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06-30-2016, 04:44 PM | #29 | |
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That "honking" noise, does it sound like a low pitch "whoop"? I'm sure there's a thread on here about that. just keep in mind, what you were doing when this happened. It'll help narrow things down. For the notchiness, try letting your car warm up and settle a tad longer. that's my 2 cents. |
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08-30-2016, 06:36 PM | #30 |
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Me Too...
My 2015 BRZ makes this noise occasionally. The first time I heard it was the day after I bought the car (new). After two years, it has become more frequent (or at least I notice it more).
The condition it happens most repeatably is after I've been cruising on the highway for a long time (like an hour or longer). If I exit the highway, the next several times I accelerate (at a light or stop sign) under moderate load, it makes this noise. The noise starts between 3000 and 3500 rpm and goes away above 4500 rpm. - It does it with 91 or 93 octane, regardless of brand. - As someone else said, it sounds like it is coming directly in front of the driver but not inside the cabin. - I don't notice a loss of power, but I lift off the throttle when I hear this. - After the car cools down (like overnight) it won't do it again for a long time (until I'm on the highway for a long time again). - Ambient temperature doesn't seems to matter, it happens in the summer and winter. [ame="https://www.youtube.com/watch?v=aeVtZQNu_Ss"]BRZ Engine Noise 3500-4500 rpm - YouTube[/ame] I remember searching on here two years ago after this happened the first time. It appears there are a few of us now with this issue. I brought my car to the dealer today to look at it, and they couldn't reproduce the noise (no surprise). |
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08-30-2016, 07:06 PM | #31 | |
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The Following User Says Thank You to Ultramaroon For This Useful Post: | radroach (04-26-2017) |
08-30-2016, 09:25 PM | #32 |
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I'll definitely try that. So the theory is the spring is at some kind of resonance in that RPM band? How did you determine this is the issue?
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08-30-2016, 10:34 PM | #33 | |
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I wonder if that spring isn't just a touch too short. A lot of effort went into designing the lightest possible clutch pedal. This could be a consequence.
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04-26-2017, 01:11 PM | #34 | |
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I recently had the same issue... If that was the spring, what was your fix? |
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04-26-2017, 01:33 PM | #35 | |
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After going back and listening to @C4RBON's clip again, I'll change my mind about his noise. I think I was reaching. The noise I get is much louder and obnoxious. How loud is yours?
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04-26-2017, 07:04 PM | #36 |
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Can confirm I've had this sound a couple times coming off the highway. I always thought it was aggressive vvt changeover noise, but if it's just the clutch spring then that's a relief!
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04-26-2017, 10:28 PM | #37 | |
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I know in my case it is the clutch spring. When it kicks in it's really obnoxious, much worse than that last clip but close to the second one. Do you have a tune because I'm stock and don't get the vvt noise.
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04-26-2017, 11:08 PM | #38 |
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@Ultramaroon No, stock. Both times were from coming off the interstate after a 3 hour drive and driving around 30-35 mph in 3rd gear, rattle like my cams were woodpeckers. It could have been that I was low on oil, since my first year I spread out my intervals sometimes to 8000 miles. Haven't had it happen since 2013-14, but it's definitely abnormal when it happened.
The 2nd video that @rburrow87 made shows it perfectly, though in my case my sounds were lighter since I was just cruising and maintaining speeds 30-35, and when I'd reach a certain rpm it would rattle like that. |
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04-26-2017, 11:39 PM | #39 | |
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Every time for me it was super hot underneath the hood.
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04-27-2017, 12:12 AM | #40 | |
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04-27-2017, 12:17 AM | #41 | |
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04-27-2017, 01:10 AM | #42 |
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You'll just check it the next time it happens. Don't hold your breath though. I think I'm out to lunch here.
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