I thought about that but those pumps are about 1 qt in 45 seconds.
The accumulator as I understand is only to hold pressure for an hour or so.
Try this-
Remove top of airfilter.
In the morning (cold) have someone start the car.
As soon as the round sensor plate drops,and the car fires, slightly hold it there and see if the car doesn;t idle fine.
Tried that two mornings and it worked.
Now, pulled and tested the Idle air control valve with 12v at the battery and it slams open and shut.
If you are worried about the rubber hoses being brittle, just disconnect the plug and run two 16 ga wires from the pos and neg on the battery and touch the terminals.
Apparently the hose to the intact manifold requires much patience and dexterity to rplace if brittle and cracked.
From the front, pos on the left terminal.
You will hear it open and close as you apply and remove voltage.
Will let you know when I figure the rest out..