k today on the way to work im driving and my vacuum pressure wouldnt go below 10hg....even in 5th at like 2000rpm..? what could be causing this what should my vac be? boost till acts like it is reading fine...also along the way a couple times I never read vac pressure only 0-1 psi? thanks for any help?

 

I had something similar happen to me but it was only a small problem. the vacuum line running to my gauge was bent right between the gauge and the pillar. I straightend it back out and fed it back through and the gauge read normally. My vacuum is usually around 20 unless I'm driving at higher rpms like on the highway.