B1G_xyz Posted June 15, 2018 Share Posted June 15, 2018 (edited) Just noticed this noise coming from my car when I was rolling downhill with the windows down. Not sure how long this was happening as the weather is finally nice to let down the windows. I linked a video below, hopefully you can make out the noise I'm taking about. https://1drv.ms/v/s!AjSwbNKewHsZwqMn_jn8mK7FOJ0arw Ps. yes I know I need new brake pads Edited June 16, 2018 by B1G_xyz Link to comment Share on other sites More sharing options...
Max Capacity Posted June 16, 2018 Share Posted June 16, 2018 Could be a wheel bearing/hub these cars are known for that. Next your making a exit ramp that's like a cloverleaf or a flyover, turn off the radio and listen to the sound, see if it gets louder as the cars weight shifts to the outside. That's puts more load on the hubs on that side. After that, jack the car up and see if you can wiggle the wheels, if so you have a bad hub. Check JMP's sticky about various parts, We have links there to which hubs to buy. FWIW, I keep a spare Timken front hub in the shed. There is a DIY thread on changing them too. Best case is, you just have a stone between the brake rotor and backing plate. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
NickCawks Posted June 16, 2018 Share Posted June 16, 2018 Visually inspect tires for any uneven wear. If tires are up to snuff, get them balanced. If the sound continues check the bearings as Max suggested. This is a far from full proof way to check the bearings, but the only full proof way to check is by pulling the knuckle off. I couldn't get the clip to play on my phone, but it sounds like it's a rotation sound. There is only a few things that rotate - wheel bearing, rotar, wheel. The problem has to lie somewhere in those parts. Link to comment Share on other sites More sharing options...
08SpecB_DE Posted June 16, 2018 Share Posted June 16, 2018 Sounds like wear sensor on the pads starting to contact the rotor. Link to comment Share on other sites More sharing options...
JustCallMeNick Posted June 16, 2018 Share Posted June 16, 2018 What I've learned about wheel bearings is: If you're not sure if it's bad, don't worry, it will get worse. Seriously. If you can barely hear it from inside the car then it's fine for a while. If you think it could be something else then that would be worth checking on though. Link to comment Share on other sites More sharing options...
B1G_xyz Posted June 16, 2018 Author Share Posted June 16, 2018 Visually inspect tires for any uneven wear. If tires are up to snuff, get them balanced. If the sound continues check the bearings as Max suggested. This is a far from full proof way to check the bearings, but the only full proof way to check is by pulling the knuckle off. I couldn't get the clip to play on my phone, but it sounds like it's a rotation sound. There is only a few things that rotate - wheel bearing, rotar, wheel. The problem has to lie somewhere in those parts.Brand new tires so can't check that yet Sent from my SM-G965U using Tapatalk Link to comment Share on other sites More sharing options...
B1G_xyz Posted June 16, 2018 Author Share Posted June 16, 2018 Sounds like wear sensor on the pads starting to contact the rotor.Correct I need new pads but there's another sound that I'm hearing, the only thing I could compare it to is a Cicada chirp Sent from my SM-G965U using Tapatalk Link to comment Share on other sites More sharing options...
Max Capacity Posted June 16, 2018 Share Posted June 16, 2018 I thought I could hear what sounds like ball bearing rolling in the races. We have a little personal electric cart here at work, after you drove it for a while and your coasting to a stop your could hear the balls in the left rear hub rolling. Sounded a lot like your video. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
B1G_xyz Posted June 16, 2018 Author Share Posted June 16, 2018 (edited) Could be a wheel bearing/hub these cars are known for that. Next your making a exit ramp that's like a cloverleaf or a flyover, turn off the radio and listen to the sound, see if it gets louder as the cars weight shifts to the outside. That's puts more load on the hubs on that side. After that, jack the car up and see if you can wiggle the wheels, if so you have a bad hub. Check JMP's sticky about various parts, We have links there to which hubs to buy. FWIW, I keep a spare Timken front hub in the shed. There is a DIY thread on changing them too. Best case is, you just have a stone between the brake rotor and backing plate.Just jacked the car up and the front wheels are solid. My father suggests maybe it's the new tires I have making the noise. They are Hankook ventus concept2 Edited June 16, 2018 by B1G_xyz Link to comment Share on other sites More sharing options...
apexi Posted June 16, 2018 Share Posted June 16, 2018 I think he might be right if you just started to notice the sound, and had those tires recently installed. Link to comment Share on other sites More sharing options...
08SpecB_DE Posted June 17, 2018 Share Posted June 17, 2018 Correct I need new pads but there's another sound that I'm hearing, the only thing I could compare it to is a Cicada chirp Sent from my SM-G965U using Tapatalk That's the noise I'm referring too. It could be the backing plate rubbing the rotor or pad hardware rubbing the rotor if you're confident it's not the pads. Link to comment Share on other sites More sharing options...
