Where and what is the camshaft position sensor?
the camshaft position sensor is used to synchronize the fuel injection system with the opening of the intake valves.
It synchs the cam shaft location with the crankshaft location
It can be in a distributor or it can read a tone wheel on the cam shaft.
Here's the technical description of the p0340-344 diagnostic trouble codes: P0340 Camshaft Position Sensor Circuit Malfunction P0341 Camshaft Position Sensor Circuit Performance P0342 Camshaft Position Sensor Circuit Low Input P0343 Camshaft Position Sensor Circuit High Input P0344 Camshaft Position Sensor Circuit Intermittent Obviously, the camshaft position sensor (CPS) is the probable source of the problem. See "Related Questions" below for more about the CPS
CAMSHAFT POSITION SENSOR The camshaft position sensor is located in the distributor on all 3.9L V-6 and 5.2/5.9L V-8 engines Camshaft Position Sensor REMOVAL Distributor removal is not necessary to remove camshaft position sensor Remove air cleaner assembly. Disconnect negative cable from battery. Remove distributor cap from distributor (two screws) Disconnect camshaft position sensor wiring harness from main engine wiring harness. Remove distributor rotor from distributor shaft. Lift the camshaft position sensor assembly from the…