P0191 Diagnostic Trouble Code Discussion for April 2009
Fuel Rail Pressure Sensor Performance
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| Help Request | Posted | |
| 2007 Dodge Ram 3500 ST 5.9L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3D7MX48CX7 P0191: Fuel rail pressure sensor performance. ... idle, it feels like a dead miss at idle, but mostly clears up over 1k RPM and under load. There were no active codes, but i did find P0191 in memory- Fuel rail pressure sensor performance. Tried shutting off injectors with scanner, when cyl #1 or #4 are sh... |
April 02, 2009 | |
| 2003 Ford Focus SE 2.0L Cuts out, Misfire, MIL Lamp on VIN: 1FAFP34303 P0191: fuel pressure too high. vehicle has intermitent hesatation and now misfire. hesatation first noticed at cruise speed durning downshift. stubbling and misfire noticed at latter date when coming off idle speed. Code p0004 pressure module was found under KOER test but can not find discr... |
April 02, 2009 | |
| 2003 Ford Focus SE 2.0L Cuts out, Misfire, MIL Lamp on VIN: 1FAFP34303 P0191: fuel pressure too high. vehicle has intermitent hesatation and now misfire. hesatation first noticed at cruise speed durning downshift. stubbling and misfire noticed at latter date when coming off idle speed. Code p0004 pressure module was found under KOER test but can not find discr... |
April 03, 2009 | |
| 2007 Dodge Ram 3500 ST 5.9L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3D7MX48CX7 P0191: Fuel rail pressure sensor performance. ... idle, it feels like a dead miss at idle, but mostly clears up over 1k RPM and under load. There were no active codes, but i did find P0191 in memory- Fuel rail pressure sensor performance. Tried shutting off injectors with scanner, when cyl #1 or #4 are sh... |
April 06, 2009 | |
| 2004 Ford Freestar SES 3.9L Hesitation, Stall VIN: 2FMZA57604 P0191: fuel rail circuit performance. ... nuts - this new fuel system design is confusing enough - now i think the pump is failing - but i tapped into fuel rail - pressure never drops like a failing pump should... i started with hesitation - then bucking, jerking & finally dying & chk eng ... |
April 07, 2009 |
