Originally Posted by DantheMan72
Ok...when i turn the key, it makes the usual sounds of turning over; gauges and lights are all normal, just not sparking, i.e. starting.
This is most commonly caused by a faulty Crankshaft Position Sensor (CPS) on the transmission bell housing. The fault may be in the sensor itself, in the sensor connector/wires, or in the circuit shared by the other sensors.
Naturally all your tune-up parts should be new within the last 30,000 miles.
Cheap sensors from Advance/IdiotZone/PepBoys have been failed or out of specification right out of the box. I suggest testing the CPS and inspecting its wires. Genuine Jeep and NAPA have proven to be the best quality parts for sensor replacements.
Crankshaft Position Sensor Connector (CPS/CKP)
TESTING PROCEDURE 1991 – 2001 4.0L H.O. engines
1. Near the rear of intake manifold, disconnect sensor pigtail harness connector from main wiring harness.
2. Place an ohmmeter across terminals B and C (See Image). Ohmmeter should be set to 1K-to-1OK scale for this test.
3. The meter reading should be open (infinite resistance). Replace sensor if a low resistance is indicated.
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