1990 INFINITI Q45

Introduction to the 1990 INFINITI Q45

The 1990 INFINITI Q45 is a luxury sedan powered by a 4.5-liter V8 engine paired with a 4-speed automatic transmission. It produces 278 horsepower and 292 lb-ft of torque. The Q45 is known for its spacious interior, powerful engine, and smooth ride, but it has also received some criticism for its lackluster fuel economy and dated interior design.

Engine

4.5L V8

• Head gasket failure: Symptoms include engine overheating, loss of coolant, and white smoke from the exhaust. The solution is to replace the head gasket, which costs around $1,000 - $2,000+.
  • Recalls: None Found
• Intake manifold gasket leak: Symptoms include rough idling, stalling, and decreased performance. The solution is to replace the intake manifold gasket, which costs around $500 - $700+.
  • Recalls: None Found
• Knock sensor failure: Symptoms include erratic engine performance, decreased fuel economy, and engine knocking. The solution is to replace the knock sensor, which costs around $200 - $400+.
  • Recalls: None Found

Transmission

4-Speed Automatic

• Shift solenoid issues: Symptoms include delayed or hard shifting, slipping gears, and loss of power. The solution is to replace the shift solenoid, which costs around $500 - $800+.
  • Recalls: None Found
• Torque converter failure: Symptoms include delayed or no engagement, slipping, and overheating. The solution is to rebuild or replace the torque converter, which costs around $1,000 - $2,500+.
  • Recalls: None Found

Suspension

• Front strut mount wear: Symptoms include clunking or popping noises from the front suspension, especially over bumps. The solution is to replace the strut mounts, which costs around $200 - $400+.
  • Recalls: None Found
• Rear shock absorber wear: Symptoms include a rough ride, decreased handling, and bottoming out over bumps. The solution is to replace the rear shock absorbers, which costs around $400 - $600+.
  • Recalls: None Found

Electrical

• Alternator failure: Symptoms include dim headlights, decreased battery life, and engine stalling. The solution is to replace the alternator, which costs around $300 - $600+.
  • Recalls: None Found
• Battery failure: Symptoms include difficult or no starting, dim headlights, and electrical system malfunctions. The solution is to replace the battery, which costs around $100 - $200+.
  • Recalls: None Found
• Ignition switch failure: Symptoms include no power to the ignition system, no starting, and warning lights on the dashboard. The solution is to replace the ignition switch, which costs around $200 - $400+.
  • Recalls: 10V-187

Exterior

• Body rust: Symptoms include rust spots or bubbles on the body panels, especially near wheel wells and bumpers. The solution is to repair or replace the affected panels, which costs around $500 - $2,000+.
  • Recalls: None Found
• Trim fading: Symptoms include discoloration or fading of the chrome trim or exterior paint. The solution is to repaint or replace the affected trim, which costs around $500 - $1,000+.
  • Recalls: None Found
• Door handle corrosion: Symptoms include rusty or sticky door handles, especially on the outer door panels. The solution is to replace the door handles, which costs around $100 - $200+.
  • Recalls: None Found

Interior

• Dashboard cracking: Symptoms include cracks or peeling on the dashboard. The solution is to replace the dashboard, which costs around $500 - $1,000+.
  • Recalls: None Found
• Power window failure: Symptoms include inoperative or slow power windows. The solution is to repair or replace the power window motor or switch, which costs around $200 - $400+.
  • Recalls: None Found
• Air conditioning failure: Symptoms include no cooling or weak airflow from the air vents. The solution is to repair or replace the air conditioning compressor or other components, which costs around $500 - $1,500+.
  • Recalls: None Found

Summary

The 1990 INFINITI Q45 is a well-built and reliable luxury sedan, but it is not without its issues. The most common concerns are engine gasket leaks, transmission problems, and suspension wear. However, these issues are generally not severe and can be repaired at a reasonable cost. Overall, the Q45 is a good choice for those seeking a comfortable and powerful sedan with a relatively low cost of ownership.