Brake Pedal Pulsing
#11
#13
Likely if 2# of functional test fails, with the knowledge of feeling a pulsating at stopped. You will likely remove the hose to find the check valve not functioning correctly. If it was the brake booster itself, it would be different symptoms.
The pulsating is likely the vacuum only partially being released dude to a stuck/faulty check valve working at partial capacity. So every time you stop and it tries to purge the vacuum, the pressure is coming out in pulses, and/or the pulsating you feel is the pedal rising under your foot from the booster vacuum when it should be releasing(bad booster)
Pay attention to the direction your pedal travels when you do these tests.
Last edited by Deckoz; 12-16-2018 at 07:43 AM.
#14
Its a check valve, so it should only operate one way. Do, a brake booster test
Likely if 2# of functional test fails, with the knowledge of feeling a pulsating at stopped. You will likely remove the hose to find the check valve not functioning correctly. If it was the brake booster itself, it would be different symptoms.
The pulsating is likely the vacuum only partially being released dude to a stuck/faulty check valve working at partial capacity. So every time you stop and it tries to purge the vacuum, the pressure is coming out in pulses, and/or the pulsating you feel is the pedal rising under your foot from the booster vacuum when it should be releasing(bad booster)
Pay attention to the direction your pedal travels when you do these tests.
Likely if 2# of functional test fails, with the knowledge of feeling a pulsating at stopped. You will likely remove the hose to find the check valve not functioning correctly. If it was the brake booster itself, it would be different symptoms.
The pulsating is likely the vacuum only partially being released dude to a stuck/faulty check valve working at partial capacity. So every time you stop and it tries to purge the vacuum, the pressure is coming out in pulses, and/or the pulsating you feel is the pedal rising under your foot from the booster vacuum when it should be releasing(bad booster)
Pay attention to the direction your pedal travels when you do these tests.
Thread
Thread Starter
Forum
Replies
Last Post