1988 Toyota Celica All Trac Repair Manual

The 1988 Toyota Celica All Trac is a four-wheel drive sports coupe featuring a 2.0L 3S-GTE turbocharged engine, 5-speed manual transmission, full-time AWD system, independent suspension, power steering, and advanced electronics for its era. This comprehensive repair manual covers maintenance, troubleshooting, and repair procedures for all major systems including engine, transmission, drivetrain, suspension, brakes, and electrical systems.

1. Vehicle Specifications 2. Maintenance Schedule 3. Engine System 4. Transmission & Drivetrain 5. Suspension & Steering 6. Brake System 7. Electrical System 8. Fuel System 9. Cooling System 10. Troubleshooting Guide 11. Technical Service Bulletins

Vehicle Specifications

Complete technical specifications for the 1988 Toyota Celica All Trac model.

Specification	Details
Engine	2.0L 3S-GTE turbocharged inline-4
Horsepower	190 hp @ 6000 rpm
Torque	190 lb-ft @ 3200 rpm
Transmission	5-speed manual
Drivetrain	Full-time AWD with viscous coupling
Suspension Front	MacPherson strut with stabilizer bar
Suspension Rear	Double wishbone with stabilizer bar
Brakes Front	Ventilated discs
Brakes Rear	Solid discs
Fuel Capacity	15.9 gallons
Curb Weight	3150 lbs

Maintenance Schedule

Recommended maintenance intervals for optimal performance and longevity.

Oil and filter change: Every 3,000 miles or 3 months
Spark plugs: Replace every 30,000 miles
Timing belt: Replace every 60,000 miles
Coolant flush: Every 30,000 miles or 2 years
Transmission fluid: Change every 30,000 miles
Transfer case fluid: Change every 30,000 miles
Brake fluid: Replace every 2 years
Air filter: Replace every 15,000 miles
Fuel filter: Replace every 30,000 miles

WARNING! Always use Toyota Genuine Parts or equivalent quality replacements. Follow torque specifications precisely.

Engine System

3S-GTE turbocharged engine repair and maintenance procedures.

Compression test: Should read 142-171 psi, max variation 14 psi between cylinders
Turbocharger inspection: Check for shaft play and oil leaks
Valve adjustment: Hydraulic lifters, no adjustment required
Ignition timing: 10° BTDC at idle
Fuel pressure: 38-44 psi at idle
Boost pressure: 8.5 psi stock

CAUTION! Allow turbocharger to cool before shutting off engine. Use premium unleaded fuel only.

Transmission & Drivetrain

Transmission Type: E150F 5-speed manual
Gear Ratios: 1st: 3.285, 2nd: 1.960, 3rd: 1.322, 4th: 1.028, 5th: 0.820, Reverse: 3.768
Final Drive: 4.285:1
Transfer Case: Viscous coupling full-time AWD
Driveshaft: Two-piece with center support bearing
Rear Differential: Viscous LSD

Suspension & Steering

Front: MacPherson strut with coil springs and stabilizer bar. Rear: Double wishbone with coil springs and stabilizer bar.

Alignment Specifications: Front camber: -0°25' ± 45', Front caster: +2°55' ± 45', Front toe: 0 ± 2mm, Rear camber: -1°00' ± 45', Rear toe: +2 ± 2mm

Steering: Power-assisted rack and pinion, 2.9 turns lock-to-lock.

Brake System

Front: Ventilated discs (10.0"), Rear: Solid discs (10.3"), ABS equipped.

Brake pad replacement: Minimum thickness 1.0mm
Rotor specifications: Minimum thickness front 20.0mm, rear 9.0mm
Brake fluid: DOT 3 or DOT 4
Bleeding sequence: RR, RL, FR, FL

Tip: Check brake fluid level regularly and inspect for leaks at calipers and lines.

Electrical System

12-volt negative ground system with 70-amp alternator and 45-55AH battery.

Battery voltage: 12.6V fully charged, 13.5-14.5V charging
Fusible links: Main 100A, Alternator 80A
Spark plug gap: 0.031 inch
Ignition coil primary resistance: 0.4-0.5 ohms
Ignition coil secondary resistance: 10.2-13.8 kohms

WARNING! Disconnect battery before working on electrical system. Use proper circuit protection.

Fuel System

Electronic fuel injection with turbo-specific calibration.

Fuel pump pressure: 38-44 psi
Injector resistance: 13.4-14.2 ohms at 20°C
Fuel filter: Replace every 30,000 miles
Throttle position sensor: 0.3-0.7 kohms closed, 3.5-6.5 kohms open

Cooling System

Pressurized cooling system with turbocharger cooling circuit.

Radiator cap pressure: 0.9 bar (13 psi), Thermostat opening: 82-88°C, Coolant capacity: 7.5 liters, Coolant type: Toyota Long Life Coolant or equivalent

CAUTION! Never open radiator cap when engine is hot. Check coolant level in overflow tank when cold.

Troubleshooting Guide

Symptom	Possible Cause	Corrective Action
Turbo lag or no boost	Boost leak, wastegate stuck	Check intercooler hoses, test wastegate operation
Hard starting when cold	Coolant temp sensor, fuel pressure	Test sensor resistance, check fuel pressure
AWD system noise	CV joints, transfer case	Inspect CV boots, check transfer case fluid
Overheating	Thermostat, radiator, water pump	Test thermostat, check coolant flow
Transmission grinding	Synchros, fluid level	Check transmission fluid, inspect synchro wear

Diagnostic Codes: Use diagnostic connector in engine bay to read ECU codes.

Technical Service Bulletins

Common factory-issued service updates for 1988 Celica All Trac:

TSB 88-001: Turbocharger oil line routing update
TSB 88-015: Revised clutch master cylinder design
TSB 88-022: ECU reprogramming for cold start enrichment
TSB 88-034: Transfer case vent tube modification
TSB 88-047: Revised intercooler mounting brackets

Service: Contact Toyota Technical Assistance at 1-800-331-4331 for additional support.