davidwebb

I have a new WRX STI 11th generation EJ20. Recently, I found the car will have a weird ZzzZzzZzz metal resonant sound at 3000 to 3100 RPM. The sound will not come out at cold start. After the car warm up, say on the highway for 5 minutes. I can hear a weird ZzzZzzZzz metal resonant sound at 3000 to 3100 RPM. It is not related to any gear as I can recreate the sound when the car stopped without shift into any gear. The sound will pop up definitely at 3000 to 3100 RPM. I have opened the hood and the sound seems coming from the intercooler or something very close to the intercooler. It is more on the right hand side (driver side, right in my country). There is no any leakage and the car can drive normally without any issue. I have taken a video and posted with the URL below. Any suggestion about this noise? It is normal for all WRX STI or it is from a valve some where in the car at 3000 to 3100 RPM? Any suggestions and advice are all welcome. Thanks a lot.

https://www.dailymotion.com/video/x7u520m

domino46

could be the turbo heat shield rattling

Don Clark

With only 770Kms on the odometer, I'd be going back to the dealer for proper diagnostics

davidwebb

Thanks a lot for the reply and I am new to a Subaru. Yes, I will return back to the dealer at 1000KM which is a for a regular oil change offered by the dealer. I will tell them the issue at that moment.

Before back to the dealer, I would like to know if this is normal for a Subaru. This is my first time driving a Subaru. I have a Ford and a Honda before and don't have any idea on the common issues in Subaru. After posted this thread, I have done some research around the internet. It seems that it is very likely a sound from the turbo heat shield. Some people even just say "Welcome to the Subaru world". Hope this is the cause of where the sound comes from. I just afraid it is from some other parts of the engine or something else.

Don Clark

You could investigate this
https://www.scoobynet.com/104464-buz...ml#post1147205