Oops my bad. I used the word "vacuum"; meant crankcase/valve cover vacuum as it is pulled by the throttle body into the air intake/filter. And that is pulled from the FPR via that tiny 'picollo' PCV tube. Yep, high throttle vac is at idle. FPR is fine, but the rubber nipple is not. Need to fix that.

OK, about vacuum: The ECONOMY IP needle points to what for which vacuum condition?

Also: When at idle & throttle plate closed, then the only air comes through the IACV?

__________________
BnObob (for the fallen flag railroad.)
Artic "Snow" White 1989 300E, 124.030
w/ M103 engine, and 106K orig miles.