Testing Your Hydraulic Power Booster

*VERY EASY*

If your vehicle has hydraulically assisted power brakes, you can test the hydraulic boost as follows:

  1. Park the vehicle on level ground in a well-ventilated area with the engine OFF, the parking brake engaged, and the transmission in PARK (for automatic) or REVERSE (for manual).
  2. Pump the brake pedal several times to deplete the accumulator.
  3. While lightly pressing your brake pedal, start the engine.
  4. The brake pedal should drop and then rise right after the engine is started. If it does not, check the level of power steering fluid; it may be low. If the power steering fluid level is full, check the booster for leaks. Have the hydraulic booster replaced if necessary.

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