my eyes hurt from trying to search and read about the different 'code 34' topics. but none seem to relate to my car!

I have a 1984 firebird v8 305.

I get the code EVERYTIME I come off the freeway. It seems like im getting the code everytime I dont get a lot of air in the car. because freeway driving i dont get the code.... I replaced the MAP sensor and cleared all the codes. yet it still comes up!! The vaccum has pressure. i took it off with the car running and i can feel it sucking. the wires look ok.. im so confused.




Another question i have. that i couldnt find an answer too. I have the right hood. But i was wondering does the air duct that connects to the hood connect to my car?? me nor the people at the pontiac dealer know where it plugs into.


WHAT IS THIS!? AND WHERE DOES IT GO!?

 

What is the TPS voltage at the warm closed throttle position?