Low pressure code, but not running lean

[mallard8]

2021 GT been throwing me a low fuel pressure code (P008A) for a while now. Already and replaced my fuel pump and also the fuel injector rail sensor. Previous owner installed a DW400 pump, and the housing had a bunch of gunk and mess in it. After replacing the pump, I’m still getting codes. Could it possibly be electrical? I’m really not sure what to think At this point. Would really appreciate some insight. Attatched a recent datalog from the new pump

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[MiamiGT350]

Is there a bunch of gunk in the fuel filter too?

 

[K4fxd]

https://www.mustang6g.com/forums/th...-5-0-2017-2021-errors-p0087-and-p008a.167284/

Above is some info.

I also think it is most likely the high pressure pump and or sensor.

 

[mallard8]

https://www.mustang6g.com/forums/th...-5-0-2017-2021-errors-p0087-and-p008a.167284/

I also think it is most likely the high pressure pump and or sensor.

Everything looks fine on the fuel rails. Cleared KAM with my X4 last night and the code went away, got in it this morning and it read the P008A again.

 

[mallard8]

Is there a bunch of gunk in the fuel filter too?

There was a lot of gunk right under the pump and filter, but I just replaced the whole thing. Pump, send unit and lines.

 

[GregO]

Gunk ?
As in jelled or waxy fuel ?

 

[mallard8]

Gunk ?
As in jelled or waxy fuel ?

No, somehow as in dirt/grass or something. Previous owner had installed a DW400 pump, and the filter was quite dirty. Attatched a pic of what I found when I opened up the pump housing. Not sure how it got like that at all..
I suspect that previous owner removed a charger or blower of some kind due to some hoses being replaced with heater hoses in the engine bay.

 

[ice445]

All that gunk is probably inside the lines and hpfp unfortunately. Someone else on here mentioned that basket/pump replacements delete the only filter for the system

 

[mallard8]

All that gunk is probably inside the lines and hpfp unfortunately. Someone else on here mentioned that basket/pump replacements delete the only filter for the system

Yeah, I was hoping that I could avoid going deeper into the lines but that will likely have to be the next move I make. Would it be more effective to flush the system, or replace the hpfp?

 

[ice445]

Yeah, I was hoping that I could avoid going deeper into the lines but that will likely have to be the next move I make. Would it be more effective to flush the system, or replace the hpfp?

I'd do both to be safe. I think there's some one use lines and hardware too involved with the hpfp

 

[GregO]

What type of fuel pressure sensor is used and where is it located ?

 

[mallard8]

What type of fuel pressure sensor is used and where is it located ?

You mean the one I replaced? I replaced the one right along the fuel rail.

 

[mallard8]

I'd do both to be safe. I think there's some one use lines and hardware too involved with the hpfp

Okay, I’ll work on getting that next

 

[GregO]

You mean the one I replaced? I replaced the one right along the fuel rail.

What about the GDI pressure sensor ?

 

[mallard8]

What about the GDI pressure sensor ?

I believe that’s the one I replaced. At least the same thing comes up when I look it up lol

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