When testing shows that your sensors are working fine, but driving issues keep happening, check all wiring between the sensor and PCM for breaks or electricity shorts. To solve persistent driveability problems, bring your car to a car dealer service area or experienced repair shop when no other issues are found. The CKP sensor sits on the front engine cover near a trigger wheel with 35 evenly spaced teeth and one space. It uses the engine's crankshaft to tell the PCM when the engine's #1 and #5 cylinders reach 60 degrees before the piston reaches TDC, or top dead center. The PCM takes information from the CKP sensor to control ignition spark timing and uses the engine speed data from the same sensor for the misfire monitor system. The PCM looks for problems with the CKP sensor, then codes them in the trouble code section. Check the 1.5-volt signal on one sensor wire with the engine off and ignition on, when you detach the CKP sensor. Disconnect fuel flow before starting, plug your voltmeter to CKP and see if engine cranking generates voltage pulses, keeping the voltmeter wires away from moving parts. To see if the engine runs properly again, replace the crankshaft sensor if the voltage test doesn't show any rapid changes. Take out the sensor following these steps: Shut down the engine, disconnect the electrical connection, unscrew the bolts holding the sensor, and pull it out of the front engine cover. When installing the new sensor, follow the same steps backward from how you removed it. Keep the wear tabs of your 2001 or later model sensor touching the damper before tightening the bolts. These tabs will wear down fast once the engine starts, making sure the sensor stays correctly aligned with the puller.