Max Capacity Posted June 17, 2018 Share Posted June 17, 2018 That's the noise I'm referring too. It could be the backing plate rubbing the rotor or pad hardware rubbing the rotor if you're confident it's not the pads. That could be a cause, It's easy to bend that plate if your not really careful. You can bend it without even knowing it. Have done that a number times over the many years. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
08SpecB_DE Posted June 17, 2018 Share Posted June 17, 2018 That could be a cause, It's easy to bend that plate if your not really careful. You can bend it without even knowing it. Have done that a number times over the many years. Could have happened when he got the new tires installed. Like you said, very easy to bend them. Link to comment Share on other sites More sharing options...
B1G_xyz Posted June 18, 2018 Author Share Posted June 18, 2018 I guess I'll check that out when I get some time. Would it be possible in the rear rotors also? Sent from my SM-G965U using Tapatalk Link to comment Share on other sites More sharing options...
Max Capacity Posted June 18, 2018 Share Posted June 18, 2018 Yes, the rears may even have some rust on the outer edge that weakens that and can be pulled off. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
1-3-2-4 Posted June 21, 2018 Share Posted June 21, 2018 Do you feel vibration in your steering wheel? Link to comment Share on other sites More sharing options...
B1G_xyz Posted June 22, 2018 Author Share Posted June 22, 2018 No vibrations Sent from my SM-G965U using Tapatalk Link to comment Share on other sites More sharing options...
B1G_xyz Posted July 14, 2018 Author Share Posted July 14, 2018 So I finally got around to checking the dust shield but couldn't see anything wrong with them, I took photos if you guys may want to see them Sent from my SM-G965U using Tapatalk Link to comment Share on other sites More sharing options...
B1G_xyz Posted July 14, 2018 Author Share Posted July 14, 2018 Not sure what to look for Sent from my SM-G965U using Tapatalk Link to comment Share on other sites More sharing options...
08SpecB_DE Posted July 14, 2018 Share Posted July 14, 2018 Can you determine if it's coming from the front or rear? You'll want to look for a real shiny spot to indicate the rubbing. If the noise is in the rear, take the caliper and rotor off and check the parking brake shoes and the entire backing plate. A lot of Subarus rust around the center ring of the rear backing plates. That rust pushes the backing plate out just enough to contact the rotor, but it will be hard to see that spot without taking the rotor off. Does the sound pitch change when you apply the brakes? Link to comment Share on other sites More sharing options...
B1G_xyz Posted July 14, 2018 Author Share Posted July 14, 2018 (edited) Can you determine if it's coming from the front or rear? You'll want to look for a real shiny spot to indicate the rubbing. If the noise is in the rear, take the caliper and rotor off and check the parking brake shoes and the entire backing plate. A lot of Subarus rust around the center ring of the rear backing plates. That rust pushes the backing plate out just enough to contact the rotor, but it will be hard to see that spot without taking the rotor off. Does the sound pitch change when you apply the brakes?It's really hard to tell where it's coming from as I'm listening to an echo bouncing back into the cabin, but I think it's the front wheels. I do need new brake pads so when I do those I'll check. Edit: yes the sound is dampened when I apply the brakes Edited July 14, 2018 by B1G_xyz Link to comment Share on other sites More sharing options...
08SpecB_DE Posted July 14, 2018 Share Posted July 14, 2018 Sounds like wear sensor on the pads starting to contact the rotor. Okay, back to my first guess lol Replace the front brakes and report back. Don't forget the grease, I see none on the rear brakes. Link to comment Share on other sites More sharing options...
Marvick08GT Posted July 15, 2018 Share Posted July 15, 2018 (edited) Do not put grease... Anybody ever ask themselves why the cars don't come with grease from the factory???? Use correct and properly functioning brake hardware and pads. If you want to use something, use sylglide ( clear and lightweight, barely a coating needed on the hardware) Edited July 15, 2018 by Marvick08GT Spelling Link to comment Share on other sites More sharing options...
08SpecB_DE Posted July 15, 2018 Share Posted July 15, 2018 We can agree to disagree on that Marv. A thin coating is all that is needed but I cringe at the thought of not lubing brakes. I did that a few times and they came back with a noise. I got my ass chewed out by my old boss so I've lubed them ever since That could be a difference between using factory and aftermarket hardware. Link to comment Share on other sites More sharing options...
Marvick08GT Posted July 15, 2018 Share Posted July 15, 2018 I didn't say not to use grease, . Grease is so loosely used these days that I thought I would clarify. Do not just use grease, the gray brake lube (tub) is ok, but for peace of my mind, Sil-Glyde is incredible. It is not messy and can even be used as clutch spline and shaft lube etc. Without brand new hardware that nobody wants to pay for these days, there will be issues if you don't clean and lube. Great job DE, right on Link to comment Share on other sites More sharing options...
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