Question about 2000 Jeep Grand Cherokee

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My car seems to warp front discs? Serviced the

My car seems to warp front discs? Came with new discs when I bought it 3 years ago. These ones seem to have warped again. Checked calipers and pistons, seem to move in and out freely. Pads do not look oddly worn either. Don't want to buy more discs if the same thing is going to happen again? Is this common on these cars? And how do i fix this?

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  • yadayada
    yadayada May 11, 2010

    warped disks are caused by excessive heat build up, u must be living in either a hilly area or you are hard on brakes, there is no other reason.

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Check your rear brakes. If the rears are not adjusted or functioning properly, they will put more strain on the front brakes, thus heating the rotors up too fast. Since the rotors in the front cannot dissipate the heat fast enough, they will most likely continue to warp until the problem with the rear brakes is fixed. Always remember: when installing brakes you need to lube all of the key points. On disc brakes, lube the area where the pads sit in the hangar, make sure the clips are free of dirt and rust. Lube the pad backing (not the part that contacts the rotor!) and be sure to remove and lube the sliding pins on the caliper well. I personally like using AGS's Sil Glyde or CeramLube. These withstand heat the best. On drums, lube the metal side of the shoe that contacts the backing plate, and be sure to lube your adjusters well. Also, very important: if you have rear drums, make sure they are adjusted the right way, you dont want them to drag, but you dont want to go thru another set of front rotors again! Good luck, 99% of the time, too much focus is put on the front brakes and not the rears. Focus on the rears!

Thanks for asking!

Posted on Nov 13, 2009

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