Range Rover Sport Lost Brake Assist in Traffic: The Booster Passed One Test and Failed the Next
See why a Range Rover Sport's intermittent hard brake pedal passed one basic test yet failed vacuum build, hold and repeated-pedal checks.
Tag brake booster vacuum leak
Brake Pedal Turns Hard and the Idle Changes? Trace the Booster Vacuum Path
A hard brake pedal plus an idle change links booster assist and engine air. Trace source vacuum, reserve, hose, check valve and booster before replacement.