Thank you so much for this video. I will check my sensor harnesses out. I wonder if the new harness are a cut back, and Solder together. Or a plug and play ordeal.
Great video I'm having same issue same codes but I'm only getting 4.3v to the sensor do you think it could still be a bad ground? If I test voltage from ground on battery it goes up to 4.7v
Thanks appreciate it, uhmm, I think I would try and stick a back probe in ground signal wire on the sensor connector and ground to a known good ground while plugged in and see if you can clear code. Let it run and see what it does, are you able to read live data? If you can watch rail pressure and see what it is doing. If you don’t have a back probe I know harbor freight as an inexpensive kit that would help.
The same thing is kicking my butt, I have a 2013 6.7 power stroke giving me the same code that the fuel rail pressure sensor circuit high, I put in a new pigtail because all 3 wires were bare and touching, and also replaced the fuel rail because of shavings on the fuel regulator. And still reduced engine power and same code comes up. Also replaced the cp4. I’m out of options besides tracing wires or what do you think??
Yo, sorry that your having those issues, since you have already been through the ringer with the problems I would check the continuity from ecm plug to connector-> make sure you have resistance .02 .03 average for resistance in wire by itself and load test wire if possible OR run overlay wires from ECM pin out directly to sensor to rule out hidden harness damage that can’t be seen choice is yours just have to decide on which one. the diag tree will have a better way of testing but this is the easiest to explain. lol HOPE IT WORKS OUT 💪
So here’s what I found I looked up a wire diagram and 1 wire from the pressure sensor connects to the throttle valve and the other wire that’s intact with it in the harness is connected to the crank position sensor. So I checked the wire harness for the crank position sensor and sure enough oil had saturated the wires corroded them together. Fixed that and all was good.
@shakenbake2844 F- yeah brotha glad to hear you got it going man! That’s bad ass… finding the problem in those harnesses are a pain it the butt. They are real tight spaces and of course covered up. Either way glad you got it and saved your self a hell of a lot of money. That’s awesome 😎
Best advice I can give you is trace your wiring harness back from where it came from… last guy found an oil leak that had intruded the harness and was causing a short, they rail pressure will hardly ever get high enough to throw a high pressure code… with that being said it’s prolly a wire harness issue somewhere you can not see. It’s a pain but you will have to start taking things apart and trace the harness back look for anywhere it could be rubbing, pinching, coolant/oil leaks that are next to harness, and corrosion on pins to parts you replaced, also I have seen people stick multi meter probes in connectors and expand pins that will not make contact and cause theses issues.
This should be the part number for the 6.7 pigtail for rail pressure sensor Fuel Rail Pressure Sensor Connector - 2011-2022 Ford F250 Super Duty 6.7L V8 - Motorcraft 96694-02675383 BUT… the 08 is a 6.4 and that sensor is located under the passenger side valve cover mounted on fuel rail. Any auto parts store should carry it last one I bought from oreillys
Fuel Rail Pressure Sensor Connector - 2011-2022 Ford F250 Super Duty 6.7L V8 - Motorcraft 96694-02675383 Sorry I’m sure you got it by now, got busy and forgot to send
I would check your high pressure fuel side than, need to connect to ecm and watch you rail pressure and compare it too desired rail pressure, another thing I have seen cause low rail pressure other than the cp3 pump dying is fuel filter on Bottom of truck sucking air. I would check those 2 things first. Good luck 👍
@@blacksheepautoworx5304 had all fuel rails and injectors replaced changed cp4 to cp3 with the anti disaster kit and fass fuel system do you think the fuel tank may be clogged or dirty?
I wouldn’t think it is, chances are slim but definitely a possibility. I have seen bugs and debris get caught in lines and banjo fittings. Since you have a fass do you have a fuel pressure gauge? You can ohm out that pressure sensor see if it’s in spec and good. Find a way to read live rail pressure data and check under a load. Check high pressure fuel fittings for tightness and check fuel system as best as you can for suction side leaks and inlet of fass for debris. Or if you know someone with the same truck ask to borrow they pressure sensor and test or you can buy one but a little pricey not crazy but we all have financial obligations so I get it
Thank you so much for this video. I will check my sensor harnesses out. I wonder if the new harness are a cut back, and Solder together. Or a plug and play ordeal.
No problem my friend glad it helped, the new pigtails usually come with crimp and shrink tube kit from what I remember.
