Question about 1987 Toyota Corolla 2 Door

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Have an '88 corolla sedan (manual), after brakes used in quick succession, brake pedal looses all assistance and pedal goes hard, resulting in poor brakes...any ideas

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Vehicles equiped with power assist when braking you should nut pump brake, you shoull keep firm foot preasure on pedal,to avoid the problem you are having, how ever check the check valve in vacuum line and line for leaks

Posted on Sep 29, 2009

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This is probably normal. your power brake booster operates by storing engine vacuum to be used later to assist the brakes. when you pump the pedal repeatedly in a short period, the stored vacuum gets used up and it does not have sufficient time to build up the vacuum needed to effectively assist with braking. it generally takes a few seconds to build up sufficient vacuum from when you let off the brake pedal to when you press it again. however, brake boosters can fail over time (it's not uncommon, but it does happen), so if this is a new development for this vehicle, you may need to replace the brake booster or check the vacuum line and the check-valve between it and the engine

Posted on Sep 29, 2009


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