more info on hestitation, powerloss. did it again today Options

[mk7celica]

Well I had another thread on this problem and I thought it was my spark plug wires that I just installed because the problem seemed to start right after i did the plug install. Well I thought it was the walbro fuel pump because it gets so loud and the sound keeps changing and getting higher. The problem seemed to be gone until today I floored it to get over and sure enough the hesitation and power loss & jerking began again. Then I drove it for 3-5 seconds and it stopped. So I poped the hood and looked at the engine, wires plugs sensor connections ect, and I found that if I touch my a/c idle control valve and the vacum lines that go to it the car starts to die and then kills. I am thinking when I give wot the engine moves and this is picking up the ac idle valve and the vacum lines like when I touched them with my hand and it killed the same is happening when the engine moves. Any one know about a a/c idle control valve and the vacum lines. Mine has a air sound coming out of it. Its the bolt and spring with vacum lines going to it, not sure the correct name of it

[mk7celica]

The a/c is off when I do this I only use the a/c once in a while or long trips. Is it suppose the have a loud air sound coming out of the valve? And When I turn the ac on when I am driving normal the engine seems to lose power but i guess its normal when a ac is on. Do I need hose clamps on all the vacum lines on the ac valve? there are none on it and the valve is rusty bad