Hey all, this is my first thread on here, so give me slack lol. I've searched where I could think to do so, & have yet to find anything. I've got a "Two-in-one" vacuum coming from my thermostat area that I can't quite figure out what it goes to, & what connects to it. I will include a pic, any help would be great.

Also, I know this is not carb related, but thought I knock two birds with one stone: I've also got an electrical connection coming from the back that I can't find a connector for, which I will also post a pic of.

^-------This is all in an '84 Z28 5.0

 

you gotta register...add your car and go to repair guides

http://www.autozone.com/autozone/rep...00c1528008e871

it is more than likely for you egr valve. Vacuum goes to one side of it and when it reaches a certain temp it opens up and sends a vacuum signal to the egr to open it up. tvs

the plug is hard to see the wiring colors my guess would be ac compressor.

 

The first should be the TVS for the EFE (Early Fuel Evaporation) valve that is mounted in the passenger side exhaust manifold. It closes the valve under cold-weather operation and forces exhaust gas back through intake manifold passages to the other side. Warms the intake air. The valve and lines going to it don't stand up to too many years. You should see a small, metal vacuum line running along the pass side head, down to the valve if it hasn't been removed.

The other, larger TVS on the manifold operates the evap system.

The second looks to the the AC clutch switch?