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I have a 2006 Barina and have a grinding noise in the front when putting brakes on when slow down, I have had the front disc and pads replaced and back drums checked, My mechanic has had the car for 5 days and checked everything he can think of but still does it. any help would be appreicated.
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A grinding or rumbling noise can also be symptoms of a wheel bearing or constant velocity joint in a driveshaft. A worn wheel bearing can also cause a 'whistling' sound (as can a worn CV joint).
A grinding noise with brakes is either worn pads causing metal to metal contact on the brake disk/rotor, or the brake backing plate catching on a spinning rotor ... or a loose/missing anti squeal brake shim (they stop the pads from rattling and vibrating).
However, as you say a mechanic has looked at the brakes and can't find anything wrong .. I think I would begin to suspect a wheel bearing or constant velocity joint on the driveshaft (front wheel drive cars).
This sounds like a definite case of worn brake pads. They might have previously fitted pads with soft linings for better stopping power and if your truck is automatic the pads wear down faster on automatics than manual.Ask them to fit pads with harder linings if they have available, but you will have to machine those brake disc's to re-smoothen them or fir new ones(A better proposition) as they are most probably scoured from metal against metal and fitting new pads onto scoured disc's will not only make your brake drums run very hot, but also wear down pads faster than normal and cause poorer braking response.Or maybe that was the problem from the beginning, scoured disks from before a year ago! Check it out good luck.
Hello and welcome to FixYa!
As a first course of action, I strongly suggest that you check or replace the brake pads. If they are worn out, it tends to have metal to metal contact which can cause grinding sound.
Hope this helps and thank you for using FixYa! Have a good one!
Hello i would check your wheel bearings or sometimes called bearing hub .Jack car up prop the car with axle stands now remove your tires and rotors once removed wiggle you bearing hub left to the right your bearing hub should have minimal play one side to the other is obvious the looser play hub will be your noise you have been experiencing.most people call this road noise.
You did not mention working on the rear brakes, so I must assume that the rear brakes are still original equipment. Perhaps the grinding noise is coming from the rear.
Usually a grinding noise in a disc brake is caused from a rotor with a raised edge that froms from normal wear. The raised edge is not a big deal until you install NEW disc brake pads. All of the sudden you have a grinding noise everytime you apply the brake because the NEW disc pad is being ground down but the raised surface created from the OLD Disc Brake Pad. Most of the time the Brake repair shops turn rotors on the car when the pads are replaced and this grinding symptom does not manifest itself.
On and OLD set of disc brake pads over time that raised area on the rotor starts to flake / rust / corrode and can come in contact with the brake disc pad when the brakes are applied.
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