how this is on yours:
2. This looks like it should plug into the plenum vac adapter. One of the two located at the rear passenger side of the plenum. I've lost the label, so need confirmation.
3. The pcv valve goes to the side of the intake manifold, but I can see nothing that this Tee should be connected to. I have absolutely no idea and the tag fell off during the rebuild. I think this should have been on the driver's side, but there are no unused vacuum hoses there. Any idea?
:cheers:
Or, please look at the following pictures and help me figure out where each of these belongs.
1. This is what I think is the EGR vac switch. One leg appears to go to the fuel charcol canister, the other to the EGR valve. My question is how and where does this mount??? It has an angled bracket but I can't see how it would mount where it looks like it should. Please tell me how this is on yours:
2. This looks like it should plug into the plenum vac adapter. One of the two located at the rear passenger side of the plenum. I've lost the label, so need confirmation.
3. The pcv valve goes to the side of the intake manifold, but I can see nothing that this Tee should be connected to. I have absolutely no idea and the tag fell off during the rebuild. I think this should have been on the driver's side, but there are no unused vacuum hoses there. Any idea?
:cheers:
Le Mans Master
Joined: Jan 2001
Posts: 8,165
Likes: 1
From: Knoxville,TN TN
St. Jude Donor '03
Re: HELP w/85 vacuum lines (Topless87)
If that is from an L98 engine the first pic is mounted under the plemem on the driver side front part, you should be able to see where it is mounted. I had a 91 L98 and I had to replace to same tubing. Good luck. :flag
Advanced
Joined: Jul 2000
Posts: 98
Likes: 0
From: Saegertown Pa.
Re: HELP w/85 vacuum lines (Topless87)
Looking at my 85: Pic 1 is the EGR solenoid. It is positioned just as in your picture and mounts to the intake manifold next to the distributor on the passenger side. The left vac line goes to the EGR valve, the right goes to a tee under the throttle body with one side going to the bottom of the throttle body and the other to the fuel vapor canister. You should find a 2-wire plug there that connects to it. Pic 2: the open elbow plugs onto the rear of two nipples under the rear passenger side of the plenum. The front nipple is for the vac line going to the fuel regulator. The small line runs into a wiring harness behind the engine, the larger rubber hose runs to the vac reservoir behind the fuel vapor canister. Pic 3: neither PCV valve hose has a tee that looks like that. The passenger side connects to the side of the throttle body and the drivers side goes to a larger tee with one side going to the intake manifold and the other going to a steel line going to the fuel vapor canister solenoid (next to the canister). Hope this helps. :chevy
Burning Brakes
Joined: Feb 2003
Posts: 1,212
Likes: 0
From: OH
Re: HELP w/85 vacuum lines (TimV)
Looking at my 85: Pic 1 is the EGR solenoid. It is positioned just as in your picture and mounts to the intake manifold next to the distributor on the passenger side. The left vac line goes to the EGR valve, the right goes to a tee under the throttle body with one side going to the bottom of the throttle body and the other to the fuel vapor canister. You should find a 2-wire plug there that connects to it. Pic 2: the open elbow plugs onto the rear of two nipples under the rear passenger side of the plenum. The front nipple is for the vac line going to the fuel regulator. The small line runs into a wiring harness behind the engine, the larger rubber hose runs to the vac reservoir behind the fuel vapor canister. Pic 3: neither PCV valve hose has a tee that looks like that. The passenger side connects to the side of the throttle body and the drivers side goes to a larger tee with one side going to the intake manifold and the other going to a steel line going to the fuel vapor canister solenoid (next to the canister). Hope this helps. :chevy
Race Director
Joined: Aug 2000
Posts: 11,506
Likes: 4
From: Vancouver,Wa.
