Subaru Forester 2.0 Diesel Turbo: Problems, Replacement & Cost

Hey there, Subaru enthusiasts! Let's dive deep into the world of the Subaru Forester 2.0 diesel turbo. This engine has been a popular choice for those wanting a blend of fuel efficiency and Subaru's legendary all-wheel-drive capability. However, like any engine, it has its quirks and potential issues. So, let's explore the common problems, what it takes to replace the turbo, and the costs involved. Buckle up!

Common Problems with the Subaru Forester 2.0 Diesel Turbo

The Subaru Forester 2.0 diesel turbo engine, while robust, isn't immune to problems. Knowing these issues can help you stay ahead of the game and potentially save you from expensive repairs down the road. One of the most frequently reported issues revolves around the diesel particulate filter (DPF). The DPF is designed to trap soot and other particulate matter from the exhaust. Over time, it can become clogged, especially if the vehicle is primarily used for short trips where the engine doesn't get hot enough to regenerate the filter. Symptoms of a clogged DPF include reduced engine power, poor fuel economy, and the DPF warning light illuminating on the dashboard. Regular servicing and occasional longer drives can help mitigate this issue.

Another common problem area is the turbocharger itself. Turbos are complex pieces of machinery that operate under extreme conditions. Issues such as oil leaks, bearing failure, and wastegate malfunction can occur. Oil leaks can lead to a drop in performance and, if left unattended, can cause severe damage to the engine. Bearing failure often manifests as a whining or screeching noise from the turbo, while a malfunctioning wastegate can result in overboost or underboost conditions. Regularly checking the oil level and ensuring that the engine is properly serviced can help extend the life of the turbocharger. Additionally, using high-quality engine oil that meets Subaru's specifications is crucial.

Furthermore, the EGR (Exhaust Gas Recirculation) valve can also cause problems. The EGR valve is designed to recirculate a portion of the exhaust gas back into the intake manifold to reduce NOx emissions. Over time, the EGR valve can become clogged with carbon deposits, leading to poor engine performance, rough idling, and increased emissions. Cleaning or replacing the EGR valve can resolve these issues. It's also worth noting that the diesel injectors can sometimes become problematic. Dirty or faulty injectors can cause poor fuel atomization, leading to reduced power, increased fuel consumption, and rough running. Using high-quality fuel and adding fuel injector cleaner periodically can help keep the injectors clean and functioning properly.

Finally, it's essential to be aware of potential issues with the diesel fuel system. This includes the fuel pump, fuel filter, and fuel lines. A failing fuel pump can cause a lack of power, while a clogged fuel filter can restrict fuel flow, leading to poor performance. Regularly replacing the fuel filter and ensuring that the fuel system is properly maintained can help prevent these issues. By staying informed and proactive, you can keep your Subaru Forester 2.0 diesel turbo running smoothly for years to come.

Replacing the Turbo: A Step-by-Step Overview

So, your Subaru Forester 2.0 diesel turbo needs a new turbocharger? Don't sweat it! While it's a job best left to the pros, understanding the process can help you know what to expect. First, the mechanic will need to disconnect the battery and allow the engine to cool down completely. This is crucial for safety and prevents any accidental electrical shocks or burns. Next, they'll remove the various components that are in the way of accessing the turbocharger. This typically includes the intercooler, air intake, and various hoses and pipes. Careful attention is needed to avoid damaging any of these components during removal.

Once the access is clear, the mechanic will disconnect the oil and coolant lines connected to the turbocharger. It's important to have a drain pan ready to catch any spilled fluids. These lines need to be disconnected carefully to prevent any leaks or damage to the threads. Next, the mechanic will disconnect the exhaust manifold from the turbocharger. This often involves loosening and removing several bolts that can be difficult to reach. Special tools may be required to access these bolts without damaging them. After the exhaust manifold is disconnected, the mechanic will disconnect the downpipe from the turbocharger. This is another area where caution is needed to avoid damaging the exhaust system.

With all the connections removed, the mechanic can now remove the old turbocharger from the engine. This usually involves unbolting the turbo from the engine block or a mounting bracket. The old turbocharger should be inspected for any signs of damage or wear. This can help identify the cause of the turbocharger failure and prevent future issues. Before installing the new turbocharger, the mechanic will need to prepare it by priming it with oil. This involves filling the oil inlet with fresh, clean oil to ensure that the turbocharger is properly lubricated upon startup. The new turbocharger is then installed in the reverse order of removal, making sure that all bolts are tightened to the correct torque specifications. New gaskets and seals should be used to ensure a proper seal and prevent leaks.

