* No Start: This is the most common symptom. The ECM needs the CKP signal to know when to fire the spark plugs and inject fuel. Without it, the engine won't start.
* Intermittent Starting/Stalling: The engine might start sometimes but stall unexpectedly, especially when idling or under load. This is because the signal from the sensor is unreliable.
* Rough Running/Misfires: A faulty CKP sensor can lead to misfires because the ignition timing is incorrect. The engine will run roughly and may lack power.
* Check Engine Light (CEL): The CEL will almost certainly illuminate with diagnostic trouble codes (DTCs) related to the crankshaft position sensor circuit.
* Reduced Engine Performance: The engine might be sluggish, lack power, and have poor fuel economy.
In short, a bad crankshaft position sensor severely impacts the engine's ability to run smoothly and reliably. It's a critical component for proper engine function in your 2000 Jeep Cherokee.
