Crankshaft Position Sensor - 1990 300ZX

The crankshaft position sensor (CPS) for the 1990 Nissan 300ZX, part number 23731-30P00, is crucial for accurate engine timing and performance. When sourcing this part, consider that it is interchangeable with models from 1989 to 1996, all featuring the VG30DETT engine. During installation, ensure that the sensor is aligned correctly as improper alignment can lead to engine misfire or stalling. Common failures include sensor degradation due to heat exposure, so inspect for any signs of wear or damage. When checking a junkyard for a replacement, look for the casting number DENSO 121200-3260, which indicates a reliable source. Remember to confirm the condition of the electrical connector, as corrosion can also affect performance.