[richtazz]

I agree with the fuel pressure regulator theory. The fuel pump runs constantly fromt he time the car is started until it is shut off. The fuel pressure regulator closes under heavy throttle (low vacuum signal) to keep the fuel from returning to the tank under high demand, and opens to allow it to return under light load (high vacuum signal). Before changing it though, check for vacuum at the regulator, as a cracked, disconected or collapsed vacuum hose will cause the same symptoms as a bad regulator. My system is to always try the simple, cheap stuff before changing expensive parts.