The brake pedal may pulsate when the brakes are applied. This is most commonly caused by the front brake rotors warping. Resurfacing the affected rotors may correct the problem for the short term but replacement would generally considered a longer term solution.
Car Problem Reports
Mitsubishi Eclipse Brake Pedal Pulsation
Mitsubishi Eclipse Problem
Average Mileage: 99,750 mi (50,000 mi - 139,000 mi)