Throttle response problem, aggravated by air conditioning

[maximvsv]

Even since I got my SVX, if I have the climate control in Auto or Defrost modes, and the system activates the air conditioning, I have a massive throttle response lag. Here's another twist to it...it is especially bad from (1) a standing start or (2) a sharp turn.

I have been reading about the "surge" symptoms threads, and I don't think this is an aspect of the same thing (though I do get little surges when the car's idling in gear at stoplights and such).

When the climate control is off or on Vent, the lag is not gone, but is diminished to where it is no longer a danger to entering traffic areas.

Does anyone know if there is a way an impaired A/C compressor could schiz the throttle position sensor or a vacuum line in a way that would keep the throttle from opening even when the pedal is well and truly floored?