i have a 1990 audi 80 quattro, heres whats going on, I go out to my car when the car is cold i start it and it idles very low and rumbles like it has a lumpy cam if i rev it and it stalls or if i try to drive it i can have the gas all the way to the floor and it jerks forward then goes, i put the clutch in and it stalls. it takes about 10 mins for it to warm up so i can drive it. now i thought it was the iacv but when i found it i was dumb founded, it has one tube that comes from the intake that goes to the iacv then the other leads to the intake manifold, i dont really no anything about audis but i cleaned it out and it hasnt really changed any ideas as to how i can get my car to idle?