1991 Toyota Supra

Introduction

The 1991 Toyota Supra, a legendary sports car, was powered by a naturally aspirated 3.0-liter inline-6 engine. The 7M-GE engine produced 220 horsepower and 210 lb-ft of torque, paired with either a 5-speed manual or 4-speed automatic transmission. While the Supra offered impressive performance, it was not immune to issues.

Engine

7M-GE Engine

• Head Gasket Failure:
  • Description/Symptoms: Blown head gasket, coolant leaks, overheating, white smoke from exhaust.
  • Solution: Replace head gasket, head bolts, and resurface cylinder head.
  • Estimated Cost to Fix: $1,500 - $2,500+
• Timing Chain Tensioner Failure:
  • Description/Symptoms: Noisy timing chain, reduced engine performance, possible engine damage.
  • Solution: Replace timing chain tensioner.
  • Estimated Cost to Fix: $400 - $800
• Vacuum Leaks:
  • Description/Symptoms: Engine runs rough, poor fuel economy, hesitation upon acceleration.
  • Solution: Inspect and replace faulty vacuum hoses.
  • Estimated Cost to Fix: $50 - $200

Transmission

5-Speed Manual Transmission:

• Shift Linkage Wear:
  • Description/Symptoms: Difficulty shifting gears, grinding noises during shifts.
  • Solution: Replace shift linkage components.
  • Estimated Cost to Fix: $200 - $500
• Clutch Wear:
  • Description/Symptoms: Slipping clutch, difficulty engaging gears.
  • Solution: Replace clutch disc and pressure plate.
  • Estimated Cost to Fix: $800 - $1,200

4-Speed Automatic Transmission:

• Overheating:
  • Description/Symptoms: Transmission slips, delayed shifts, burnt transmission fluid.
  • Solution: Coolant flush, replace faulty transmission cooler, rebuild or replace transmission.
  • Estimated Cost to Fix: $800 - $2,500+
• Solenoid Failure:
  • Description/Symptoms: Harsh shifts, transmission slipping.
  • Solution: Replace faulty solenoid.
  • Estimated Cost to Fix: $200 - $500

Suspension

• Strut Failure:
  • Description/Symptoms: Worn struts, poor handling, reduced ride quality.
  • Solution: Replace struts and strut mounts.
  • Estimated Cost to Fix: $600 - $1,200+
• Control Arm Bushing Wear:
  • Description/Symptoms: Noisy suspension, poor handling, excessive tire wear.
  • Solution: Replace worn bushings.
  • Estimated Cost to Fix: $200 - $400

Electrical

• Alternator Failure:
  • Description/Symptoms: Dim headlights, battery discharge, warning lights on dashboard.
  • Solution: Replace alternator.
  • Estimated Cost to Fix: $400 - $700
• Electrical Harness Issues:
  • Description/Symptoms: Intermittent electrical problems, blown fuses, loss of power.
  • Solution: Inspect and repair faulty wiring harness.
  • Estimated Cost to Fix: $300 - $1,000+

Exterior

• Targa Top Seal Failure:
  • Description/Symptoms: Water leaks into interior, wind noise.
  • Solution: Replace targa top seal.
  • Estimated Cost to Fix: $200 - $500

Interior

• Climate Control Issues:
  • Description/Symptoms: Malfunctioning AC/heater, broken knobs or switches.
  • Solution: Repair or replace faulty climate control components.
  • Estimated Cost to Fix: $100 - $600
• Door Panel Rattle:
  • Description/Symptoms: Noisy door panels while driving.
  • Solution: Tighten or replace door panel clips.
  • Estimated Cost to Fix: $50 - $200

Summary

The 1991 Toyota Supra is generally a reliable sports car, but it is not without its issues. Engine problems, such as head gasket failure and timing chain tensioner failure, can be costly to repair. Transmission issues, including overheating and solenoid failure, can also be problematic. While suspension and electrical issues are less severe, they can still be inconvenient and expensive to fix. Exterior and interior issues are generally minor and less common. Overall, the cost of repairs for the 1991 Toyota Supra can range from minor to substantial, depending on the severity of the issue.