Hey folks, juat changed out the brake booster in my wifes JK. Old one was making hissing noise. Problem fixed. Now I have new issue as of lately. Sometimes when she puts the jeep in reverse on an incline all four corners lock up! Figured out when I loosen the two nuts holding the master cylinder tonthe booster the pressure escapes and the brakes free up. She drove it all day fine. Then put in reverse in front of the house on slight hill. Didnit again! Anyone have any idea why it might do that with new booster? Help is appreciated!
