Is 30 psi fuel pressure too low for a 1995 Pontiac transport with 3800 engine?

Yes, 30 psi is generally too low for a 1995 Pontiac Transport with a 3800 engine. The specified fuel pressure for that engine and year is typically in the range of 35-45 psi, though it's always best to consult your vehicle's repair manual for the exact specification. A pressure that low could lead to poor performance, rough running, hesitation, or even a no-start condition. You should investigate the cause of the low fuel pressure.