How to Replace a Proportioning Valve

Below guide will teach you How to Replace a Proportioning Valve . Please follow the instructions carefully.

Things You’ll Need:

  • Brake Fluid
  • Proportion Valve Switch
  • Shop Towel
  • Brake Bleeder Kit
  • Drain Pan
  • Socket and Ratchet Set
  • Flare Nut Wrench

Estimated Costs:

  • DIY Costs: Est. $41.95 parts only
  • Shop Costs: Est. $201.31 parts and labor

Image may not be specific to your car


  • Park the vehicle on a flat surface and set it on parking brake.
  • Take a floor jack and life up the front part of the vehicle with it. Chock the rear wheels as well.
  • Take jack stands and prop the vehicle up on them to ensure your safety while working underneath the vehicle.
  • Find the brake proportioning valve and clean it along with surrounding areas with the help of brake cleaner.
  • Instruct your assistant to depress and set free the brake pedal rapidly and in a mean while you examine the brake proportioning valve for any signs of leak.
  • Remove any wiring harness for the brake fluid warning light switch.
  • Also, remove hard brake lines from the valve.
  • Take the proportioning valve out by unfastening the bolts.
  • Take new proportioning valve and fix it on its place.
  • Now find the brake bleeder valve. You can find it on the passenger’s rear side.
  • Take a piece of clear plastic tube and fix it over the brake bleeder screw. Insert the other end of the tube into a container filled with brake fluid.
  • Instruct your assistant to depress and hold the brake pedal in a view to build pressure in the braking system.
  • Unfasten the bleeder screw and let the brake fluid to drop out through the bleeder screw opening.
  • Fasten the bleeder screw again.
  • Repeat this process till the point where you see no more air bubbles coming out.
  • You need to repeat the same process for other side as well.
  • Remove the jack stand and floor jack. Take a small drive to ensure that the repair work is doing well.
  • After a small drive, check the proportioning valve and its surrounding areas for any leakage.

Further Reading

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