There is a procedure to check it. I think riotwarrior did a tech 101 on it. You measure the free travel. I think 5/8" is what the acceptable max free rotation is.
The one at the very front, kinda tucked beneath the thermostat gooseneck? That's the one for the cold idle/advance. E8TZ-9E939-A . Best price I found was at Autonation Ford White Bear Lake.Does anyone happen to know the part number for the temp sensor where that 2 prong plug connects to? The taps on the sensor are bent on mine.