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1994 Lexus ES300 Question: what is the brake booster
Answer #1G. T. Service Center (4188 Answers) , Stephenville, TX - (254) 638-3236ProfessorG July 17, 2014, 05:39Master
It is a round metal case that mounts to the fire wall and the master cylinder mounts to it. It has a diaphragm that uses vacuum to assist the brake pedal pressure allowing it to be applied with less pressure, calling it power brakes.
Replypmiller72, July 17, 2014, 06:39Rookie
So can it cause the car not to start
ReplyProfessorG, July 19, 2014, 12:36Master
Not that I can think of. Plug the vacuum line going to it and see if it makes a difference.