There are a number of common symptoms of a bad crankshaft position sensor (CKP) that can help you determine if your sensor has failed, including engine misfires, rough idling, stalling, or hard starting. If you are experiencing problems like these, you might need to replace your crankshaft position sensor . The 3X CKP sensor's signal is used by the fuel injection computer to start injecting fuel. Here are some more specifics: The 24X CKP sensor is connected directly to your Chevrolet (Pontiac)'s fuel injection computer and bypasses the ignition control module. The fuel injection computer uses the information from the 24X CKP sensor to calculate Inductive (magnetic) CKP Sensor May have one or two wires Mounts in front of a rotor or reluctor wheel Produces its own AC voltage signal Figure 1 The crankshaft position sensor (orange arrow) is relatively easy to get to. However, like the camshaft position sensor, the wire harness connection is hidden underneath the intake manifold. Remove the intake manifold to replace the sensor; or, if you have skinny arms, you may be able to reach in there if you remove the oil filter housing first. In some cars, the sensor is installed close to the main pulley (harmonic balancer) like in this Ford in the photo. In other cars, the sensor could be installed at the transmission bell housing, or in the engine cylinder block, as in the photo below. In the technical literature, the crankshaft position sensor is abbreviated to CKP. Start the engine of your car. Make sure that the engine oil and coolant levels are optimal; the latter being at 158F. Now, shut down the engine for 10 seconds. Select CASE Learn on your scanner. This is going to prepare the crankshaft position sensor for the learning procedure. The transmission should be in Park. .

what is a ckp sensor