That's always fun when you think it's one engine and it's really another. One of the items we run into on here a lot with some brands.
The low pressure side on that car should run 46 - 80 psi
If you have a scan tool that can read live data a quick way to tell if it's the sensor is to watch the Low side fuel pressure, with the engine running it should read 70-80 psi and change rapidly within those numbers.
Also monitor the high pressure fuel pump command and desired and actual pressures. Start the engine and get it into boost. As soon as it hits boost the command should drop to zero. Monitor the desired and actual high side pressure as well. If it shows a desired pressure 2000+ but the actual pressure drops into 100-300, the sensor is bad.
Look up Ford TSB 14-0216 on this issue. Be advised that a bad sensor can easily cause engine damage, so with the symptoms you already have, replacement is probably a good thing to go after first. It also may be a good idea to call Ford, I think this might be covered under the emissions warranty.
Tuesday, May 14th, 2019 AT 12:59 PM