Finally, the mechanic will reconnect all the hoses, pipes, and other components that were removed earlier. They'll double-check all connections to ensure that everything is secure and properly installed. The engine is then started, and the mechanic will listen for any unusual noises or leaks. The oil and coolant levels are checked and adjusted as needed. A test drive is performed to ensure that the turbocharger is functioning correctly and that the engine is running smoothly. The mechanic may also use a diagnostic scan tool to check for any error codes and ensure that all systems are operating within normal parameters. By following these steps, the mechanic can ensure that the new turbocharger is installed correctly and that the vehicle is running at its best.

The Cost of Turbo Replacement: Breaking it Down

Alright, let's talk money. Replacing the turbo on your Subaru Forester 2.0 diesel isn't exactly cheap, but knowing what goes into the cost can help you budget and make informed decisions. The biggest chunk of the expense is the turbocharger itself. Prices can vary widely depending on whether you opt for a new, remanufactured, or used unit. A new turbocharger from a reputable brand can easily set you back anywhere from $800 to $1500 or even more. Remanufactured turbos are generally more affordable, ranging from $500 to $1000, while used turbos can be found for even less, but come with the risk of potential issues.

Next up is the labor cost. Replacing a turbocharger is a complex job that requires specialized knowledge and tools. The labor time can vary depending on the mechanic's experience and the specific configuration of your vehicle, but it typically takes anywhere from 6 to 10 hours. At an average labor rate of $100 to $150 per hour, you can expect to pay between $600 and $1500 in labor costs. Keep in mind that some shops may charge a higher labor rate for specialized repairs like turbocharger replacement.

In addition to the turbocharger and labor costs, there are often other expenses to consider. These can include the cost of new gaskets, seals, hoses, and fluids. It's always a good idea to replace these components when replacing the turbocharger to ensure a proper seal and prevent leaks. These additional parts can add another $100 to $300 to the total cost. Furthermore, it's also a good idea to have the engine oil and filter changed at the same time. This ensures that the new turbocharger is running with clean oil and helps to prevent any premature wear or damage. The cost of an oil change can range from $50 to $100, depending on the type of oil used.

So, adding it all up, you're likely looking at a total cost of anywhere from $1550 to $3400 to replace the turbo on your Subaru Forester 2.0 diesel. It's always a good idea to get quotes from multiple shops to compare prices and services. Be sure to ask for a detailed breakdown of the costs, including the price of the turbocharger, labor charges, and any additional parts or services. Don't be afraid to ask questions and negotiate the price. By doing your research and being prepared, you can ensure that you're getting a fair price for the repair.

Tips to Prolong the Life of Your Turbo

Okay, you've got your Subaru Forester 2.0 diesel turbo purring like a kitten again. Now, how do you keep it that way? A few simple habits can significantly extend the life of your turbocharger and save you money in the long run. First and foremost, always use high-quality, synthetic engine oil that meets Subaru's specifications. Synthetic oil provides better lubrication and protection for the turbocharger's critical components, especially at high temperatures. Change the oil and filter regularly, following the manufacturer's recommended intervals. Regular oil changes help to remove contaminants and prevent sludge buildup, which can damage the turbocharger.

Another crucial tip is to let the engine idle for a few minutes after a hard drive before shutting it off. This allows the turbocharger to cool down and prevents oil from coking inside the turbocharger's bearings. Coking occurs when the oil overheats and breaks down, leaving behind deposits that can clog the oil passages and damage the bearings. Similarly, avoid revving the engine immediately after starting it, especially in cold weather. This gives the oil time to circulate and lubricate the turbocharger's components before they are subjected to high stress.

Regularly inspect the air filter and replace it as needed. A dirty air filter can restrict airflow to the turbocharger, causing it to work harder and potentially overheat. Also, be mindful of the fuel you're using. Using high-quality diesel fuel can help prevent injector problems and keep the engine running smoothly. Consider adding a fuel injector cleaner periodically to help keep the injectors clean and functioning properly. Furthermore, pay attention to any unusual noises or changes in performance. Whining, screeching, or a sudden loss of power can be signs of a failing turbocharger. Addressing these issues early can prevent further damage and potentially save you from a costly replacement.

Finally, consider getting a turbo timer. A turbo timer is a device that keeps the engine running for a set period after you remove the key, allowing the turbocharger to cool down properly. This can be especially beneficial if you frequently drive your Subaru Forester 2.0 diesel turbo hard. By following these simple tips, you can help prolong the life of your turbocharger and keep your Subaru running smoothly for many years to come. Take care of your turbo, and it will take care of you!