1998 Porsche 911 problems

Common 1998 Porsche 911 problems

The Porsche 911 1998, also known as the 996 generation, has several common problems that owners have reported over the years. While the 996 generation had significant improvements over its predecessor, the 993, it still had some inherent issues that can be costly if not addressed promptly.

One of the most well-known problems with the 996 generation is the weak intermediate shaft (IMS) bearing, which was carried over into early models of the 997 generation. The IMS shaft drives the camshafts, and when its bearing fails, it can cause extensive and expensive engine damage. This issue is more prevalent in the 996 models produced before 2006, and it's essential to check if the IMS bearing has been replaced or upgraded in any 996 or early 997 you're considering purchasing.

Another common issue with the 996 generation is cracked coil packs, which can lead to a misfiring engine. While a misfiring engine can be alarming, it's not necessarily a cause for panic. A specialist can diagnose the root cause of the misfire, and cracked coil packs are relatively inexpensive to replace. However, it's crucial to address this issue promptly, as a misfiring engine can lead to more severe problems if left untreated.

Oil leaks are also a common problem with the 996 generation, with the rear main seal being a frequent source of leaks. Valve cover leaks are another common issue, but they are relatively straightforward to fix on most models. However, removing the old gasket sealer from the valve cover can be time-consuming, so it's essential to budget for this repair if you're considering purchasing a 996 with valve cover leaks.

Interior electrical misbehavior is also a common problem with the 996 generation, particularly on cabriolet models. This issue can be traced back to a single control module located under the driver's seat, which can become water damaged over time. If you're considering purchasing a 996 cabriolet, it's crucial to check the condition of the control module and ensure that it hasn't been exposed to water damage.

Ignition switch failure is another issue that can affect the 996 generation, particularly on older models. This problem can cause the key to become stuck in the ignition switch, making it impossible to start the car. Replacing the electrical portion of the switch is relatively straightforward, but replacing the mechanical portion of the switch requires additional skills and is best left to a repair shop.

Finally, the rear spoiler malfunction is a common problem with the 996 generation, particularly on models with active rear spoilers. This issue can be expensive to repair, so it's essential to check the condition of the spoiler and the control module before purchasing a 996 with an active rear spoiler.

In conclusion, the Porsche 911 1998, or the 996 generation, has several common problems that owners have reported over the years. While these issues can be costly if not addressed promptly, they are relatively straightforward to diagnose and repair with the help of a Porsche mechanic. If you're considering purchasing a 996, it's essential to budget for potential repairs and ensure that you're buying a car that has been well-maintained and cared for.

Are old Porsche 911 reliable?

Spare parts are still easy to find but expensive when purchased from dealers. Properly maintained, early 911s can be reliable daily drivers that are bound to turn more heads than their modern counterparts, particularly in loud period colors.

Is a Porsche 911 expensive to maintain?

Yes, Porsches are expensive to maintain compared to most automakers' vehicles. Estimates from RepairPal show maintaining a Porsche costs an average of about 83% more than the industry average.

What years did Porsche have engine problems?

The Porsche IMS bearing problem years are from 1997 to 2005, with the M96 or M97 engine in these models being particularly susceptible. The single-row bearing used from model year 2000 through 2005 is of the greatest concern. However, any IMS bearing can and will fail if not replaced as part of regular maintenance.

What is the weakness of the Porsche 996?

The rear main oil seals were a weak point on Porsches of this era and leaks are not uncommon. Although the seal itself is an inexpensive part, labour for the replacement is costly because it is very difficult to access. If you spot an oil leak on the 996 you plan to buy, ask a Porsche specialist to look at it.

1998 Porsche 911 car problems categorized by type of issue

After analyzing all complaints sent to the NHTSA and researching popular Porsche 911 problems, we found that the most common problems with these 2023 model year vehicles are:

• Exterior lighting problems
• Service brakes problems
• Air problems
• Engine and engine cooling problems

The graph below shows statistics for all 1998 Porsche 911 vehicle components and the number of complaints received.