The 2017 Subaru WRX is well-known for its performance and power, much of which comes from its turbocharged engine. However, as with any high-performance component, the turbocharger in the WRX can experience issues that impact the vehicle's overall performance. In this article, we’ll explore common turbocharger problems specific to the 2017 Subaru WRX, symptoms to watch for, and solutions to keep your WRX running at its best.
1. Overview of the Turbocharger System in the 2017 Subaru WRX
The turbocharger in the 2017 Subaru WRX is designed to increase engine power by forcing more air into the combustion chamber, resulting in greater efficiency and performance. However, this complex system is subject to significant stress, leading to potential issues over time. Understanding these issues can help you maintain your WRX and avoid costly repairs.
2. Common Turbocharger Problems in the 2017 Subaru WRX
2.1. Turbo Lag and Delayed Response
Symptoms: One of the most common issues WRX owners report is turbo lag, where there’s a noticeable delay between pressing the accelerator and the engine’s response. This can result in a lack of immediate power, especially at lower RPMs.
Causes: Turbo lag is often caused by the time it takes for the exhaust gases to build up pressure and spin the turbocharger. Factors such as a dirty or failing turbocharger, clogged air filters, or issues with the turbo’s wastegate can contribute to this problem.
Solution: Regular maintenance, including cleaning or replacing air filters and checking the turbo’s components, can help reduce turbo lag. If the issue persists, it may be necessary to inspect the turbocharger for wear and consider upgrading to a more efficient unit.
2.2. Turbocharger Oil Leaks
Symptoms: Oil leaks are a serious concern with turbocharged engines. Signs of an oil leak include blue smoke from the exhaust, reduced engine performance, and oil spots under the vehicle.
Causes: Oil leaks in the turbocharger can be caused by worn seals, excessive oil pressure, or a clogged oil return line. These leaks not only reduce the efficiency of the turbo but can also lead to engine damage if left unaddressed.
Solution: Inspect the turbocharger seals and oil lines regularly. If you detect a leak, it’s crucial to address it immediately by replacing the seals or cleaning out any blockages in the oil return line. Using the correct grade of oil and maintaining the proper oil pressure can also prevent future leaks.
2.3. Overboost and Underboost Conditions
Symptoms: An overboost condition occurs when the turbocharger produces more boost pressure than the engine is designed to handle, while underboost indicates the turbo is not producing enough pressure. Symptoms include a check engine light, loss of power, and unusual engine noises.
Causes: Overboost can be caused by a malfunctioning wastegate, which fails to regulate the boost pressure properly. Underboost might result from a leak in the intercooler piping, a faulty boost control solenoid, or a failing turbocharger.
Solution: Diagnosing boost-related issues often requires connecting the WRX to a diagnostic tool to read the error codes. Depending on the cause, you may need to replace the wastegate, boost control solenoid, or repair any leaks in the turbo system.
3. Preventative Maintenance Tips
3.1. Regular Oil Changes
The turbocharger relies heavily on engine oil for lubrication. Regular oil changes using high-quality synthetic oil can prevent wear and tear on the turbo’s moving parts. Subaru recommends changing the oil every 3,000 to 5,000 miles for turbocharged engines to ensure optimal performance.
3.2. Allow the Turbo to Cool Down
After a spirited drive, it’s important to let the engine idle for a minute or two before shutting it off. This allows the turbocharger to cool down gradually, preventing oil from burning and coking in the turbo lines, which can lead to blockages and eventual failure.
3.3. Monitor Boost Levels
Installing a boost gauge can help you monitor the turbocharger’s performance and detect any anomalies in boost pressure. Catching issues early can prevent more significant problems down the road.
4. Conclusion
Turbocharger issues in the 2017 Subaru WRX can range from mild inconveniences like turbo lag to more serious concerns like oil leaks and boost pressure problems. By staying vigilant and addressing these issues promptly, you can ensure that your WRX continues to deliver the thrilling performance it’s known for. Regular maintenance, combined with an understanding of common turbocharger problems, will keep your WRX running smoothly for years to come.
FAQs
Q1: How much does it cost to replace the turbocharger in a 2017 Subaru WRX?
- A: The cost of replacing a turbocharger in a 2017 Subaru WRX can range from $1,500 to $3,000, including parts and labor, depending on the severity of the issue and whether you choose an OEM or aftermarket turbocharger.
Q2: Can I upgrade my WRX’s turbocharger for better performance?
- A: Yes, upgrading the turbocharger can significantly increase your WRX’s power. However, it’s important to pair the turbo upgrade with other modifications like a custom tune, upgraded fuel injectors, and a performance intercooler to ensure reliability.
This article provides a detailed overview of common turbocharger issues in the 2017 Subaru WRX, with actionable solutions and preventative tips, making it a valuable resource for WRX owners and enthusiasts.