Hello, when I turn on my V50 2.0D MJ2006 after a cold night, the brake pedal is the first seconds (!!!!) hard. Only when I step on the engine 2, 3 times is everything normal.For this 2 to 3 questions: 1. Could it be the vacuum pump that it works nciht (or does not start in cold weather) 1.1 Does a new vacuum pump have to be registered in the Vida? 2. Does the engine itself produce a vacuum, which then gradually builds up? Where does it come from, is not a sucker engine. Thank you here an article of a newer series.. there was probably a valve in the vacuum pump to blame: http://www.autoservicepraxis.de/…r-13-000-ford-and-volvo-849818.html