Ported Vacuum switches
Thread Starter
Race Director
Joined: Oct 2000
Posts: 11,891
Likes: 3
From: Kansas City, MO ...I'd like to go fishing and catch a fishstick. That'd be convenient. - Mitch Hedberg
Ported Vacuum switches
I bought my car (1980) without any of them installed, now I need them to finish putting the stock intake,carb,emissions stuff back on. KENS80V was nice enough to email me a diagram for the engine vacuum hose routing. I see 4 TVS listed on it, which I'm guessing means Temp. Vac. Switch? When I look up ported vac sw. on Advanced Auto parts website, they list several that are for my car, but I noticed that between the different manufacturers, they all only have 4 different colored switches, blue, white, purple and black. If I need all four colors, can anyone tell me which one goes where and where they are installed?
The diagram lists:
Distr TVS
EFE TVS
EGR TVS
TVS (shown in the air cleaner)
The diagram lists:
Distr TVS
EFE TVS
EGR TVS
TVS (shown in the air cleaner)
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
This one will do for the first 2
http://www.ecklers.com/product.asp?p...0&dept_id=1177
This one for the EGR
http://www.ecklers.com/product.asp?p...9&dept_id=1268
Those control vacuume to the distributor, EGR and EFE valves based on engine temp
the one in the air cleaner is different, it controls vac to the little flapper in the air cleaner horn to direct hot air from the stove pipe on the exhaust manifold into the air cleaner to warm up the carb quickly.
I am looking for that one
http://www.ecklers.com/product.asp?p...0&dept_id=1177
This one for the EGR
http://www.ecklers.com/product.asp?p...9&dept_id=1268
Those control vacuume to the distributor, EGR and EFE valves based on engine temp
the one in the air cleaner is different, it controls vac to the little flapper in the air cleaner horn to direct hot air from the stove pipe on the exhaust manifold into the air cleaner to warm up the carb quickly.
I am looking for that one
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
Hmmm...the one oin the bottom of the air cleaner is drawn weird. I can't tell if the Yellow vac line goes thru it, but I wouldn't think so, doesn't make sense for it to.
Do you have the temp sensor in the bottom of the air cleaner? It should say AC on top and have 2 nipples on the bottom.
Do you have the temp sensor in the bottom of the air cleaner? It should say AC on top and have 2 nipples on the bottom.
Thread Starter
Race Director
Joined: Oct 2000
Posts: 11,891
Likes: 3
From: Kansas City, MO ...I'd like to go fishing and catch a fishstick. That'd be convenient. - Mitch Hedberg
Thanks. Can you tell me where they are installed? Is it EFE and Distr are in the thermostat housing and the EGR in the manifold?
What can I do to cover the hole in the air cleaner assembly since it looks like that switch is unavailable?
What can I do to cover the hole in the air cleaner assembly since it looks like that switch is unavailable?
Thread Starter
Race Director
Joined: Oct 2000
Posts: 11,891
Likes: 3
From: Kansas City, MO ...I'd like to go fishing and catch a fishstick. That'd be convenient. - Mitch Hedberg
Based on your description, I would say that the temp sensor in the bottom of the air cleaner is present.
One other quick question, what size is all of this vacuum tubing? I need to know what to purchase.
One other quick question, what size is all of this vacuum tubing? I need to know what to purchase.
Melting Slicks
Joined: Aug 2004
Posts: 2,934
Likes: 235
From: Oakbank Manitoba
Distributor TVS-ported vac and N/C (normally closed)
EGR TVS-ported vac and N/C (normally closed)
EFE TVS-manifold vac (non ported) and N/O (normally open)
EFE AC delco #212-72
Standard #PVS48
EGR AC Delco #212-352
Standard #PVS27
Dist AC Delco #212-12
Standard #PVS16
EGR TVS-ported vac and N/C (normally closed)
EFE TVS-manifold vac (non ported) and N/O (normally open)
EFE AC delco #212-72
Standard #PVS48
EGR AC Delco #212-352
Standard #PVS27
Dist AC Delco #212-12
Standard #PVS16
Last edited by KENS80V; Mar 3, 2008 at 05:02 PM. Reason: more info.
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Thread Starter
Race Director
Joined: Oct 2000
Posts: 11,891
Likes: 3
From: Kansas City, MO ...I'd like to go fishing and catch a fishstick. That'd be convenient. - Mitch Hedberg
Thanks guys.
Even with part numbers I can't tell which color switch is for which system.
Do I have this right?
EGR TVS goes in the intake next to the thermostat housing
EFE and Dist TVS go in the Thermostat housing
Even with part numbers I can't tell which color switch is for which system.
Do I have this right?
EGR TVS goes in the intake next to the thermostat housing
EFE and Dist TVS go in the Thermostat housing
Last edited by Ak. Mal; Mar 3, 2008 at 07:38 PM.
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
That sounds right. If your going thru all the BS to do this, go ahead and check Dr Rebuild, he has color correct vac line sets and diagrams for all that stuff, might even have the TVS for the air cleaner
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
Burning Brakes
Joined: Dec 2007
Posts: 952
Likes: 1
I bought my car (1980) without any of them installed, now I need them to finish putting the stock intake,carb,emissions stuff back on. KENS80V was nice enough to email me a diagram for the engine vacuum hose routing. I see 4 TVS listed on it, which I'm guessing means Temp. Vac. Switch? When I look up ported vac sw. on Advanced Auto parts website, they list several that are for my car, but I noticed that between the different manufacturers, they all only have 4 different colored switches, blue, white, purple and black. If I need all four colors, can anyone tell me which one goes where and where they are installed?
The diagram lists:
Distr TVS
EFE TVS
EGR TVS
TVS (shown in the air cleaner)
The diagram lists:
Distr TVS
EFE TVS
EGR TVS
TVS (shown in the air cleaner)
Racer
Joined: Feb 2007
Posts: 290
Likes: 0
From: Winchester CA
Did you ever find this one? What color was it and how many ports were on it?
Racer
Joined: Mar 2008
Posts: 428
Likes: 0
Two shown in the air cleaner
two shown in the thermostat housing.
Intermediate
Joined: Sep 2020
Posts: 31
Likes: 2
From: South Hadley Massachuettes
Intermediate
Joined: Sep 2020
Posts: 31
Likes: 2
From: South Hadley Massachuettes
can I get these photos please, I'm doing the same thing on my 1980 corvette L-82 automatic ,, I too need these switches, I have the purple in my intake & a red one sticking outta the side of my dual air cleaner & the AC one inside air cleaner,, I guess I'm in need of the others, please advise..
Le Mans Master
Joined: Mar 2004
Posts: 7,510
Likes: 1,519
From: Little Rock AR
can I get these photos please, I'm doing the same thing on my 1980 corvette L-82 automatic ,, I too need these switches, I have the purple in my intake & a red one sticking outta the side of my dual air cleaner & the AC one inside air cleaner,, I guess I'm in need of the others, please advise..
You probably already have this one.
Here is the color coded diagram in case it helps someone
Last edited by stingr69; Sep 18, 2020 at 02:52 PM.
