1. Faulty ignition coil: The ignition coil is responsible for generating the high voltage needed to create a spark. If the coil is faulty, it won't be able to generate enough voltage, or any voltage at all, which would result in no spark. Check the coil for any visible signs of damage, such as cracks or arcing, and replace it if necessary.
2. Faulty spark plug wires: The spark plug wires carry the high voltage from the ignition coil to the spark plugs. If any of the wires are damaged or loose, they won't be able to deliver the voltage properly, resulting in no spark. Check the wires for any signs of damage, such as cracks, cuts, or loose connections. Replace any damaged wires.
3. Faulty spark plugs: The spark plugs are responsible for creating the spark that ignites the fuel mixture in the engine. If the spark plugs are worn out or damaged, they won't be able to create a spark, or may create a weak spark, which would result in no start or rough running. Check the spark plugs for any signs of wear or damage. Look for worn electrodes, eroded or damaged insulators. If necessary, replace the spark plugs.
4. Faulty ignition control module (ICM): The ICM is responsible for controlling the timing and duration of the spark. If the ICM is faulty, it won't be able to properly control the spark, which would result in no spark or intermittent spark. Check the ICM for any visible signs of damage. If the ICM is damaged, replace it.
5. Faulty crankshaft position sensor (CKP): The CKP sensor provides the engine control module (ECM) with information about the position of the crankshaft. If the CKP sensor is faulty, it won't be able to provide the ECM with the necessary information, which would result in no spark or intermittent spark. Check the CKP sensor for any visible signs of damage, such as cracks or loose connections. Replace the sensor if necessary.
It's important to note that these are just a few of the possible causes of a no-spark condition in a 1999 Chevy Cavalier 2.2. If you're unable to identify the cause of the problem yourself, it's best to have the vehicle diagnosed by a qualified mechanic.
