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P0191 Diagnostic Trouble Code Discussion for January 2009

Fuel Rail Pressure Sensor Performance

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Trouble Ticket Help Requests for DTC P0191
Help Request Posted
2005 Ford Freestar S 3.9L Cuts out, Stall VIN: 2FMZA50605
P0191: fuel rail pressure range performance. Hello I have this freestar acts like it is running out of fuel sometimes, can occur at road speed or at idle. Recent fuel filter replacement found the filter was 90% clogged. Fuel pressure is low mostly hovers around 28 psi at idle 40 psi key on engine off. My...
January 06, 2009
2000 Mercury Sable GS 3.0L No Start, Hesitation VIN: IMEFM55S9Y
P0191: injector pressure sens perf. ... condition. Both codes PO191 P1237. Cleared codes car fine . I let it run for 2 hours then power braked it . The car stalled and would not restart. Let sit for 2 mins started back up. Car reset the 1237 code but not the other. Car is supposed to have a driv...
January 09, 2009