code p0191. car chokes at 50 miles/hr. lack of power. replaced fuel rail pressure regulator and fuel filter.

2004 FORD E-SERIES VAN
140,000 MILES
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THOMASDUAN
  • MEMBER
  • 1 POST
no other codes.replaced fuel rail regulator and fuel filter, still have the same problem. car choke at 45 mile, fell lack of fuel pressure.
Mar 10, 2012 at 12:23 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check the fuel pressure with a gauge if its within specs and also the TPS and MAF sensors
Mar 10, 2012 at 12:33 PM
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