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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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10-25-2020, 03:09 PM | #1 |
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Rattling when decelerating
Hey guys sorry to add another FRS noise thread but I’ve searched and read pages of threads with no luck.
2013 FRS 6 speed M/T Car is 100% stock I’ve noticed that when I decelerate usually in 5th gear but also any gear, there is a rattle/buzz/vibration coming from the engine/trans. If I let off the gas quickly its louder but if I let off the gas gently the sound is reduced. It’s almost like something connected to the drivetrain moves back and forth until its rested. I do feel it in the shifter. It was much louder when I had rear diff bushings/shifter bushings so I removed them. If I clutch in while it’s buzzing it goes away. Any help or lead is appreciated! |
10-25-2020, 08:06 PM | #2 | |
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10-25-2020, 10:29 PM | #3 |
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Thanks for the info!
Car is 100% stock. Previous owner changed the clutch and resurfaced the flywheel 25k miles ago according to the receipts |
10-27-2020, 11:42 AM | #4 |
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If you push the shifter over while it is buzzing does it go away?
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10-27-2020, 01:34 PM | #5 |
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10-29-2020, 03:23 AM | #6 |
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Update: noise is apparent when at a dead stop of moving but sounds different when at a stop. Same rattle goes away when I clutch in.. clutch and throw out bearing were supposed to be replaced 15k miles ago
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10-29-2020, 01:05 PM | #7 |
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I'd suggest you check the heat shields and under panels and make sure they are bolted down tight.
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10-29-2020, 01:07 PM | #8 | |
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I agree since work has been done in recent history.
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10-29-2020, 01:48 PM | #9 |
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If it looks like a shit, and smells like a shit... I've got a good guess what you stepped in
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10-30-2020, 02:44 AM | #10 |
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Thanks for the input guys, I checked all the under panels and can’t find anything loose.
Previous owner out in an Action Clutch.. I wouldn’t even put those in my old Honda lol Here is a video in 5th gear, noise is heard when the gas pedal is released then eventually it “settles” down. If I release the gas pedal softly the noise is reduced Video: https://streamable.com/s9rigv In the video I accelerated in 5th, let off the throttle, accelerated and let off again |
10-30-2020, 01:01 PM | #11 | |
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10-30-2020, 02:16 PM | #12 |
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Are you sure your car doesn't support a "rattles and bangs when decelerating" tune? It's an alternative to "pops and bangs"..
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10-30-2020, 07:10 PM | #13 | |
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The odd thing is if I clutch in, the sound/vibration is gone. |
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