Great video I'm having same issue same codes but I'm only getting 4.3v to the sensor do you think it could still be a bad ground? If I test voltage from ground on battery it goes up to 4.7v
Thanks appreciate it, uhmm, I think I would try and stick a back probe in ground signal wire on the sensor connector and ground to a known good ground while plugged in and see if you can clear code. Let it run and see what it does, are you able to read live data? If you can watch rail pressure and see what it is doing. If you don’t have a back probe I know harbor freight as an inexpensive kit that would help.
The same thing is kicking my butt, I have a 2013 6.7 power stroke giving me the same code that the fuel rail pressure sensor circuit high, I put in a new pigtail because all 3 wires were bare and touching, and also replaced the fuel rail because of shavings on the fuel regulator. And still reduced engine power and same code comes up. Also replaced the cp4. I’m out of options besides tracing wires or what do you think??
Yo, sorry that your having those issues, since you have already been through the ringer with the problems I would check the continuity from ecm plug to connector-> make sure you have resistance .02 .03 average for resistance in wire by itself and load test wire if possible OR run overlay wires from ECM pin out directly to sensor to rule out hidden harness damage that can’t be seen choice is yours just have to decide on which one. the diag tree will have a better way of testing but this is the easiest to explain. lol HOPE IT WORKS OUT 💪
Thanks man! I’ll see what I can find and I’ll let you know if your interested
Sure keep me posted
So here’s what I found I looked up a wire diagram and 1 wire from the pressure sensor connects to the throttle valve and the other wire that’s intact with it in the harness is connected to the crank position sensor. So I checked the wire harness for the crank position sensor and sure enough oil had saturated the wires corroded them together. Fixed that and all was good.
@shakenbake2844 F- yeah brotha glad to hear you got it going man! That’s bad ass… finding the problem in those harnesses are a pain it the butt. They are real tight spaces and of course covered up. Either way glad you got it and saved your self a hell of a lot of money. That’s awesome 😎
So that conector with the Brooke wire is the 1 connects to the rail pressure si sensor?
Yes it is 👍
I have code p0088 on f250 2013 diesel 6.7
I have remplaced fuel rail,regulator and pressure switch and still doing same problem
Can you give an advice
Best advice I can give you is trace your wiring harness back from where it came from… last guy found an oil leak that had intruded the harness and was causing a short, they rail pressure will hardly ever get high enough to throw a high pressure code… with that being said it’s prolly a wire harness issue somewhere you can not see. It’s a pain but you will have to start taking things apart and trace the harness back look for anywhere it could be rubbing, pinching, coolant/oil leaks that are next to harness, and corrosion on pins to parts you replaced, also I have seen people stick multi meter probes in connectors and expand pins that will not make contact and cause theses issues.
Thank you so much
No problem hope you find it!
Do you have a part number for the plug?
I’m sure I have it at work I’ll send it tomorrow morning
Can you send it to me along with the location of that sensor I have a 2008 f250 with the same issue
This should be the part number for the 6.7 pigtail for rail pressure sensor
Fuel Rail Pressure Sensor Connector - 2011-2022 Ford F250 Super Duty 6.7L V8 - Motorcraft 96694-02675383
BUT… the 08 is a 6.4 and that sensor is located under the passenger side valve cover mounted on fuel rail. Any auto parts store should carry it last one I bought from oreillys
Fuel Rail Pressure Sensor Connector - 2011-2022 Ford F250 Super Duty 6.7L V8 - Motorcraft 96694-02675383
Sorry I’m sure you got it by now, got busy and forgot to send
I have the same codes but low fuel pressure and reduced power.
I would check your high pressure fuel side than, need to connect to ecm and watch you rail pressure and compare it too desired rail pressure, another thing I have seen cause low rail pressure other than the cp3 pump dying is fuel filter on Bottom of truck sucking air. I would check those 2 things first. Good luck 👍
@@blacksheepautoworx5304 Thanks
@@e-ticket5625 yeah np, if you run into anything just hit me up I’ll get back to you
@@blacksheepautoworx5304 had all fuel rails and injectors replaced changed cp4 to cp3 with the anti disaster kit and fass fuel system do you think the fuel tank may be clogged or dirty?
I wouldn’t think it is, chances are slim but definitely a possibility. I have seen bugs and debris get caught in lines and banjo fittings. Since you have a fass do you have a fuel pressure gauge? You can ohm out that pressure sensor see if it’s in spec and good. Find a way to read live rail pressure data and check under a load. Check high pressure fuel fittings for tightness and check fuel system as best as you can for suction side leaks and inlet of fass for debris. Or if you know someone with the same truck ask to borrow they pressure sensor and test or you can buy one but a little pricey not crazy but we all have financial obligations so I get it