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1991 Nissan D21 Pickup CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Nissan REPAIR SHOPS DON'T WANT YOU TO KNOW

Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!

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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Nissan D21 Pickup car and truck repair procedures including Nissan engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up & drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix your Nissan D21 Pickup automobile. Try the Automotix DIY solution today!
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Using the Automotix DIY repair procedures will save you hundreds and even thousands of dollars! In addition, it will save you hours of touring the city searching for Nissan mechanics you can trust. The Automotix DIY solution is particularly affordable. A full access to the entire DIY repair procedures and diagrams for your 1991 Nissan D21 Pickup vehicle will cost less than a single gallon of gas. Here are some of the DIY repair tips and procedures you will find here:

A/C & HEATER SERVICE PROCEDURES FOR 1991 Nissan D21 Pickup AUTOMOBILES

Imported Cars & Light Trucks & Vans -> 1991-92 -> Evacuating System
Vehicle: 1991 Nissan D21 Pickup SE 3.0 V6 GAS

The system must be completely discharged before evacuation. After discharging the system, keep low pressure gauge hose connected to low pressure test fitting and both manifold gauge valves closed.

  • Connect high pressure gauge hose to vacuum pump, Fig. .
  • Connect center manifold gauge hose to refrigerant source with tapping valve closed.
  • Open high and low side gauge valves with vacuum pump operating.
  • Continue to operate pump for approximately 15-20 minutes after low side gauge reaches 29 or more inches of vacuum. If the system has been left open for an...

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BRAKE SERVICE PROCEDURES FOR 1991 Nissan D21 Pickup AUTOMOBILES

MITSUBISHI, POWER BRAKE UNITS -> BRAKE BOOSTER REPLACEMENT -> EXCEPT VAN/WAGON -> VAN/WAGON
Vehicle: 1991 Nissan D21 Pickup SE 3.0 V6 GAS

EXCEPT VAN/WAGON

  • Remove master cylinder as outlined in "Master Cylinder Replace" in "Hydraulic Brake Systems".
  • Disconnect vacuum hose from power brake booster.
  • Remove pin connecting power brake rod with pedal.
  • Remove booster attaching nuts and remove booster.
  • Reverse procedure to install.

VAN/WAGON

  • Remove master cylinder as outlined in "Master Cylinder Replace" in "Hydraulic Brake Systems".
  • Remove lap heater duct...

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FUEL FILTER REPLACEMENT PROCEDURES FOR 1991 Nissan D21 Pickup AUTOMOBILES

Nissan/Datsun -> Component Locations -> 1986-95 Pathfinder & Pickup w/3.0L Engine
Vehicle: 1991 Nissan D21 Pickup SE 3.0 V6 GAS

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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1991 Nissan D21 Pickup AUTOMOBILES

CV AXLE SHAFT, Replace
Vehicle: 1991 Nissan D21 Pickup 2.4 L4 GAS

  • Raise and support vehicle, then remove wheel.
  • Unfasten brake caliper assembly, leaving brake line attached.
  • Remove hub nut.
  • Remove tie-rod ball joint from knuckle, then separate driveshaft from steering knuckle by tapping on driveshaft. When removing driveshafts, cover boots with cloth to prevent damage.
  • On models with automatic transaxle, if replacing both dr...

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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1991 Nissan D21 Pickup AUTOMOBILES

Alternator, Replace
Vehicle: 1991 Nissan D21 Pickup 2.4 L4 GAS

  • Remove engine undercover.
  • Remove drive belt from alternator.
  • Disconnect harness co...

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MAINTENANCE LAMP RESET PROCEDURES FOR 1991 Nissan D21 Pickup AUTOMOBILES

Nissan -> Automatic Transmission (AT) Check Engine Lamp ->
Vehicle: 1991 Nissan D21 Pickup SE 3.0 V6 GAS

The Automatic Transmission (AT) Check lamp will be illuminated for approximately 2 seconds when the ignition switch is placed in the on position as a bulb check and then go Off. If it remains lit or comes on at any other time, a malfunction in the a...

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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1991 Nissan D21 Pickup AUTOMOBILES

Heater Hose, Replace -> Bypass -> Inlet -> Outlet
Vehicle: 1991 Nissan D21 Pickup 2.4 L4 GAS

Inlet

  • Disconnect battery ground cable.
  • Drain cooling system into a suitable container by loosening drain plug of radiator.
  • Reposition hose clamp at heater core.
  • Remove hose from heater core.
  • Reposition hose clamp at cylinder head.
  • Remove hose from cylinder head.
  • Remove hose from vehicle.
  • Reverse procedure to install.

Outlet

  • Disconnect battery ground cable.
  • Drain cooling system into a suitable container by loosening drain plug of radiator.
  • Reposition hose clamp at heater c...

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SERPENTINE BELT SERVICE PROCEDURES FOR 1991 Nissan D21 Pickup AUTOMOBILES

Serpentine Drive Belt, Replace
Vehicle: 1991 Nissan D21 Pickup SE 3.0 V6 GAS

  • Loosen lock nut on power steering pump.
  • Loosen adjusting bolt on power steering pump.
  • Remove power steering pump drive belt.
  • Loosen pulley bolt on idler pulley.
  • Loosen adjusting bolt on idler pulley.
  • Remove air conditioning compressor drive belt.
  • Loosen loc...

