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Re: When i brake at low speeds i hear a grinding "whomp...
Are you sure front and rear brakes are new and is your abs light on when this happens were the rotors machined do you have rear discs brakes or drum brakes
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The grinding noise could be indicative that the brake pads have worn off and the metal backing is grinding with the brake disc. This is further supported by the emergency brake light indicator which would illuminate (even when emergency/park brake is not engaged) when the brake fluid is low or the pads are too thin or gone (as in your probable case). Even though the grinding sound is only on the left side, it would be to your advantage to repalce both sides. Additionally, pls have the disc themselves checked as they may need re-surfacing.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Possibly abs motor running due to false activatin. these trucks had issues with wheel speed sensors... try and pull abs fuse and see if u still hear noise. if not then u will have to find which sensor is deffective.
you need to check to see if the new brake pads have been fitted correctly, some brake pads may go on either way & the metal side is on the rotor......hope this helps......cheers.
Suspect wheel bearing. They can be quite tricky to isolate as noise carries through coach. Try driving next to a large building with window down. Should be a growling noise that increases/ decreases with speed.
hi from uk the only thing i would be concerned about at this moment is the grinding when brakes applied ? this sounds very much like your brake pads are very low and most likely worne to the point of damage(grinding metal to rotor contact) is the sound you hear also the abs will sense this and due to unbalance of braking to each wheel abs will operate however i would have thought your car may have low pads warning indicator light system fitted but may not ? may i suggest considering age and possible high milage of your car ? if you have not had pads inspected recently? you do so asap b4 you drive any distance especially at speed ?
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