1994 Ford F-250 ECM or eec problems

Ok. Forget pin14 that was my mistake? Your correct 104 pins the diagram was just to show roughly what it looked like.I don't have a diagram of your plug. Should have said so, sorry? So we are getting power to the PCM correctly. We need to check why the light is not coming on? Do you see the DLC data link connector where the tech plugged in his scanner? Plug back in the PCM connector and check which wires are/are not getting power at DLC

The gray/w/red is the signal return from PCM this will give us the codes? The red w/green are power to DLC and power to MIL so i'm guessin the MIL bulb has blown because the wire has power going through it? I'm showing a white/purple wire for the signal in to PCM from DLC/scan tool . So theoretically the PCM is working and the DLC has power to it so your tech should have got a link. It could be that he didn't have the correct scanner Diesel cars are different untill 2004 when they became intergrated into the generic system. Do you think you could read the codes in the step's I posted earlier using a voltmeter?

No problem I have sent you a private message for the Email address

I never recieved any PM, sorry i had to go out last night ? let me know if you can see this any better ?

I seem to be having trouble getting my emails. I'm notified by email when people respond but I seem to be getting them late for some reason. Sorry i'm looking into it. Also I cannot find the hook up diagram for your STI connector. I'm going to ask another mederator to assist. We be lettting you know soon

Sorry about the time frame with reply. I have been waiting on a reply from a colleague with computer problems and the holidays etc.. I still haven't got the start off sequence for flash/VOM coding the PCM. So in the meantime lets go back to basics with a few check's. Could you crack open an injector pipe and turn over the engine a couple of times to make sure we are getting fuel into the chambers? If we are getting no fuel try putting a wire (jumper)between the 2 terminals on the oil pressure switch wires (loop the terminals together to simulate a connection) on the wires to switch not the actual switch. And try and start the vehicle again with injector pipe back on and tight. Let me know

Hey.

I suspect the fuel pump is the fault if you are not getting fuel to the filter assembly !! The pump is a mechanical pump using a camshaft lobe and a diaphragm to pump fuel ..the PCM controls fuel injection and glow plug control !!

The fuel system used on 7.3L Direct Injection (DI) turbo diesel engine is:
Controlled by Powertrain Control Module (PCM).
Comprised of a two-phase fuel pump.
Uses a one-piece fuel filter, water separator and fuel heater assembly.
Fuel is drawn from fuel tank by fuel pump, then under low pressure is circulated through fuel filter and back to fuel pump to be circulated under high pressure to cylinder head fuel galleries. From there, fuel is delivered to combustion chambers through electronically controlled/hydraulically actuated fuel injectors. A vacuum switch mounted on fuel filter housing monitors vacuum in fuel filter. When vacuum exceeds 7 psi, vacuum switch closes, causing PLUGGED FUEL FILTER indicator on instrument cluster to illuminate. The cylinder heads are specially designed to incorporate electronically controlled/hydraulically activated fuel injectors located near center of combustion chamber.

Fuel Pump
The 2-phase type fuel pump is comprised of the following:
Fuel inlet (from fuel tank).
Inlet check valve.
Diaphragm, diaphragm rod and diaphragm spring.
Piston and piston spring.
Low-pressure inlet (from fuel filter).
Low-pressure inlet check valve.
"O" ring, oil seal and fuel seal.
Camshaft actuated tappet.
High-pressure outlet check valve.
High-pressure outlet (to cylinder head).
Low-pressure outlet check valve.
Low-pressure outlet (to fuel filter).
Fuel is drawn from fuel tank by diaphragm section of fuel pump. The fuel pump circulates fuel at about 3-10 psi (21-69 kPa), first through fuel filter and then back to second stage of fuel pump. During second stage, piston-actuated section of fuel pump supplies fuel at a pressure of about 40 psi (275 kPa) into cylinder head fuel galleries.

hope this helps ... let me know