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P0190 Diagnostic Trouble Code Discussion for May 2013

Fuel Rail Pressure Sensor Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0190
Help Request Posted
2003 Mercury Marauder 4.6L Hesitation, MIL Lamp on VIN: 2MEHM75V33
P0190: Sets at random mostly under accel last freze frame shows fuel pressure at 27psi. When driving fuel pressure will deep as low as 15 psi under accel on the mechanical fuel gage hooked in line. Main question is while does fuel pressure change so drastically when hot even at idle? whats good fuel pressure for this car?
May 29, 2013