my wifes car is a 95 gt mustang 5.0,having problems with the car idling,,when cold or warm the idle surges until the car quits,even when going down the road,,as soon as the rpms go back to idle position,it starts surging and then quits,tryin to save all the hassle of just changing sensors at random,just if anyone has had this problem b4,,could save me some cash and time,,,much appreciated,,o yea,,im getting no chk engine light either,,wouldnt one of these sensors set the warn light off?