1990 Oldsmobile Cutlass Supreme

Introduction:

The 1990 Oldsmobile Cutlass Supreme is a midsize sedan that was powered by a 3.1L V6 engine and available with a 4-speed automatic transmission. With 140 horsepower and 180 lb-ft of torque, the Cutlass Supreme was known for its comfortable ride and affordable price point. However, it also had several issues that affected its reliability and overall performance.

Engine

3.1L V6 Engine

• Oil leaks: Can occur from various seals and gaskets, causing visible leaks under the vehicle.
• Intake manifold gasket failure: Can lead to coolant and oil leaks, as well as decreased engine performance.
• Throttle body issues: May cause the engine to stall or idle rough.
• Knock sensor failure: Can cause the engine to run poorly and damage the engine if not replaced promptly.
• Power steering pump failure: Can cause heavy steering and loss of power steering assist.

Transmission

4-Speed Automatic Transmission

• Slipping gears: Can occur during shifting or while driving, causing the vehicle to lose power.
• Transmission fluid leaks: May occur from seals or gaskets, causing a loss of fluid and potential transmission damage.
• Overheating: Can cause the transmission to shudder or slip, eventually leading to failure.
• Valve body issues: Can cause erratic shifting or transmission failure.

Suspension

• Front strut mounts: Can wear out and cause clunking noises when driving over bumps.
• Rear springs: Can sag or break, leading to a decrease in ride height and handling.
• Sway bar links: Can wear out and cause clunking noises when turning.
• Ball joints: Can wear out and cause uneven tire wear or a loose steering feel.

Electrical

• Alternator failure: Can cause the battery to drain and the vehicle to stall.
• Battery failure: Short lifespan and frequent need for replacement.
• Fuse box issues: Can cause various electrical components to malfunction.
• Headlight switch failure: Can cause the headlights to malfunction or fail to turn on.
• Ignition switch failure: Can prevent the vehicle from starting or cause it to stall while driving.

Exterior

• Door handles: Can break or become loose, making it difficult to open the doors.
• Plastic trim fading: Can occur due to sun exposure, giving the vehicle a worn appearance.
• Tailgate struts: Can weaken and fail, causing the tailgate to fall open unexpectedly.

Interior

• Dashboard cracking: Can occur due to sun exposure or temperature changes.
• Door panel fabric sagging: Can become loose and unsightly.
• Air conditioning compressor failure: Can cause the air conditioning system to malfunction.
• Cruise control issues: Can become intermittent or unresponsive.

Summary:

The 1990 Oldsmobile Cutlass Supreme had several issues that could affect its reliability and performance. These issues ranged in severity and repair costs, with some being relatively minor and others potentially leading to major expenses. Overall, the Cutlass Supreme’s reliability was below average for its class, and it is important for potential owners to be aware of these issues before purchasing one of these vehicles.