So before we start, Steve83...I know my signature/info isn't complete...I'm working on it. I have a 1992 F150 XLT Lariat with only midship fuel tank. As I stated in the title I've pulled those codes. I need help deciphering what they mean all together.

 

Is your EGR system complete, as in vacuum lines and electrical connections present? Is your O2 sensor (or sensors) present and connected? Did the truck come with only one tank originally or was one removed?

 

I found a broken vacuum line going into the throttle body...couldn't find any hose but I wrapped it with thread tape and electrical tape...seems to have fixed my fuel issue...

 

Was the vacuum line you taped green? If so, it supplies the vacuum that operates the EGR valve, that lets exhaust gases into the upper intake manifold, just downstream of the throttle body. That broken vacuum line could be the cause of one of your codes. There should be a vacuum line diagram in your engine compartment. What fuel problem was solved?

 

This video shows the EGR valve in detail.

 

It was for the "cprv"...also after vehicle running fine for hours, until I drove at highway speeds for about 5 min. Then fuel pressure hovered around 12psi. Limped it home. Really thinking fuel pump might be shot.

 

If the engine codes you have gotten are accurate, two of them are related to the EGR system, one is related to the O2 sensor and/or it's wiring and one is related to the circuit that activates your fuel pump relay. Is the line you taped a vacuum line or a hose? Is it the hose that goes to the throttle body from the EVAP canister? If it's a vacuum line, it could be related to the EGR codes. If it's a hose, it's venting fuel vapors from the EVAP canister, to the throttle body plate.

In relation to your fuel pressure issues, I would check the fuel pressure regulator, by removing the vacuum line from it and checking for fuel in that vacuum line. Also, check the vacuum line itself for it's overall condition and possible leaks.

Corroded wiring could be causing the fuel pump primary circuit issues. Look at the wiring to the fuel pump relay and check the common grounding point at the upper radiator support on the driver's side of the engine bay. Also clean the battery terminal connections and battery ground connections at the battery and engine block.

 

New relay, checked FPR(good), drives fine, then about 5-10 min, fuel pressure stays around 35, it starts starving for fuel and fuel pressure drops to 12psi, wires look good, grounds look good...how would the ignition module effect fuel pressure, if it would rather...

 

Fuel pressure shouldn't change based on ignition module issues. Since your code related to the fuel system is a primary circuit failure, I would locate the primary circuit, at the fuel pump relay, and test it with a volt meter, while the truck is running. When the truck goes into the failure mode of the fuel pressure dropping, I would try to stop and test it again. I know that's easier said than done. By the way, if any other forum members want to jump in here feel free.

 

It looks like your fuel pump relay gets it's ground from ground G104, which is on the driver's side inner fender, roughly below the hood hinge. If that ground looks good, I would think about pulling the ECM and having a look at the capacitors. If the capacitors look ok, I would try to test that primary fuel pump circuit with a volt meter.