05 gt p0191 error code

[Monera3v]

mms://multimedia.ford.com/seopts/Tech_37_250k.wmv they call it the jet transfer pump

@ 9:00 minute exact, you see the jet pump in the tank

[Monera3v]

Yeah about 1:30am sounds right. I was just putting along back from 99chromegt's BBQ. Too many OPP patrolling that night. I didn't even go over 120 and there were so many Douchebags that could have used a tune up that night lol

I switched the pump on my 06 it's not that difficult. Drive the car till it's damn near empty and then go for it.

Just remember when your knocking off the lock ring to use brass or wood. Don't use anything that can spark!

Did you have yellow fogs?

[Ray721]

Did you have yellow fogs?

Yup

[Ponyryd]

Try unplugging your frps and see what pressure the computer thinks it's at.

[Monera3v]

Try unplugging your frps and see what pressure the computer thinks it's at.

10-4

Home tomorrow, will strip and re test everything.

[Monera3v]

So.... I went out this morning and discovered a second issue. the harness next to the SJB was completely soaked with water, when i pulled apart the harness only but water came out of it.
Anyone has the pin out for that wire harness? I notice when i unhooked it the pump would not actuate!

Some of leads look corroded, I'm wondering if it getting poor contact

I used this thing called DUM DUM, kinda extreme sticky playdo they use back in days for windshields and fitted them under the cowl legs.

Hopefully that stop the water from getting inside.

blah So i tested the wiring

results were

with the key on, i'm getting 12.36 volt at PINk/black
0.05 volt drop

sending unit pins are getting 11.32 volt (does that make sense?)

[Monera3v]

This is with the Fuel rail pressure sensor disconnected,
Screenshot 2014-07-03 17.07.31.jpg
Fuel pressure sensor connected
Screenshot 2014-07-03 17.14.29.png
Fuel rail sensor on, pump disconnected and cranked to relieve fuel pressure from line(car ran for 3-5 second and stalled out)

as far as I can see.... when the FUEL RAIL PRESSURE SENSOR is connected the voltage dips into the negatives on keyon fuel pressure is 60 PSI , and while the engine running Duty is at 0.20% but still seeing 75 PSI at the rail

with the fuel rail pressure sensor disconnected , Seeing proper voltage , pump still running at 75% duty.


What I don't understand with the fuel pump disconnected... How come it seeing 25v at the pump

[Monera3v]

Attachment 1274

Fuel rail sensor on, pump disconnected and cranked to relieve fuel pressure from line(car ran for 3-5 second and stalled out)

[Ponyryd]

Thing you need to figure out is, why is the pump being commanded on when it shouldn't. Corroded wires can do this-yes, by, very common, especially at a splice, connector, module, or fuse box. What you may need to do is run some test wires from front to back to eliminate the possibility of corrosion causing these problems.

[Monera3v]

Here is another weird thing... so at one point it said -0.34v, rev it to 4k, value came back -3.5v (PID actual voltage at fuel pump)