I have an 03 dodge neon, engine 2.0. Sometimes it'll start right up, and sometimes it takes a few seconds! Like many problems we all have...i need help to try and fix this issue myself. I put a new battery, coil pack, and spark plugs in it. I took it to a mechanic and it is the cam and crank sensor. If anyone knows how to replace these parts....

Please tell me how!!!!!!!!

I know where nothing is located....

 

CAMSHAFT POSITION SENSOR DESCRIPTION
On 2.0/2.4L engines the camshaft position sensor
attaches to the rear of the cylinder head. On 1.6L
engines it is mounted on the front side of the cylinder
head. The PCM determines fuel injection synchronization
and cylinder identification from inputs
provided by the camshaft position sensor (Fig. 3) and
crankshaft position sensor. From the two inputs, the
PCM determines crankshaft position.

REMOVAL - 2.0L
The camshaft position sensor is mounted to the
rear of the cylinder head (Fig. 9).
(1) Remove brake booster hose and electrical connector
from holders on end of cylinder head cover
and reposition.
(2) Disconnect electrical connectors from camshaft
position sensor.
(3) Remove camshaft position sensor mounting
screws. Remove sensor.

INSTALLATION - 2.0L
The camshaft position sensor is mounted to the
rear of the cylinder head (Fig. 9).
The target magnet has two locating dowels that fit
into machined locating holes in end of the camshaft.
(1) Install target magnet in end of camshaft.
Tighten mounting screw to 3.4 N·m (30 in. lbs.)
torque. Over torquing could cause cracks in magnet.
If magnet cracks replace it.
(2) Install camshaft position sensor. Tighten sensor
mounting screws to 9 N·m (80 in. lbs.) torque.
(3) Place brake booster hose and electrical harness
in holders on end of valve cover.
(4) Attach electrical connectors to camshaft position
sensor.

 

CRANKSHAFT POSITION SENSOR DESCRIPTION
The crankshaft position sensor mounts to the
engine block near the starter (Fig. 13).
The PCM uses the Crankshaft Position sensor to
calculate the following:
² Engine RPM
² TDC number 1 and 4
² Ignition coil synchronization
² Injector synchronization
² Camshaft-to-crankshaft misalignment (Timing
belt skipped 1 tooth or more diagnostic trouble code).

REMOVAL - 2.0, 2.4, 2.4L TURBO
The Crankshaft Position Sensor is in the front of
the engine block just under the starter motor (Fig.
17).
(1) Disconnect the negative battery cable.
(2) Raise vehicle and support.
(3) On 2.4L SRT-4 remove the lower inner cooler
hose from the metal tube.
(4) Remove the Structural Collar (Fig. 18), refer to
the Engine, Structural Collar Removal and Installation
section.
(5) Unlock and disconnect the electrical connector
to the crankshaft position sensor.
(6) Remove the crankshaft position sensor bolt.
(7) Remove the sensor (Fig. 19).

INSTALLATION - 2.0, 2.4, 2.4L Turbo
(1) Check o-ring for damage and lubricate the
o-ring with engine oil before installing sensor (Fig.
19).
(2) Use a twisting motion when installing the sensor.
(3) Install and tighten the crankshaft position sensor
bolt and tighten to 9 N·m (80 ±15 in. lbs.).
(4) Connect and lock the electrical connector to the
crankshaft position sensor.
(5) Install the Structural Collar, refer to the
Engine, Structural Collar Removal and Installation
section (Fig. 18).
(6) On 2.4L SRT-4 install the lower inner cooler
hose to metal tube and tighten clamp.
(7) Lower vehicle.
(8) Connect the negative battery cable.