0 like 0 dislike
2.5k views
by

There are no performance issues, the engine always runs like a bird! However, if I drive it for some time until the engine is fully warm and then stop for a few minutes, when I restart the engine the check engine light comes on after a few seconds/minutes and the OBD reader reports code P0191.

If I reset it and continue my journey, the light does not come on again until I repeat the stop/start procedure. I've changed the fuel filter, fuel rail pressure sensor and the fuel cap but there is no difference.

Please help!!

Vehicle: 2005 Ford E450 Super Duty 6.9 litre V10

1 Answer

0 like 0 dislike
by (13.4k points)

P0191 Fuel rail pressure (FRP) sensor circuit perfromance

This code represenst the condition or the perfromance of the fuel pump, the fuel pressure will need to be tested the specification are engine running 28- 45 psi

 

 Here is a FRP this coded a P0191, this mean this FRP is still good, the solution for this is first make sure its vacuum line is connected and recieves vacuum. and check the fuel pressure.

Related questions

0 like 0 dislike
1 answer 741 views
1 like 0 dislike
2 answers 1.3k views
0 like 0 dislike
1 answer 3.7k views
asked Apr 2, 2018 by anonymous
1 like 0 dislike
2 answers 7.4k views
0 like 0 dislike
1 answer 301 views

36.2k questions

32.2k answers

1.3k comments

22.8k users

Need A Repair Shop?
Find local automotive repair shops in your area.
Does your car have Safety Recalls? → Check here
...