by 
The Curious Bag
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Produced from 1993 to 2004, Dodge's Intrepid family sedan has always had a choice of fuel-injected engines, all of which use camshaft position sensors. These sensors are a vital part of the computer's sensors array.
Purpose
The Camshaft Postion Sensor (CPS) tells the computer how the camshaft is oriented in the block. The camshaft controls opening and closing the engine's valves.
Function
The CPS is what is referred to as a hall effect sensor. The CPS uses an electrical induction coil to detect the passage of a series of small magnets located on the front of the camshaft.
Engine Controls
The engine's control computer must at all times be aware of the camshaft's position, as this dictates when it will inject fuel to an individual cylinder or fire its spark plug.
Location
The 2.7L engines have their CPs mounted on the front of the timing cover, and 2.0L/2.4L use a CPS mounted on the driver's-side cylinder head.
Failure
Failure of the CPS or its related components can lead to stalling, failure to start, "bucking" under cruise conditions or inconsistent acceleration.
Source:
Obrador.com: Dodge Intrepid Diagnosis
Dodgeforum.com: CPS Discussion
Sensorsmag.com: Cam Position Sensors
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