I have a Ford Taurus 3. 0L OHV VIN "U" it has a sharp surge while driving, from idle through the power band. While checking the fuel pressure Alldata listed the pressure as 30-55 psi key on engine off and 26-45 psi engine on. I get 60 to 61 psi key on engine off and 55 to 57 psi at idle and the pressure bounces up and down "at idle" from 55 to 57 psi. Alldata is kind of vague on troubleshooting the fuel pressure sensor.