Every once in a while I will have some idel complications. It will idle up and down between around 500-1200. Anyone know why exactly? Throttle Positioning Sensor? If so How do I fix it. It only does it once in a while, So it can't be timing can it? Any help would be great;y appreciated...

 

check your vac lines for any leakes
check to see if throttle cable is loose
try tightening the TB screw
could be your iacv