P0320 FORD -

Question

Mercury sable runs till it get warm and quits

Answer 1

P0320 Erratic ignition

This code is also known as ignition/distributor engine speed input circuit malfunction,,when the engine get warm and quit this tell you that a sensor  is failing,due to resistance increase, This is also known as who goes out cam or crank? If you have a engine surge or stall at idle and able to restart, replace the cam positon sensor ,you dont have to repalce the whole body just the sensor,thats if you are equipt with a hall-effect cam sensor,There are 2 types of cam sensor one is hall -effect the other is variable reluctant.