my car was doing the funny idle when i push in the clutch the idle would go from 600 to 13 or 1400, so i went to replace the iac on my 2000 gt and the one i bought does not have the extra air inlet tube on it that the factory one has wich goes into my kn air intake system. the one i bought has it sealed off and thats the only one they list for my car, i tried it on my gt and sealed the air tube from the k@n air intake tube and it ran crappy. so i put the old one back on. the part number is a gp sorgesen 77910119 has anyone ever had this problem when they replaced theres, i got mine at advance auto, or do i have to get it from ford?