What are these few things

[jdurant]

I've had this blazer apart for so long, I'm having trouble remebering how it all goes back together. It's been one thing after another this week. Instead of making progress I was working backwards. Anyway...

I think this is the map sensor. Tell me if I'm wrong. I can't find it on any diagram.

This is what I am mostly concerned about. I think it is the deceleration valve. But may be wrong. From what I understand a vacuum line should connect from it to the plunger thingy in front of the main linkage on the carb. But there is no place on the plunger thingy to attach a vacuum line. It is supposed to hold the throttle open slightly during deceleration to avoid overfueling. It was not hooked up at all when I took it apart. it was just sitting by the thermostat housing.

The wiring harness from the ?decel valve? connects to this (not connected in the pic)thing and connects to another harness inside the plastic flap cover above the master cylinder and then goes to the firewall. But the harness isn't right and some of the wires are cut. So I am trying to piece it back together, but I need to atleast know what this is called and hopefully it's purpose. Some wiring specs/diagram would be great too.

Thanks in advance

[heavychevy79]

The first thing is emissions equipment for sure but I've never asked what it was because they are always disconnected anyway.

The middle 2nd one looks like the A/C idle speed bump up servo, that raises
rpm while the A/C is on.

Never seen the last one.

Is it a 86 model?

[jdurant]

It's an 82 model.

[Jonboy]

The first pic (above the A/C box) is the vacuum operated solenoid for the TCC. It senses engine vacuum, and energizes the TCC. The second one does look like the A/C "kicker" solenoid, as mentioned above. I am at a loss on the third one also.