P0191 Diagnostic Trouble Code Discussion for December 2016
Fuel Rail Pressure Sensor Performance
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| Help Request | Posted | |
| 2007 Mercury Grand Marquis LS 4.6L No Start, Stall VIN: 2MEFM75W87 P0191: Fuel pressure range/performance. ... running while driving. Fuel pressure very low, pump sounded like it was barely turning. Code P0191 set, assuming it set because of low fuel pressure. Replaced the fuel pump. Filter is good, did not replace. Same issue, pump barely turns, engine stumbles to... |
December 13, 2016 |
