1991 Acura NSX Factory Service Repair Manual PDF

Description

1991 Acura NSX Factory Service Repair Manual PDF DOWNLOAD

Description

This is the official 1991 Acura NSX Factory Service Repair Manual PDF, the same 1450-page dealership manual used by Acura service centers.

102088172-NSX-Service-Manual

Designed for professional technicians and NSX owners performing advanced repairs, this manual provides precise factory procedures, NSX C30A engine specifications and service limits, complete electrical troubleshooting, and full mechanical, chassis, and body repair instructions.

The manual is divided into 14 complete factory sections — each with its own table of contents and detailed diagrams.

Table of Contents 

1. Introduction & General Information

• How to Use This Manual

• Symbols, thumb index, and organization

• Safety precautions & workshop practices

• Lift and Support Points

  • 2-post lift locations

  • Floor jack center support

  • Stand positions for the NSX’s aluminum frame

  • Low-ground-clearance considerations
    

• Towing Instructions

  • Preferred: Flat-bed only

  • Emergency tow speed & distance limits for the NSX
    

2. Supplemental Restraint System (SRS – Airbag)

A dedicated section for Acura NSX SRS airbag system troubleshooting:

• Component locations:

  • Driver’s airbag

  • Dash impact sensors

  • SRS control unit with cowl sensor

  • Cable reel & harness routing (yellow circuits)

• System Operation

  • Battery vs backup power for airbag deployment
    

• Warning light behavior (6-second test)

• Servicing procedures

  • Connector rules

  • Airbag handling & storage

  • Steering wheel & cable reel servicing
    

3. Specifications & Service Limits

Complete NSX C30A engine specifications and service limits:

• Cylinder Head & Valve Train

  • Compression, valve clearance, spring length, stem-to-guide clearance
    

    102088172-NSX-Service-Manual

• Engine Block

  • Bore measurements, piston clearances, ring gaps, crankshaft tolerances
    

    Design Specifications

    • Engine output

    • Cooling system capacity

    • Oil capacity and type

    • Gear ratios and final drive

    • Steering, suspension, alignment, brakes

4. Vehicle Identification, Chassis & Paint Codes

VIN decoding for Acura NSX NA1:

• JH4 – Acura (Honda Motor Co. Japan)

• NA1 – NSX chassis designation

• Transmission identifiers

• Model year code “M” = 1991

• Factory production code

• Engine number location

• Paint code list

5. Maintenance & General Service

All factory maintenance content:

102088172-NSX-Service-Manual

• Inspection intervals

• Lubrication chart

• Adjustment procedures (throttle, idle, clutch, parking brake)

• General safety

• Special tools list (each section shows required tools)
  

6. Engine Section (C30A)

Coverage includes:

• Cylinder head and valve train

• Camshaft specs and timing

• Engine block overhaul

• Piston & ring inspection

• Connecting rods & crankshaft checks

• Lubrication system

• Cooling system bleeding

• Fuel system diagrams

• Emissions components

• Ignition system troubleshooting

This makes the manual essential for any engine rebuild or NA1 restoration.

7. Transmission, Differential & Driveline

Factory procedures include:

• 5-speed manual transmission overhaul

• Automatic transmission service (if equipped)

• Clutch hydraulic system

• Driveshafts, CV joints

• Differential setup & sealing

8. Suspension, Steering & Brakes

• Alignment specifications

• Ride height procedure

• Front & rear suspension torque specs

• Steering column & rack service
  (integrated with SRS precautions)
  

• Brake system & ABS troubleshooting

• Notes on aluminum-frame fasteners
  (Dacro, Torquer bolts)
  

9. Body, Exterior & Interior

• Doors, windows, locks

• Bumpers, lights, retractable headlamps

• Interior trim, dash & console

• Seat service

• Aluminum-body repair considerations

• Full exploded diagrams

10. Heater & Air Conditioner

Dedicated HVAC section:

• A/C refrigerant circuit

• Compressor, evaporator, condenser service

• A/C performance diagnostics

• Heater core, blend doors & controls

11. Electrical System & Wiring

• Full NSX wiring diagrams

• Fuse & relay layouts

• Ground point charts

• Connector views and pinouts

• Intermittent electrical troubleshooting
  (grounding, voltage-drop testing)
  

  102088172-NSX-Service-Manual

• SRS-related electrical diagrams
  (double-locked connectors

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