1991 Buick Riviera

Introduction to the 1991 Buick Riviera

The 1991 Buick Riviera is a luxurious coupe that combines comfort, style, and performance. It is powered by a 3.8L V6 engine that produces 170 horsepower and 240 lb-ft of torque. The Riviera is available with a 4-speed automatic transmission or a 5-speed manual transmission. Despite its impressive features, the Riviera has a few known issues that potential buyers should be aware of.

Engine

3.8L V6 with 4-Speed Automatic Transmission

• Intake Manifold Gasket Failure: Symptoms include coolant or oil leaks, overheating, and reduced engine power. The solution is to replace the faulty gasket. Estimated cost: $300-$500.
• Timing Chain Tensioner Failure: Symptoms include rattling noises from the engine, especially during acceleration. The solution is to replace the timing chain tensioner. Estimated cost: $500-$700.
• Water Pump Failure: Symptoms include overheating, coolant leaks, and a squealing noise coming from the water pump. The solution is to replace the water pump. Estimated cost: $200-$350.

3.8L V6 with 5-Speed Manual Transmission

No Issues Found

Transmission

4-Speed Automatic Transmission

• Slipping Gears: Symptoms include difficulty shifting gears, transmission slipping out of gear, and erratic gear selection. The solution is to repair or replace the transmission. Estimated cost: $1,500-$2,500+.

5-Speed Manual Transmission

No Issues Found

Suspension

• Strut Mount Failure: Symptoms include a clunking noise when turning or driving over bumps. The solution is to replace the strut mounts. Estimated cost: $200-$400.
• Ball Joint Failure: Symptoms include a loose or shaky feeling in the steering wheel, uneven tire wear, and a clunking noise when turning. The solution is to replace the ball joints. Estimated cost: $300-$600.

Electrical

• Alternator Failure: Symptoms include dim headlights, electrical system failure, and difficulty starting the vehicle. The solution is to replace the alternator. Estimated cost: $500-$700.
• Battery Drain: Symptoms include difficulty starting the vehicle or a dead battery after the vehicle has been parked. The solution is to locate the source of the battery drain and repair or replace the affected components. Estimated cost: Varies depending on the cause.

Exterior

• Door Handle Failure: Symptoms include difficulty opening doors or the door handle breaking off. The solution is to replace the door handle. Estimated cost: $100-$300.
• Window Regulator Failure: Symptoms include difficulty rolling up or down windows or windows getting stuck in the open or closed position. The solution is to replace the window regulator. Estimated cost: $200-$500.

Interior

• Power Seat Failure: Symptoms include difficulty adjusting power seats or seats not moving at all. The solution is to repair or replace the power seat motor or other affected components. Estimated cost: $200-$600.
• Dashboard Cracking: Symptoms include cracks or splits in the dashboard material. The solution is to replace the dashboard or repair it with a dashboard cover. Estimated cost: $500-$1,000+.

Summary

The 1991 Buick Riviera is a capable luxury coupe that offers a comfortable and powerful driving experience. However, like any vehicle, it has its share of potential issues. The most common issues are related to the engine, transmission, and suspension. While some of these issues can be relatively minor and inexpensive to fix, others can be more severe and costly. Potential buyers should be aware of these issues and factor them into their decision-making process.