1990 Nissan-Datsun Sentra BaseFACTORY OEM SERVICE PROCEDURE

Repair and Diagnosis

1990 Nissan-Datsun Sentra Base Service Manual "split tree" of links. The tree is cut off at a certain depth to keep the page loading fast, but you may have to click multiple links to get to the content you want. View "full tree" with all links on one page (will load slowly, but easier to use ctrl-f to search all pages) [IMAGE: http://127.0.0.1:8080/icons/quick-lookups.svg] Quick Lookups [IMAGE: http://127.0.0.1:8080/icons/locations.svg] Electrical Component Locations Diagnostic Connector (DLC) Locations Electrical Component Locator [IMAGE: http://127.0.0.1:8080/icons/fluids.svg] Fluids [IMAGE: http://127.0.0.1:8080/icons/technical-service-bulletins.svg] Technical Bulletins Campaigns Safety Recalls Tech Tips Technical Service Bulletins [IMAGE: http://127.0.0.1:8080/icons/tire.svg] Tire Fitment [IMAGE: http://127.0.0.1:8080/icons/diagrams.svg] Wiring Diagrams System Wiring Diagrams Using lemon2025'S System Wiring Diagrams Wiring Diagrams Accessories & Equipment Anti-Theft Systems Power Door Locks Gauges & Instrument Panels Instrument Panel - Standard Heated Glass/Defoggers Defogger - Rear Window Steering Column Switches Window Motors & Regulators Power Windows Wiper/Washer Systems Body & Frame Power Door Locks Power Windows Brakes Mechanical - Hydraulic Disc & Drum Drivelines & Axles Axle Shafts - Front Differentials & Drive Axles Drive Axle - Rear Electrical Charging Systems Alternator & Regulator - HITACHI Alternator & Regulator - MITSUBISHI Component Locations Diagnostic Connector (DLC) Locations Electrical Component Locator Fuses & Circuit Breakers Gauges Instrument Panel - Standard Starter Wiring Diagrams System Wiring Diagrams Using lemon2025'S System Wiring Diagrams Wiring Diagrams Engine Mechanical Accessory Drive Belts Drive Belt Routing & Adjustment Specifications Auxiliary Emission Control Systems Emission Control System Visual Inspection Procedures - General Information Electric Cooling Fans Cooling System (Mechanical) Cooling System Specifications Drive Belt Routing & Adjustment Specifications Mechanical 1.6L 4-CYL - VIN [G] Starter Engine Performance Engine Controls - Adjustments Application Engine/VIN Id Emissions EGR Function Testing - NISSAN Emission Applications Emission Control Abbreviations State Emission Standards - Diesel State Emission Standards - Gas Engine Controls - Pin Voltage Charts Remove, Overhaul & Install Engine Controls - Remove/Install/Overhaul Sensor Range Charts Engine Controls - Sensor Operating Range Charts Engine Controls - Specifications System EGR Function Testing Engine Controls - Basic Testing Engine Controls - System/Component Tests Engine Controls - Tests W/Codes Engine Controls - Tests W/O Codes Testing & Diagnosis EGR Function Testing Engine Controls - Basic Testing Engine Controls - System/Component Tests Engine Controls - Tests W/Codes Engine Controls - Tests W/O Codes Theory and Operation Engine Controls - Theory & Operation Vacuum Diagrams Wiring Diagrams General Information Abbreviations Commonly Used Abbreviations - General Information Emission Control Abbreviations Basic Trouble Shooting Basic Trouble Shooting - General Information Commonly Used Abbreviations - General Information Emission Control Abbreviations Engine Performance - Trouble Shooting - General Information Brakes Anti-Lock Brake Safety Precautions - General Information Map - Brake Systems Map - Routine Inspection Reference Guide Check Lists Symptom Check List Worksheet - General Information Computer Relearn Procedures Driveline/Axles Drive Axle Noise Diagnosis - General Information Gear Tooth Contact Patterns - General Information Map - Drive Train & Transmission Trouble Shooting - Clutches - General Information Electrical Map - Electrical Systems Using lemon2025'S System Wiring Diagrams Engine Engine Overhaul Procedures - General Information General Cooling System Service - General Information Engine Performance Electrostatic Discharge Warning - General Information Engine Performance Diagnostic Routine Outline - General Information Engine Performance Safety Precautions Map - Engine Performance & Maintenance Parasitic Load Explanation & Test Procedures - General Information State Emission Standards - Diesel State Emission Standards - Gas Waveforms - Injector Pattern Tutorial - General Information Map - Exhaust Systems Heating, Ventilation & A/C (HVAC) Map - Heating, Ventilation, & Air Conditioning Identification CANADIAN Model Cross-Reference Metric Conversions Engine Displacement Conversion Table - ECAT Metric Conversions OEM General Information How To Use The Engine Performance Section Steering Map - Steering, Suspension, Wheel Alignment, Wheels & Tires Wheel Alignment Theory & Operation - General Information Traction Control Disable Procedures Trouble Shooting - Manual Transmission - General Information Heating, Ventilation & A/C (HVAC) General Servicing A/C Compressor Oil Checking A/C Compressor Servicing A/C System General Diagnostic Procedures A/C System Precautions HVAC Control Systems A/C-Heater System - Manual Heater System Maintenance Procedures Interference Verification Check For OHC Engine Maintenance Information Service Indicator & Warning Lights Restraints Passive Restraints Seat Belts - Automatic Steering Manual Steering Steering System - Manual Steering System - Power Power Steering Steering System - Manual Steering System - Power Steering Column Suspension Front Suspension Suspension - Front Rear Suspension Suspension - Rear Wheel Alignment Jacking & Hoisting Pre-Alignment Checks Riding Height Adjustment Wheel Alignment Specifications & Procedures Transmission Clutches Manual Trans Overhaul - RN4F30 & RS5F30 Series Servicing - M/T

Factory Service Tools

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Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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