Ford Mustang 1994-1998 Repair Guide

Brake Pressure Control Valve


See Figure 1

Clean, high quality brake fluid is essential to the safe and proper operation of the brake system. You should always buy the highest quality brake fluid that is available. If the brake fluid becomes contaminated, drain and flush the system, then refill the master cylinder with new fluid. Never reuse any brake fluid. Any brake fluid that is removed from the system should be discarded. Also, do not allow any brake fluid to come in contact with a painted surface; it will damage the paint.

Brake fluid contains polyglycol ethers and polyglycols. Avoid contact with the eyes and wash your hands thoroughly after handling brake fluid. If you do get brake fluid in your eyes, flush your eyes with clean, running water for 15 minutes. If eye irritation persists, or if you have taken brake fluid internally, IMMEDIATELY seek medical assistance.

On models equipped with an Anti-lock Brake System (ABS), if during brake system service, or because of a fluid leak, the level of fluid in the system ever falls below that of the Hydraulic Control Unit (HCU), refer to the bleeding procedure in the ABS portion of this section. To properly bleed the HCU, an expensive scan tool is necessary; take this into consideration when contemplating brake system service. However, if only the brake pads, calipers, master cylinder, and other non-ABS components are being removed and installed, bleeding the HCU is not necessary and, therefore, the scan tool is not necessary.

Click image to see an enlarged view

Fig. Fig. 1: Cross-sectional view of the internal components of the brake pressure control valve


  1. Detach the brake fluid lines from the valve.
  3. Remove the valve mounting nuts, then pull the valve off of the frame member.

To install:
  1. Position the valve on the mounting studs, then install the mounting nuts. Tighten the nuts to 91-142 inch lbs. (11-16 Nm).
  3. Connect the brake fluid lines to the valve and tighten the line fittings to 124-212 inch lbs. (14-24 Nm).
  5. Bleed the hydraulic brake system.