87' VETTE BRAKE WARNING LIGHT

[rlvincent]

87' BRAKE LIGHT WARNING, AND SOMETIMES REAR HATCH WARNING? I recently replaced the Power Brake Booster and things worked fine. Now I have excessive pedal travel and BRAKE WARNING LIGHT????

 

[So Bay Vetter]

If you're not leaking fluid then it sounds like you have air in the line. I put SpeedBleeders on a few years back. 2 people, all four wheels, 10 minutes.

 

[Hib Halverson]

Typically, excess pedal travel after a booster replacement means the wrong (too short) pushrod got installed, however, that the brake warning is coming on indicates loss of pressure in one end of the system.

I'd start inspecting all brake components, incl. the ABS modulator in the well behind the driver seat, for leakage then I'd bleed the system including the master cylinder.

I'd also verify that the booster you installed was the correct unit for an 87.

 

[rlvincent]

Typically, excess pedal travel after a booster replacement means the wrong (too short) pushrod got installed, however, that the brake warning is coming on indicates loss of pressure in one end of the system.

I'd start inspecting all brake components, incl. the ABS modulator in the well behind the driver seat, for leakage then I'd bleed the system including the master cylinder.

I'd also verify that the booster you installed was the correct unit for an 87.

Everything worked fine for a period of time after the booster was installed. Why the delay in Excessive BREAK PEDAL travel, and the light coming on?