Re: HELP w/85 vacuum lines (TimV)
Looking at my 85: Pic 1 is the EGR solenoid. It is positioned just as in your picture and mounts to the intake manifold next to the distributor on the passenger side. The left vac line goes to the EGR valve, the right goes to a tee under the throttle body with one side going to the bottom of the throttle body and the other to the fuel vapor canister. You should find a 2-wire plug there that connects to it. Pic 2: the open elbow plugs onto the rear of two nipples under the rear passenger side of the plenum. The front nipple is for the vac line going to the fuel regulator. The small line runs into a wiring harness behind the engine, the larger rubber hose runs to the vac reservoir behind the fuel vapor canister. Pic 3: neither PCV valve hose has a tee that looks like that. The passenger side connects to the side of the throttle body and the drivers side goes to a larger tee with one side going to the intake manifold and the other going to a steel line going to the fuel vapor canister solenoid (next to the canister). Hope this helps. :chevy
Thread Starter
Racer
Joined: May 2001
Posts: 407
Likes: 0
From: San Antonio TX
Re: HELP w/85 vacuum lines (TimV)
It is positioned just as in your picture and mounts to the intake manifold next to the distributor on the passenger side
Thanks for everyones help. This is one of the last things and I'll finally be able to start this bad girl up :D
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Advanced
Joined: Jul 2000
Posts: 98
Likes: 0
From: Saegertown Pa.
Re: HELP w/85 vacuum lines (Topless87)
The orange area is it. (I was shining a light on it) Note the unplugged wire.
I IM'd my email address, let me know if you want a larger copy of the picture.
[Modified by TimV, 5:37 PM 3/29/2004]
Thread Starter
Racer
Joined: May 2001
Posts: 407
Likes: 0
From: San Antonio TX
Re: HELP w/85 vacuum lines (TimV)
You have mail
What the heck is it attached to down there :smash:
Is there something special about that manifold bolt? I don't have anything that would allow this to attach to that bolt. Very confused... and fed up :cry
Maybe this will help. See, in the picture, theres the back 2 intake manifold bolts. The bracket on the vacuum switch seems to hover just above these bolts, but I don't see how it could attach. The bolt hole behind there is for the distributor hold-down, not a likely candidate. Anyone have any help to offer?
[Modified by Topless87, 10:15 PM 3/29/2004]
What the heck is it attached to down there :smash:
Is there something special about that manifold bolt? I don't have anything that would allow this to attach to that bolt. Very confused... and fed up :cry
Maybe this will help. See, in the picture, theres the back 2 intake manifold bolts. The bracket on the vacuum switch seems to hover just above these bolts, but I don't see how it could attach. The bolt hole behind there is for the distributor hold-down, not a likely candidate. Anyone have any help to offer?
[Modified by Topless87, 10:15 PM 3/29/2004]
Burning Brakes
Joined: Oct 1999
Posts: 1,236
Likes: 91
From: Pittsburgh,PA
Re: HELP w/85 vacuum lines (Topless87)
You have to take the switch off of the bracket then use the manifold bolt to mount the bracket down then mount the switch to the bracket.
Or you can just let it set up on the manifold it will not hurt any thing the vac lines will keep it from moving around.
Dave
:flag
Or you can just let it set up on the manifold it will not hurt any thing the vac lines will keep it from moving around.
Dave
:flag
Cruising
Joined: Nov 2003
Posts: 12
Likes: 0
From: Ovid Mi
Re: HELP w/85 vacuum lines (Topless87)
2. This looks like it should plug into the plenum vac adapter. One of the two located at the rear passenger side of the plenum. I've lost the label, so need confirmation
Is this a check valve or an open valve?
Is this a check valve or an open valve?
Thread Starter
Racer
Joined: May 2001
Posts: 407
Likes: 0
From: San Antonio TX
Re: HELP w/85 vacuum lines (opel)
Bingo! Found it.
There is indeed a bracket that fits under those two back manifold bolts. It was one of the things that wasn't labeled and I couldn't see them fitting together until I saw one similar.
Thanks to everyone. Whew! :crazy:
There is indeed a bracket that fits under those two back manifold bolts. It was one of the things that wasn't labeled and I couldn't see them fitting together until I saw one similar.
Thanks to everyone. Whew! :crazy:
