Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - Strange noise/vibration under heavy engine load

Panecki17 · 09-22-2012, 05:16 PM

The latest strange noise coming from my BRZ crops up while accelerating hard between 4k - 5.5k RPMs. It's a hard noise to describe, but it sounds like a combination of spring peeper frogs (not crickets) and a dial-up modem. Again, this only happens when the engine is under heavy load. It doesn't happen during normal driving/acceleration.

Any idea what might be causing this?

My first thought is that it might have something to do with the port injectors activating around these RMP's, or maybe it's just a vibration in the noise generator. I haven't done the noise generator delete yet, but I'll see if that helps.

09-22-2012, 05:16 PM	#1
Panecki17 Member Join Date: Aug 2012 Drives: Subaru BRZ Location: Boston Posts: 10 Thanks: 0 Thanked 2 Times in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Strange noise/vibration under heavy engine load The latest strange noise coming from my BRZ crops up while accelerating hard between 4k - 5.5k RPMs. It's a hard noise to describe, but it sounds like a combination of spring peeper frogs (not crickets) and a dial-up modem. Again, this only happens when the engine is under heavy load. It doesn't happen during normal driving/acceleration. Any idea what might be causing this? My first thought is that it might have something to do with the port injectors activating around these RMP's, or maybe it's just a vibration in the noise generator. I haven't done the noise generator delete yet, but I'll see if that helps.