Yep, that's the gas filter (see the schematic; it's labeled there). The base of it is threaded into the intake manifold and sees manifold vacuum. My '77 setup doesn't have a temperature sensor anywhere; maybe the California models did. I think '78 and newer did as well; my carb has a temperature sending unit on it, I think for the carb cooling fan.
"Stay the Trail," "Tread Lightly," and "Leave No Trace" ethics
Rising Sun Bio
2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering,
soon to lose the Sanden OBA
to go back to factory emissions
Limited TRD 2UZ-FE FOR SALE SOON
Up next: Something that makes a funny whistling noise...