Four more engine parts that can use names and purposes---Arrow # 1 is pointing to the greeny-black object- that I am sure is not supposed to be that color-
i think 3 is the tps and i think 4 is the purge control valve, 2 looks like its the injector wiring harness. i cant tell where 1 points. it can either be the front cover or one of the coolant hoses.