The power brake system uses brake fluid stored in a hydraulic accumulator (basically a pressurized reservoir) at pressures around 2500 psi to provide pressurized brake fluid for power braking. These, and a few other related problems will be discussed below. Another not as common problem is the BRAKE and ABS lights illuminating briefly under hard or repeated braking. One relatively common problem with the braking system is a loss of power braking (often referred to as a “hard pedal”), accompanied by the red BRAKE and yellow ABS dash lights illuminating. The ABS part of the system is much more difficult to troubleshoot, and will not be discussed here. This article will discuss troubleshooting the power brake part of the braking system only. This means that a loss of power braking has nothing to do with the ABS computer, wheel speed sensors, etc. If the ABS part of the system is disabled, power braking will not be affected in any way. If there is a failure of the ABS part of the system due to a failed wheel speed sensor, open or shorted solenoid valve, etc, the ABS computer will disable the antilock part of the system, and turn on the yellow ABS light on the dash. None the less, the power braking part of the system and the ABS part of the system are nearly 100% independent of each other. Unlike modern ABS systems that use a standard vacuum brake booster and a separate hydraulic control unit (HCU) to provide the ABS, the Teves II system incorporates both the power brakes and ABS integrated into the master cylinder. The 1987-88 Turbo Coupe, as well as the early Thunderbird Super Coupes and some Lincolns from the era, use a Teves II electro-hydraulic system to proving both power braking and antilock braking. Troubleshooting the teves II electro-hydraulic braking system used on the 87-88 turbo coupes
0 kommentar(er)
