my situation was with an '89 carbed kick, and the carburetor is slightly different, but i believe the system works the same. the chilton i had was way to sketchy and i sprung for the factory(the section on the carburetor and emmissions was a supplemental) manual.
i never would have figured it out otherwise.
also need a good VOM.
if you disconnect the high altitude sensor(HAC) and bridge the terminals, it should think it's "high", but it would be best to be able to check all those sensors and switches to confirm function.
all that stuff(o2, temp., throttle switches, etc.) works together thru the ECM(computer)to control fuel mixture.
sorry i can't be more help.
