1991 Toyota MR2 Repair Manual - Engine Repair & Maintenance Guide
Wiring diagrams, specifications, and repair sequences for the 3S-GTE and 5S-FE engines. PN EWD083U/NCF062U
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Sample pages from the 1991 Toyota MR2 Repair Manual - Engine Repair & Maintenance Guide manual
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Toyota Models Covered & Key Technical Specifications
Models: Toyota MR2 (SW20 series), Toyota MR2 (SW21 series)
Sub-models / Variants: 3S-GTE Engine, 5S-FE Engine
Build Years: 1991
Technical Data:
- Engine Displacement (3S-GTE): 2.0 liters
- Engine Displacement (5S-FE): 2.2 liters
- Configuration: In-line 4-cylinder, DOHC, 16-valve
- Firing Order: 1–3–4–2
- Spark Plug Gap (3S-GTE): 0.8 mm (0.031 in.)
- Spark Plug Gap (5S-FE): 1.1 mm (0.043 in.)
- Compression Pressure (3S-GTE): 11.5 kg/cm² (164 psi) or more
- Compression Pressure (5S-FE): 12.5 kg/cm² (178 psi) or more
- Intake Valve Clearance (3S-GTE): 0.15–0.25 mm (0.006–0.010 in.)
- Exhaust Valve Clearance (3S-GTE): 0.20–0.30 mm (0.008–0.012 in.)
- Intake Valve Clearance (5S-FE): 0.19–0.29 mm (0.007–0.011 in.)
- Exhaust Valve Clearance (5S-FE): 0.28–0.38 mm (0.011–0.015 in.)
- Idle Speed (USA M/T): 750 ± 50 rpm
Toyota Manual Features & Content Preview
1991 Toyota MR2 Engine Maintenance Documentation
- Covers 1991 Toyota MR2 (SW20/SW21) engine mechanical systems for both the 3S-GTE and 5S-FE powerplants
- Official Toyota publication, Volume 1, documenting engine maintenance and overhaul procedures
- Contains 47 exploded-view diagrams of engine components and timing belt systems
- File link appears in your order confirmation straight away
- OCR text layer lets you jump to a torque spec by keyword
- This 1991 edition serves as the primary technical source for the SW20 series debut, featuring unique cross-referenced specifications for the 3S-GTE and 5S-FE engine variants
Engine Coverage and Systems
The 1991 Toyota MR2 engine mechanical manual details the architecture and service requirements for the 2.0-liter 3S-GTE and 2.2-liter 5S-FE engines. Sections define cylinder head assembly, engine block tolerances, and turbocharger system integration for the 3S-GTE. Lubrication systems, cooling, and ignition timing data are provided alongside maintenance schedules for drive belts, spark plugs, and air filtration.
The documentation outlines proper procedures for timing belt replacement, valve clearance adjustment using shim selection charts, and compression testing. Torque specifications are provided for assembly components including camshaft bearing caps, engine mounting brackets, and intake manifold fasteners. Electrical system troubleshooting notes are included, focusing on sensor diagnostic thresholds and battery maintenance protocols for the Supplemental Restraint System (SRS). Understanding factory workshop documentation is structured assists technicians in locating specific engine data sections.
Technical Specifications Preview
Engine cooling capacity is documented at 13.6 liters for the 3S-GTE and 13.0 liters for the 5S-FE. Valve clearance for the 3S-GTE intake is listed at 0.15–0.25 mm in the cylinder head specification table. Compression pressure for the 5S-FE is specified at a minimum of 10.0 kg/cm² in the engine mechanical data section. This 1584-page Toyota OEM workshop manual provides the full engine-specific data for the 1991 Toyota MR2, featuring technical diagrams, maintenance operations, and tightening torque values for the SW20 and SW21 chassis series.
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