When I idle or i noticed if im sitting still and the fans kick on or something, the vac pressure will jump up and down repeatedly from -10 to -21. My pressure stays at -19 at regular though. Anybody might know what this problem is? I checked for leaks everywhere and there isnt one. Thanks in advance

 

VSV valve is opening and closing. Makes the gauge bounce all over all retarded

 

goootcha, what the hell is that lol. is there a way to fix this or what should I try and do?? Thanks