Car not starting or turning over indicates towards multiple possibilities.
It can be issue with battery or weak battery. But if battery checks out ok, then
it can be starter issue or faulty alternator or problem with low fuel pressure
or no spark at spark plugs due to dirty spark plugs or faulty
ignition coil or injectors getting cracked or dirty and needs to be cleaned. To confirm the problem, the basic troubleshooting is required. Click this link below and follow the troubleshooting:------ http://technoanswers.blogspot.in/2012/02/car-starting-issues.html --------- This will help. Thanks.
SOURCE: Jeep Hesitates. P0303 code
Check the cylinders Commpression. over 115 psi is good, 120 psi is normal.
SOURCE: 96 jeep grand cherokee 4.0
change the computer .... PCM get a used one it fixed mine had same problem
SOURCE: 2001 jeep grand cherokee no start, no cam signal or ASD control from pcm
IF YOU PULL OUT CAM SENSOR YOU HAVE TO PUT A TOOTH PICK IN THE TWO HOLES ON THE TOP AND THEN PUT IT BACK IN AND FACE IT TO THE BACK OF THE ENGINE.KING OF 4.0
SOURCE: location of cam sensor 2003 jeep grand cherokee v8
Answer
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REMOVAL - 4.7L
The Camshaft Position Sensor (CMP) on the 4.7L V–8 engine is bolted to the front/top of the right cylinder head (CMP Location—4.7L Engine).
It is easier to remove/install sensor from under vehicle.
Raise and support vehicle.
Disconnect electrical connector at CMP sensor (CMP Location—4.7L Engine).
Remove sensor mounting bolt (CMP Location—4.7L Engine).
Carefully twist sensor from cylinder head.
Check condition of sensor o-ring.
See picture for sensor location.
Testimonial: "that is just what i needed thanks"
SOURCE: 96 jeep grand cherokee limited
I could be the CKP (crank sensor), but it could also be several other factors including the TPS. The correct way to start a diagnosis would be to see if any trouble codes are stored in memory. I'm assuming all basic ignition components are ok ; spark plugs, etc.
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