^+1 on just replacing the regulator, its 17 years old, so its done its thing after all of those years.
While your there with the lines disconnected, make sure the return line to the fuel tank is clear/unobstructed, so that the pump isn't working against itself trying to pump fuel back to the tank in this return type system.
If you continue to have peoblems, or you want to trouble shoot the problem further before replacing the fuel pressure regulator, visit Harbor Freight, they have an inexpensive fuel pressure gauge for about $19, that'll work fine if you connect things
with some ptfe ribbon dope on the threaded fittings so they don't weep.
Keep us posted on your trouble shoot.
94 Taurus GL 3.8L PEP204A
99 Ranger XLT 4dr 4.0L 5spd Auto
Payload & Tow Pkg
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