Lets hope it is not the fuel pump! You were correct, the idle air control runs whenever the ignition is on and does take a while to turn itself off - no big deal.
Turn the key to pos II and listen for the fuel pump prime. If you do not hear the pump run for 1-2 secs, check the fuel pump relay #103 in the fuse box.
http://www.brickboard.com/AWD/index.htm?id=1265592
Otherwise, if the fuel pump does not run when jumped, you will need to take up the carpeting in the rear and open the left inspection cover and jiggle the wires to the pump.
Klaus
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