1991 Subaru Loyale Service and Repair Manual

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Covers all 1991 Loyale trims — Base Sedan 4-Door, Base Wagon 4-Door ·
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1991 Subaru Loyale 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 and reference data (where provided)
  • Electrical diagnostics with wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more

Trims covered

  • Base Sedan 4-Door
  • Base Wagon 4-Door

Engines covered

  • 1.8L 1781CC H4 GAS SOHC Naturally Aspirated

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
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams
NHTSA #94V05200023/03/1994Component: POWER TRAIN:MANUAL TRANSMISSION

WHEN THE VEHICLE IS DRIVEN CONTINUOUSLY UNDER EXTREMELY COLD TEMPERATURES (-22 DEGREES F.) AND HIGH HUMIDITY WEATHER CONDITIONS, THE TRANSMISSION BREATHING (AIR) VENT CAN BE BLOCKED DUE TO MOISTURE FR

Consequence

SUDDEN STOPS WITHOUT PRIOR WARNING CAN CAUSE VEHICLE OCCUPANTS TO BE THROWN AROUND THE VEHICLE AND C

Remedy

DEALERS WILL MODIFY THE OIL GAUGE PIPE AND MODIFY THE OIL LEVEL GAUGE (DIPSTICK) OR REPLACE IT, DEPE

NHTSA #91V09100011/06/1991Component: POWER TRAIN:AUTOMATIC TRANSMISSION

TRANSMISSION SHIFT LINKAGE MAY BE INCORRECTLY ADJUSTED AND WOULD NOT BE ENGAGED IN A FULL PARK POSITION WHEN PLACED IN PARK.

Consequence

IF TRANSMISSION PARK MECHANISM IS NOT IN PARK WHILE THEVEHICLE IS RUNNING OR ON AN INCLINE, A RUNAWA

Remedy

REPAIR THE TRANSMISSION PARK MECHANISM.

TSB #10219491

This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.

TSB #10219492

This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.

TSB #10209915

This bulletin has been developed to outline the steps for gathering basic essential information during diagnosis and repair of the Infotainment concerns. (Applicable to all models with Harman or Denso CP1 Infotainment).

TSB #10198758

This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models

TSB #10198749

This bulletin is to advise of SOAs revised catalytic converter recycling program shipping procedure.

TSB #10187315

To help reduce confusion and increase technician efficiency, Subaru of America, Inc. (SOA) has developed the following cross reference list to help locate the appropriate Special Service Tool.

TSB #10179378

Special Service Tools Cross Reference List.

TSB #10174543

All Models (Vehicle Cleaning- COVID-19Best Practices)

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

19960412Component: SEAT BELTS:FRONT:WEBBINGCrash reported2 injured

THE DRIVERS AND FRONT PASSENGER SHOULDER BELTS DID NOT RESTRAIN THE OCCUPANTS IN AN ACCIDENT CAUSING FURTHER INJURY. PLEASE DESCRIBE. *AK

20240702Component: SEAT BELTS

The contact owns a 1991 Subaru Loyale. The contact stated that while driving at an undisclosed speed, the automatic seat belt continuously opened and retracted independently, failing to secure the con

20240702Component: ENGINE

The contact owns a 1991 Subaru Loyale. The contact stated that while driving at an undisclosed speed, the automatic seat belt continuously opened and retracted independently, failing to secure the con

20211229Component: EQUIPMENT

The contact owns a 1991 Subaru Loyale equipped with a replacement CV-axle from Master Pro, Part Number: SB8003. The contact indicated that while driving in reverse, the vehicle suddenly stopped moving

20070105Component: POWER TRAIN:AUTOMATIC TRANSMISSION

TL* - ON A COLD DAY WHILE TRYING TO DRIVE IN REVERSE THE WOULD NOT ENGAGE IN THE REVERSE GEAR. THE CONTACT WAITED FOR THE VEHICLE TO WARM UP, AND WAS ABLE TO DRIVE FOR SOMETIME, UNTIL THE TRANSMISS

Showing the 5 most serious of 19 complaints filed with NHTSA.

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