garyrigden
Active Member
Right well when engine is off and you press hard on brake pedal the pressure stays firm but when engine is running and you press hard on pedal the pressure starts dropping away and the pedal moves towards the floor. Car has abs with warning light on all the time. Any ideas what would be causing this? I assume master cylinder is ok as you get firm pedal with engine off so was wondering if servo or abs modulator be could causeing these symptoms.
Urgent advice needed please
Urgent advice needed please