I have a Nissan Sylphy 2002 with ( QR20DD engine ). The problem I'm trying to diagnose is:
When I'm sitting on a traffic or when I keep my brake pedal pressed all the way down, it keeps solid as it should be. However, when I shift to N or P and the RPM get increased a bit, my brake pedal moves a bit further to the down. Same thing happens when I pressing the accelerator pedal and RPM get increased (N, P or D whatever gear).
I have checked all the vacuum lines and they are good. Only thing I need to confirm is: Is this a sign of a bad Brake booster? My Brake booster seems to be leaking vacuum?
Randomly I'm getting P1806 - Brake Vacuum Sensor (low).