Question about Cars & Trucks
Check fuel pressure. If good, replace sensor. If bad, replace fule filter first, then pump if no improvement.
Posted on Oct 22, 2013
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Posted on Jan 02, 2017
SOURCE: 2006 Ford F-150 5.4 engine. code
2006 Ford F-150 5.4 engine: code P0191 fuel rail pressure sensor circuit range / performance
First step is to change the fuel filter and test the car. If the problem still occurs: The fuel pump driver module was corroded through from salt and was malfunctioning. Bought a new one and runs great. Problem fixed. See pictures below:
This is why salt destroys cars.
Posted on Dec 16, 2010
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