1988 Toyota 4Runner Service and Repair Manual

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Covers all 1988 4Runner trims — Base, SR5 ·
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1988 Toyota 4Runner service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications, torque values, and reference data
  • Electrical diagnostics with full wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more
  • Diagnostic trouble codes and troubleshooting flow
  • Maintenance schedules and fluid capacities

Trims covered

  • Base, Automatic
  • Base, Standard
  • SR5, Automatic
  • SR5, Standard

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Maintenance & Lubrication
  • Specifications
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Diagnostic Trouble Codes
  • Technical Service Bulletins
  • Wiring Diagrams
NHTSA #88V01900016/02/1988Component: FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

IMPROPER ROUTING OF THE FUEL HOSE COULD CAUSE SOME FUEL HOSES TO HAVE INADEQUATE CLEARANCE TO THE EGR PIPE.

Consequence

HEAT FROM THE EGR COULD CAUSE THE HOSE TO CRACK ANDRESULT IN FUEL LEAKAGE.

Remedy

REROUTE FUEL HOSE TO ENSURE PROPER CLEARANCE AND REPLACE HOSE, IF NECESSARY.

TSB #10244113

TSB: Replacement certification labels (the vinyl label installed on the driver door or door post) and VIN plates (the metal plate riveted to dashboard) (see Figure 1) for most 1979 ? 2023 model year vehicles may be available provided the re

TSB #10207946

POL: This consolidated Tire Warranty Guide contains the complete warranty terms for all brands of ground and spare tires currently in use by Toyota. This information must be kept near the point of vehicle sale and be available to any custom

TSB #10197473

Product general information.

TSB #10197476

Replacement vin plates.

TSB #10188913

TSB: Replacement certification labels (the vinyl label installed on the driver door or door post) and VIN plates (the metal plate riveted to dashboard) (see Figure 1) for most 1979 ? 2021 model year vehicles may be available provided the re

TSB #10174890

TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin Nos. PG021-88, PG015-89, PG0015-90, PG002-91, PG002-93, PG005-97, PG007-01, PG007-07, PG006-01, PG004-97, T-SB-0144-08, and T-SB-0304-17. The af

TSB #10174891

TSB: OBSOLETE NOTICE April 07, 2020: This bulletin is now obsolete. Please see T-SB-0032-20. Replacement Certification Labels and VIN Plates

TSB #600350

SUBJECT REGARDING CYLINDER HEAD INSTALLATION FOR VEHICLES EQUIPPED WITH THE 3VZ V6 ENGINE. *YC

Showing the 8 most recent of 9 technical service bulletins on file with NHTSA.

19980609Component: STRUCTURE:BODY:BUMPERS2 injured

BUMPER IS LOCATED TOO HIGH CAUSING DAMAGE DURING A COLLISION; SEAT BELT UNLATCHED IN ACCIDENT.

19980609Component: SEAT BELTS:FRONT:ANCHORAGE2 injured

BUMPER IS LOCATED TOO HIGH CAUSING DAMAGE DURING A COLLISION; SEAT BELT UNLATCHED IN ACCIDENT.

20020109Component: ENGINE AND ENGINE COOLING:ENGINE

HEAD GASKET WAS LEAKING. VEHICLE RAN POORLY, AND THERE WAS LITTLE HESITATION. *AK

20001127Component: EXTERIOR LIGHTING:TURN SIGNAL:SWITCH

WHEN USING HIGH BEAMS OR TURN SIGNALS HEADLIGHTS WILL TURN OFF. CONSUMER MUST WIGGLE/TOGGLE SWITCH FOR HEADLIGHTS TO TURN BACK ON.*AK

20001127Component: EXTERIOR LIGHTING:HEADLIGHTS

WHEN USING HIGH BEAMS OR TURN SIGNALS HEADLIGHTS WILL TURN OFF. CONSUMER MUST WIGGLE/TOGGLE SWITCH FOR HEADLIGHTS TO TURN BACK ON.*AK

Showing the 5 most serious of 12 complaints filed with NHTSA.

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