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Rubbing sound from Brakes I assume. Tried Seaching...
Hey all! Hopefully someone can help me diagnose a problem with what I assume to be my brakes. After driving a few miles, I can hear a rubbing sound that will stop if I apply any pressure to the brake pedal, or if I turn the wheel slightly in either direction.
I jacked up the car tonight when I got home, and the pads are wearing evenly. Bearings look good, no play on the wheels. While in the air, when I spin the tire, there is a little resistance from the brake pads on the rotor. They do not glide smoothly. I am not sure if this could be the problem...? Any suggestions would be Greatly appreciated. My only thought would be a possible caliper issue? I am concerned about continuing to drive it like this, and it's supposed to be a great weekend. Have to take advantage of them when you can this time of year here in MI. ![]() Thanks in advance!!
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Kevin '84 Carrera RoW Coupe "I'd like to offer moral support, but I have questionable morals" ![]() |
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It could be a sticky caliper.
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Mark '83 SC Targa - since 5/5/2001 '06 911 S Aerokit - from 5/2/2016 to 11/14/2018 '11 911 S w/PDK - from 7/2/2021 to ??? |
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Would this make the pads wear uneven?
Would that cause the noise to happen all the time? This only comes after I have been driving for a while. Figured it had something to do with the heat being produced from the pads continually rubbing on the rotor...? ![]()
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Kevin '84 Carrera RoW Coupe "I'd like to offer moral support, but I have questionable morals" ![]() |
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Member 911 Anonymous
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Just my 2 cents, but get a helper and remove the pads and check the movement of the calipers. It sounds like the calipers are sticking.
1. When was the last time you replaced your Brake Fluid? 2. Did you lube the pins where the pads slide on? They may also be sticking.
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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Max Sluiter
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Could be old, swollen rubber flex lines for hydraulic fluid to the calipers. You pump them up after a few stops with the high pressure brake pedal but they are swollen and take longer to release pressure (overnight).
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance |
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Quote:
I did Not lube the pins. I wasn't aware I was supposed to. I just pulled the pads out to make sure they were wearing evenly & slid them right back in... Could that cause the sound I am hearing?
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Kevin '84 Carrera RoW Coupe "I'd like to offer moral support, but I have questionable morals" ![]() |
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Is this something I would be able to check visually?
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Kevin '84 Carrera RoW Coupe "I'd like to offer moral support, but I have questionable morals" ![]() |
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+1 to old rubber lines not letting the pads retract. Nothing you can see, it's internal. Buy a new set of stock lines from our host, and change them and the fluid all at the same time.
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John Snodgrass 1973 Porsche 911 "Barney" (race car for sale) 2008 Nissan Maxima - Daily Driver 1999 F350 Diesel Crew Cab - Tow Beast 1990 Airstream 36' Land Yacht - Home Away From Home |
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Is it a new problem? Could be a bit of rust on the rotors if driven on salted roads and put away for winter. That would likely go away on its own. More likely a warped rotor...but possibly a stuck caliper.
Also could just be a misadjusted/stuck parking brake.
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74 Targa 3.0, 89 Carrera, 04 Cayenne Turbo http://www.pelicanparts.com/gallery/fintstone/ "The problem with socialism is that you eventually run out of other people's money" Some are born free. Some have freedom thrust upon them. Others simply surrender |
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Mine were making a odd noise and after a day of searching, we found a rock stuck in the caliper.
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check all the calipers, I had a rock stuck in the calipers twice...
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1979 911 SC... 83 911 SC .... 82 911 sc.... Fiat 124 Spider Full Race |
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Member 911 Anonymous
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Yes, you should put some lube, lithium or 3M silicone Paste on the pins to help them slide in out as you use the breaks.
I agree with changing out the lines, if budget will permit of course. I changed mine to Stainless Steel. Opinions vary on this. I was told the SS lines would make the brake too responsive. I did not observe that much difference. Of course SS were more responsive but not over bearing. If you do not know when the fluid has been changed. I would do it as a precaution and start the clock on the fluid (2 year Schedule) This will also flush out any rubber residue and maybe help with your potentional residue in line opinion. You will see it when you flush it. I would do the Helper Old School technique, the pressurized bleeders will tend to deposit moisture into the system, which is not good. Apparently the compression of air caused condensation in the line of the Bleeder then it goes into Brake line system. Unless you buy a water filtered one which is expensive. Checking the caliper for debris is also a good idea when you check for consistant free movement with the helper.
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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