Nissan Sentra/Pulsar/NX 1982-1996 Repair Guide

Gasoline Engines



When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.

  1. Anti-dieseling solenoid. Is located on the side of the carburetor. Remove the wire and remove from the carburetor. Install and torque to 10 ft. lbs. (15 Nm).
  3. Air Temperature control air cleaner temperature sensor. Is located inside the air cleaner housing. Remove the air cleaner cover, disconnect the vacuum hoses and remove the sensor (carbureted engine).
  5. Coolant temperature sensor. Is located in water passage in intake manifold. Drain the engine coolant and remove the sensor from the manifold. Install and torque to 25 ft. lbs. (34 Nm).
  7. Mixture heater. Is located under the carburetor. Remove the carburetor and remove the heater assembly. Install with new gaskets and torque the carburetor mounting nuts to 25 ft. lbs. (34 Nm).
  9. Cooling fan sensor. Is located in bottom hose tee of radiator. Drain the coolant from the radiator. Remove the hose tee and place in a vise. Remove the sensor from the tee. Apply thread sealing tape to the threads and torque to 15 ft. lbs. (20 Nm). Some late model vehicles have the sensor threaded into the radiator tank. Be careful not to damage the radiator threads when removing.
  11. Neutral safety switch. Is located at the transaxle.
  13. Clutch switch. Is located at the clutch pedal.