quick vacuum line question on a '88 engine (pics inside)
Thread Starter
Melting Slicks
Joined: Mar 1999
Posts: 2,830
Likes: 20
From: Las Vegas Nevada
EDIT: If the port in the top picture goes to the PCV valvem than I have it hooked up wrong (that is where I have the black hose from the port below the open port going) and I will need to know where the lower port (where the black hose is now) goes.
sorry for any confusion,
sorry for any confusion,
Racer
Joined: Aug 2004
Posts: 377
Likes: 1
From: Redmond Wa
I'm no expert on an '88 as mine is a '91 but they should be the same.
The top port in the top pic is your fresh air line that runs back to the valve cover. (part of the PVC system)
The lower port in the top pic is for the cooling system.
The open port near the distributor in the bottom pic is an air bleed line that connects to the cooling system.
Hope this helps.
Chris
The top port in the top pic is your fresh air line that runs back to the valve cover. (part of the PVC system)
The lower port in the top pic is for the cooling system.
The open port near the distributor in the bottom pic is an air bleed line that connects to the cooling system.
Hope this helps.
Chris
Thread Starter
Melting Slicks
Joined: Mar 1999
Posts: 2,830
Likes: 20
From: Las Vegas Nevada
Originally Posted by Grace91
The lower port in the top pic is for the cooling system
Originally Posted by Grace91
The open port near the distributor in the bottom pic is an air bleed line that connects to the cooling system.
Thanks Chris,
Racer
Joined: Aug 2004
Posts: 377
Likes: 1
From: Redmond Wa
Yes... now I see. You do have three. I am going from memory here because I'm still at work.
The top port is for Fresh Air (PVC system)
The middle one is for your fuel tank vapor canister purge valve.
The bottom one is for a cooling hose.
The coolant air purge line in the back is connected to one of those little hoses that runs to your between your surge tank and the radiator. This is where our model years may differ and someone with an '88 could probably be of more assistance.
Chris
The top port is for Fresh Air (PVC system)
The middle one is for your fuel tank vapor canister purge valve.
The bottom one is for a cooling hose.
The coolant air purge line in the back is connected to one of those little hoses that runs to your between your surge tank and the radiator. This is where our model years may differ and someone with an '88 could probably be of more assistance.
Chris
Thread Starter
Melting Slicks
Joined: Mar 1999
Posts: 2,830
Likes: 20
From: Las Vegas Nevada
Thanks a lot guys, **almost** done my basket case!!
If someone could elaborate as to exactly where the other end of the coolant air purge line connects to the cooling system that would be a big help.
thanks everyone,
If someone could elaborate as to exactly where the other end of the coolant air purge line connects to the cooling system that would be a big help.
thanks everyone,
Melting Slicks
Joined: Aug 2003
Posts: 3,403
Likes: 397
From: Lakeville MI
The coolant line should go to a tee fitting on the upper heater hose.
There is a flared tube with tube nut that attaches to the fiitting shown, then short length of rubber hose, then a small pipe, then another length of rubber hose that finally connects to the tee in the heater hose.
Currently mine is plugged at the manifold base, ever since my bigmouth/SR installation but someday I will re-connect the hose. I promise.
There is a flared tube with tube nut that attaches to the fiitting shown, then short length of rubber hose, then a small pipe, then another length of rubber hose that finally connects to the tee in the heater hose.
Currently mine is plugged at the manifold base, ever since my bigmouth/SR installation but someday I will re-connect the hose. I promise.
Last edited by tequilaboy; May 17, 2006 at 08:39 PM.
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Safety Car
Joined: Apr 2001
Posts: 3,525
Likes: 2
From: Houston TX
The rear port connects to an ~3" long piece of 5/16" hardline. This piece connects to an ~10" long piece of rubber line (isolation'flex purposes between the engine and chassis) that connects to another hardline that is secured to the top of the AC blower/heater box. This hardline connects into the small nipple on the rubber heater hose assy near the fenderwell on the '88.
This info is coming off of my factory '88, which differs only slightly from the '86-'87 and the '89.
Aaron
This info is coming off of my factory '88, which differs only slightly from the '86-'87 and the '89.
Aaron
Thread Starter
Melting Slicks
Joined: Mar 1999
Posts: 2,830
Likes: 20
From: Las Vegas Nevada
Originally Posted by tequilaboy
The coolant line should go to a tee fitting on the upper heater hose.
There is a flared tube with tube nut that attaches to the fiitting shown, then short length of rubber hose, then a small pipe, then another length of rubber hose that finally connects to the tee in the heater hose.
Currently mine is plugged at the manifold base, ever since my bigmouth/SR installation but someday I will re-connect the hose. I promise.
There is a flared tube with tube nut that attaches to the fiitting shown, then short length of rubber hose, then a small pipe, then another length of rubber hose that finally connects to the tee in the heater hose.
Currently mine is plugged at the manifold base, ever since my bigmouth/SR installation but someday I will re-connect the hose. I promise.
thanks everyone,
Safety Car
Joined: Dec 2004
Posts: 4,088
Likes: 0
From: Poop land
I completely eliminated my EECS and have not had a single problem. Think about those TPI conversion kits on pre-emissions cars. I didn't see any provisions for the EECS in the TPI harness retrofit kit! Anyways, the gas line that goes into the canister is just vented outside my left wheel well. I also put a check valve on it just to make sure water isn't sucked in. Only gas vapors will come out, nothing will go in. If you live in an area where there are no visual inspections, take it out. You are just asking for more places for vacuum to leak out. Finding vacuum leaks can be quite annoying and will make you feel like hitting your car when drivability issues arise.
RAGE ON!!!
RAGE ON!!!
Melting Slicks
Joined: Aug 2003
Posts: 3,403
Likes: 397
From: Lakeville MI
Blocking the small coolant passage seems to make it more difficult to get all the air out of the cooling system. It took me a few days of burping the rad to get it full. It lets steam/air escape from the rear of the intake.
The fitting in your picture threads into the base. You can remove the fiitting and plug with an 1/8" pipe plug. The fitting itself has an offset.
You may also need to remove the egr block off plate for clearance to remove the fitting.
I had to re-tap my base since I stripped a couple of threads the first time when re-connecting the flare nut. When I tightened the flare nut, it torqued the fitting right out of the base, so be careful removing it. After the stripping incident it was easier to just use a plug, plus I was itching to fire the car up. This was meant to be a temporary fix, but we'll see about that.
The fitting in your picture threads into the base. You can remove the fiitting and plug with an 1/8" pipe plug. The fitting itself has an offset.
You may also need to remove the egr block off plate for clearance to remove the fitting.
I had to re-tap my base since I stripped a couple of threads the first time when re-connecting the flare nut. When I tightened the flare nut, it torqued the fitting right out of the base, so be careful removing it. After the stripping incident it was easier to just use a plug, plus I was itching to fire the car up. This was meant to be a temporary fix, but we'll see about that.
Last edited by tequilaboy; May 17, 2006 at 10:55 PM.