Saab Repair: 1996 900S Conv - Engine Missing At Idle, throttle position sensor, canister purge valve

Question
QUESTION: I have an engine misfire at idle, above idle it runs perfectly. My check engine light is on with the code for "throttle position sensor" but this was on for weeks before the misfire started. I have checked plugs, wires etc. Any help would be very much appreciated, Thank you

ANSWER: Check for vacuum leaks,broken vacuum hoses. Pay attention to the hose that runs to the rear of the throttle housing from the evap canister purge valve.You may wish to clean the throttle housing and AIC valve as well.

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QUESTION: Please forgive my ignorance but what is a AIC valve?
I found one vacuum line that was broken and cleaned out the throttle housing but the issue has not gotten any better!

Answer
Idle Air Control valve. It is located by the throttle body on the passenger side of the engine. It is 3-4 inches long and has 2 large hoses going to and from it. You can try to clean this out with carb cleaner and see if that helps. What kind of plugs are in it?