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COMPONENT LOCATION DIAGRAMS FOR 1991 Nissan D21 Pickup AUTOMOBILES

Component location diagrams for most 1991 Nissan D21 Pickup cars and light trucks sold in the U.S. from 1990+.

A/T Shift Lock Key Lock Solenoid Location Diagram for 1991 Nissan D21 Pickup  2.4 L4 GASA/T Shift Lock Key Lock Solenoid Location Diagram for 1991 Nissan D21 Pickup 2.4 L4 GAS

Components on diagram:
  • Key Switch
  • Emergency Button
  • Key Cylinder
  • Key Lock Solenoid
  • A/T Components Diagram for 1991 Nissan D21 Pickup  3.0 V6 GASA/T Components Diagram for 1991 Nissan D21 Pickup 3.0 V6 GAS

    Components on diagram:
  • Revolution Sensor
  • A/T Control Unit
  • Inhibitor Switch
  • A/T Fluid Temperature Sensor
  • Kickdown Switch
  • CLICK HERE TO GET FULL ACCESS TO 1991 Nissan D21 Pickup PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 1991 Nissan D21 Pickup AUTOMOBILES

    OEM drawn wiring diagrams for most 1991 Nissan D21 Pickup cars and light trucks sold in the U.S.

    1991 Nissan D21 Pickup  2.4 L4 GAS Wiring Diagram1991 Nissan D21 Pickup 2.4 L4 GAS Wiring Diagram

    Components on diagram:
  • Ignition Switch
  • Mirror Control Switch
  • Assist Side Electrical Door Mirror
  • LH Electrical Door Mirror
  • CLICK HERE TO GET FULL ACCESS TO 1991 Nissan D21 Pickup WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 1991 Nissan D21 Pickup AUTOMOBILES

    OEM TSB listings for most 1991 Nissan D21 Pickup cars and light trucks sold in the U.S. from 1985+.

    Document: A/C SYSTEM O-RING SEAL LEAKS
    Vehicle: 1991 Nissan D21 Pickup 3.0 V6 GAS

    Auto Systems:
  • Heating, A/C, Ventilation, Defogger
  • Document: WINDSHIELD CRACKING
    Vehicle: 1991 Nissan D21 Pickup 3.0 V6 GAS

    Auto Systems:
  • Glass, Doors, Hood, Decklid, Tailgate, Liftgate, Locks
  • CLICK HERE TO GET FULL ACCESS TO 1991 Nissan D21 Pickup TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 1991 Nissan D21 Pickup AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1991 Nissan D21 Pickup cars and light trucks sold in the U.S. and Canada from 1970+.

    • Brake caliper mounting bolt torque
    • Brake drum runout, machining, & discard specs
    • Minimum brake lining thickness.
    • Brake rotor runout, parallelism, machining, discard, & finish specs

    A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 1991 Nissan D21 Pickup cars and light trucks sold in the U.S. and Canada from 1980+.

    • Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap

    COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.

    PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules

    QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 1991 Nissan D21 Pickup cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.

    • Automatic transmission/transaxles capacities, lubricant recommendations
    • Differential/final drive capacities, lube recommendations, grades, & viscosities
    • Final drive fill & drain plug torques
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
    • Severe service maintenance & interval recommendations
    • Tire sizes, wheel nut/bolt torque, pressures & rim sizes
    • Transfer case capacities, lube recommendations, grades, & viscosities

    TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 1991 Nissan D21 Pickup cars and light trucks sold in the U.S. and Canada from 1980+

    • Airflow sensor electrical specifications
    • Tensioning specifications for systems with automatic tensioners
    • Barometric pressure sensor specs
    • Battery group number and cranking performance
    • Crankshaft & camshaft position sensor resistance
    • Engine compression pressures
    • Coolant temperature sensor specs
    • Computer advance.
    • Diesel fuel temperature sensor resistance.
    • Distributor advance specifications
    • Ignition pickup coil resistance
    • Exhaust gas recirculation temperature sensor resistance
    • Engine fastener torque values
    • Firing order diagrams
    • Fuel system pressures
    • Generator (alternator) specs
    • Intake air temperature sensor specs
    • Ignition coil specifications
    • Fuel injector resistance
    • Engine idle speeds
    • Knock sensor resistance
    • Manifold absolute pressure sensor specs
    • Mixture control solenoid resistance
    • Voltage regulator specs
    • Spark plug applications & gaps
    • Starter motor electrical specs.
    • Tensioning specifications for systems without automatic tensioners
    • Throttle body temperature sensor resistance
    • Ignition timing in degrees at rpm
    • Transmission oil temperature sensor resistance
    • Throttle position sensor specs
    • Vacuum sensor valve specs

    CLICK HERE TO GET FULL ACCESS TO 1991 Nissan D21 Pickup SPECIFICATIONS DATA!

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