i've been having the same problems for the past year.
and i've replaced everything but the fuel pump.
after reading nathan's post i finally got my mechanic to check
the pump. the pressure is fine @ idle he let it idle for about
an hour but i guess it's not the same as driving it on the
highway bit since my GT has the exact same problem i told
my mechanic to go ahead with the pump.
I just got it back today ang I could hardly hear the pump
priming and not at all while running. I've always thought
that the pump
should always be audible.
well I hope this solves the problem. i would also like
to thank you all for hopefully ending this inconvenience I could finally cruise around my GT this summer