How does a bad ignition coil act?
As the ignition coils are among the ignition system’s most vital components, an issue can cause spark to be compromised, which can quickly lead to performance issues. Faulty coils may cause the vehicle to experience misfires, a rough idle, a loss in power and acceleration, and a reduction in gas mileage.
Where are ignition coil packs on GM 3.8L?
If you do need to test just the ignition coil packs sitting on top of the ignition control module (ICM), here’s the article for you: How To Test The GM 3.8L V6 Ignition Coil Packs. For a list of all of the 3.8L articles in this site, check out the index: GM 3.8L Index Of Articles.
Which is CKP signal does the GM 3.8L ignition module use?
One CKP sensor is called the 3X CKP Sensor and the signal it creates is called the Sync 3X CKP Signal and the other one is called the 18X CKP and its signal the Crank 18X CKP Signal. As stated before, both of these signals are critical for the ignition control module to start the car (to start sparking the ignition coils).
What do I need to know about ignition control module?
This test will help you to pinpoint the problem to the ignition control module (ICM) or the crankshaft position sensor as the source of your car’s no start condition. Before starting the tests you must first check and verify that there’s NO SPARK present at any of the coil towers.
If you do need to test just the ignition coil packs sitting on top of the ignition control module (ICM), here’s the article for you: How To Test The GM 3.8L V6 Ignition Coil Packs. For a list of all of the 3.8L articles in this site, check out the index: GM 3.8L Index Of Articles.
One CKP sensor is called the 3X CKP Sensor and the signal it creates is called the Sync 3X CKP Signal and the other one is called the 18X CKP and its signal the Crank 18X CKP Signal. As stated before, both of these signals are critical for the ignition control module to start the car (to start sparking the ignition coils).
This test will help you to pinpoint the problem to the ignition control module (ICM) or the crankshaft position sensor as the source of your car’s no start condition. Before starting the tests you must first check and verify that there’s NO SPARK present at any of the coil towers.