The 2002 Porsche Boxster S combines thrilling performance, iconic styling, and the thrill of a mid-engine layout in a relatively affordable sports car package. While the 986 Boxster series, including the 2002 Boxster S, is revered among enthusiasts, it has its own set of potential issues that prospective owners should consider. In this article, we’ll delve into the common problems with the 2002 Porsche Boxster S, tips on what to look for when buying, and the typical costs of ownership.
Common Problems with the 2002 Porsche Boxster S
1. Intermediate Shaft (IMS) Bearing Failure
One of the most infamous and well-documented issues with the 2002 Boxster S is the potential failure of the Intermediate Shaft (IMS) bearing. The IMS is crucial for timing the camshafts and, if the bearing fails, it can lead to catastrophic engine damage. While not every Boxster S is prone to this problem, it is a known risk in the early 986 Boxster models. Many owners have opted to install an aftermarket IMS bearing as a preventative measure.
Signs and Prevention: Warning signs of IMS bearing failure include metallic noises from the engine, increased oil consumption, or metal shavings in the oil filter. Checking service records to see if the IMS bearing has been replaced with an upgraded version can provide peace of mind. If not, budgeting for this modification is strongly recommended, as replacing it can prevent far more costly engine repairs down the line.
2. Rear Main Seal (RMS) Leaks
Rear Main Seal (RMS) leaks are another common issue with the 986 Boxster series, including the 2002 Boxster S. The RMS is located between the engine and transmission, and if it begins to leak, oil may seep onto the clutch assembly. This not only affects performance but also can lead to costly repairs.
Signs and Prevention: Oil spots beneath the rear end of the car after parking can indicate an RMS leak. Repairing the RMS requires removing the transmission, which can be labor-intensive. Some owners choose to replace the RMS when performing other repairs, such as clutch replacement, to save on labor costs.
3. Cylinder Bore Scoring
Another engine-related concern with the 2002 Boxster S is cylinder bore scoring, which is the development of scratches on the cylinder walls. This issue is more common with the larger engines, particularly those in the 3.2L Boxster S models, and can lead to symptoms such as increased oil consumption, rough idle, and blue smoke from the exhaust.
Signs and Prevention: Signs of cylinder bore scoring include a ticking noise from the engine when cold, high oil consumption, or blue smoke from the exhaust. Regular oil changes with high-quality oil and careful monitoring of oil levels can help reduce the risk of this issue, but it’s largely a matter of luck. A pre-purchase inspection (PPI) that includes a bore scope inspection of the cylinders can reveal the condition of the cylinder walls before purchasing.
4. Convertible Top Mechanism Issues
The Boxster S’s power-operated convertible top can develop issues over time, particularly if the car has been exposed to weather conditions or if the top hasn’t been regularly maintained. Common issues include broken cables, misalignment, and motor failure, which can prevent the top from operating smoothly or at all.
Signs and Prevention: Watch for any hesitation, noise, or jamming when operating the convertible top. Regular lubrication of the mechanism and ensuring that the drainage channels are clear can help prolong the life of the convertible top motor. Replacement parts, including motors and cables, are available but can be costly to repair if the entire system needs to be replaced.
5. Water Ingress and Drainage Problems
Water ingress is another common problem with the 986 Boxster, especially if drainage channels are clogged. Water that isn’t drained properly can leak into the cabin and damage the car’s electronic components, including the alarm control module and ECU, which are both located under the seats and are vulnerable to water exposure.
Signs and Prevention: Signs of water ingress include damp carpeting, musty smells in the cabin, and erratic electrical behavior (such as issues with central locking or alarm activation). Regularly cleaning and clearing out the drainage holes around the convertible top is crucial. Ensuring that the car is protected from rain if parked outdoors can help reduce the risk of water damage.
6. Mass Air Flow (MAF) Sensor Failure
The Mass Air Flow (MAF) sensor, responsible for measuring the air intake to optimize fuel mixture, is another component that commonly fails in the Boxster S. A faulty MAF sensor can lead to rough idling, poor fuel economy, and sluggish acceleration.
Signs and Prevention: Signs of a failing MAF sensor include a rough idle, hesitation during acceleration, and the “Check Engine” light illuminating on the dash. Cleaning the MAF sensor periodically can help prevent buildup of contaminants, but eventually, replacement may be required. Replacing the MAF sensor is a relatively simple fix compared to other issues and is a common maintenance task for Boxster S owners.
7. Cooling System Issues
The Boxster S’s mid-engine layout requires a sophisticated cooling system, which, while effective, is prone to leaks and can suffer from issues related to aging plastic components. The radiators, hoses, and coolant reservoir are known points of failure, often due to age and exposure to heat over time.
Signs and Prevention: Low coolant levels, overheating, or puddles of coolant under the car may indicate a cooling system problem. Regularly checking coolant levels and inspecting the radiators for debris (especially if the car is frequently driven on rough or dusty roads) can help extend the life of these components. Replacement of worn hoses and coolant reservoir should be expected as part of long-term maintenance.
Buying Tips: What to Look for in a 2002 Porsche Boxster S
Verify IMS Bearing Replacement: Confirm whether the IMS bearing has been replaced with an upgraded version, as this is one of the biggest potential risk factors for engine failure.
Get a Professional Pre-Purchase Inspection (PPI): A PPI by a Porsche specialist is invaluable. This inspection can identify any impending issues with the engine, transmission, or convertible top that might not be obvious during a casual inspection.
Check Service History: A well-documented service history can reveal if major components like the RMS, clutch, and coolant system have been maintained or replaced. Regular oil changes and quality maintenance indicate the car has been well cared for.
Inspect for Signs of Water Damage: Look for dampness under the seats, check for moldy smells, and test the electronics to ensure they function as expected.
Convertible Top Operation: Test the convertible top multiple times, observing for any hesitation, unusual noises, or alignment issues.
Cost of Ownership: Is the 2002 Porsche Boxster S Expensive to Own?
Fuel Costs and Economy
The Boxster S is a high-performance sports car, so fuel economy is not its strong suit. With a combined average of around 20-24 MPG, fuel costs can be higher than for typical daily drivers, especially if driven aggressively.
Maintenance and Repairs
The 2002 Porsche Boxster S can be costly to maintain, particularly if it encounters any of the issues mentioned above. Maintenance such as oil changes, brake servicing, and coolant flushes are relatively affordable, but repairs like IMS bearing replacement, RMS repair, and convertible top motor replacement can be costly.
For those planning to DIY some maintenance, the Boxster S can be a satisfying project car with numerous parts available. However, for complex repairs, a certified Porsche mechanic is recommended due to the unique mid-engine design.
Insurance and Depreciation
Insurance costs for a 2002 Porsche Boxster S are generally moderate for a sports car, and the Boxster holds its value reasonably well, especially in good condition with documented service records and low mileage.
Potential Extra Costs
Owners should budget for regular upkeep of the cooling system, brakes, and suspension, as these wear more quickly in a performance-oriented vehicle.
Conclusion
The 2002 Porsche Boxster S offers an engaging driving experience with a strong performance pedigree. While it has several well-documented potential issues, many can be addressed with preventative maintenance or aftermarket upgrades, making the Boxster S a fantastic choice for those willing to invest the time and care into keeping it in top condition. By understanding and preparing for these common problems, prospective owners can enjoy the thrill of this iconic roadster without unwelcome surprises.