What causes a SD 302 motor to hunt for idle when warmed up? I have replaced the ACT, IAC valve, O2 sensor and it still hunts for idle on my 92 F-150 Truck? Does the Pcm have to match the camshaft and everything else? Where does the orange ground wire come out of on the engine harness?
See "Help me create the Surging Idle Checklist" at http://forums.stangnet.com/showthread.php?t=698148
for help with your idle problems. The first post contains all the updates to the fixes. I continue to update it as more people post fixes or ask questions.