Brake Pedal Pulsation on Mitsubishi Diamante

A brake pedal pulsation may be noted on brake apply. This is commonly caused by warping of the front brake rotors. Our technicians remind us that re-machining (turning) the rotors can correct this issue but the repair may last only a short time as the thinner rotors would be even more prone to warping. Replacement of faulty rotors with high quality parts is often the best option in these situations.

RepairPal Verified
Average mileage: 104,000 (104,000–104,000)
13 model years affected: 1992, 1993, 1994, 1995, more1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
14 people reported this problem
1 person shared problem details
same description, pulsing at pedal, checked thickness of rotors for variance, checked runout (warped?) and found to be about .005-.006.removed & cleaned rotors and hub with 3M scotch pads & lacquer thinner. Sanded rotor working surface with sandpaper. Repositioned rotors until runout was within .003, coated with thin coat of spray lub like WD40 @ mating surfaces with a rag and tested. Smooth as a babies skin. Believe the problem was the trivial rust and paint (had painted w/caliper paint to protect from rust) which was worn off unevenly and runout (warped) of rotor.
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