* Engine Issues:
* Engine misfires: A frequent complaint, often related to faulty ignition coils, spark plugs, or occasionally a failing crankshaft position sensor.
* Catalytic converter failure: Premature failure wasn't uncommon, leading to decreased performance and potentially costly repairs.
* Oil leaks: Leaks from the valve cover gasket, oil pan gasket, or rear main seal were relatively common.
* Timing chain issues (2.2L engine): While not always a catastrophic failure, stretching or wear on the timing chain could lead to problems down the line.
* Transmission Problems:
* Transmission slipping or rough shifting: Especially noticeable in automatic transmissions, this could be due to worn clutches, low fluid, or internal transmission problems.
* Electrical Problems:
* Alternator failure: A fairly common issue, often resulting in a dead battery.
* Electrical gremlins: A range of minor electrical glitches, from failing power windows to intermittent problems with the gauges or other components, were frequently reported.
* Suspension and Steering:
* Ball joint wear: A common wear item, leading to excessive play in the steering and potentially unsafe handling.
* Struts and shocks: These could wear out prematurely, affecting ride comfort and handling.
* Cooling System:
* Leaks in hoses or the radiator: Could lead to overheating if not addressed.
* Body and Interior:
* Rust: Especially in areas with harsh winters, rust could become a problem on the body panels, undercarriage, or exhaust system.
* Interior trim issues: Worn or broken interior components were not uncommon for a car of that age.
Important Note: The frequency of these problems can vary based on the car's maintenance history, driving conditions, and individual vehicle variations. A well-maintained Alero might experience fewer issues than one that's been neglected. It's always wise to have a pre-purchase inspection done by a trusted mechanic if considering buying a used 2003 Oldsmobile Alero.
