Originally Posted by
skunk2racing97
that, or, ive had a TPS wear bad in one spot, and as its a standard potentiometer, the voltage will jump between the closest high and low spots.
+1.... if your car idles up then down up then down constantly, kinda like the car is breathing... its more likely to be your tps... your car wouldnt have a smooth constant idle if the IACV was bad.