Restore proper timing to your engine with this new direct replacement Camshaft Position Sensor the CPS is a key component to your engine's timing and firing system. The Camshaft Position Sensor in most vehicles sends a signal to the Electronic Control Module (ECM) letting the computer know the position of the engine for timing and fuel injection pulses to the engine. A bad or malfunctioning cam sensor will often cause a service engine light error code and or cause a no start condition or rough running due to inaccurate ignition and fuel timing.** Factory Replacement Part that Meets or Exceeds Original Manufacturer Specifications for the Vehicles Listed.1983 Nissan Pulsar 1.6L 1597CC l4 GAS SOHC 1987 Nissan Pulsar NX 1.6L 1597CC l4 GAS DOHC 1983-1988 Nissan Pulsar NX 1.6L 1597CC l4 GAS SOHC 1983-1984 Nissan Pulsar NX 1.5L 1488CC l4 GAS SOHC Turbocharged 1988-1989 Nissan Pulsar NX 1.8L 1809CC l4 GAS DOHC 1989-1990 Nissan Pulsar NX 1.6L 1597CC 97Cu. In. l4 GAS SOHC 1990 Nissan Pulsar NX 1.6L 1597CC l4 GAS