P0191 Diagnostic Trouble Code Discussion for August 2015
Fuel Rail Pressure Sensor Performance
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| Help Request | Posted | |
| 2008 Ford F-250 Super Duty XLT 5.4L Poor Idle Quality, Hesitation, Stall, Misfire VIN: 1FTNX205X8 P0191: FRP sensor circuit range/performance. Had this truck come in for a misfire and found only 27 psi fuel pressure. We commanded the fuel pump duty cycle with IDS and could not get pressure any higher. We put 12v to the pump directly and pressure did not raise. So we replaced pump with motorcraft and ... |
August 13, 2015 |
