If the PCM Power relay clicks (closes) when you turn on the key it is a good diode (it is OK).
If the MIL comes on when you turn on the key it is OK.

 

Thanks, subford.

 

Hi guys. I am back! I test the #2 relay at the fuse distri. Box (fender) I am getting power there. But when I turn key . I am not getting any power. we're do I go from here? I have only 2 hours left of daylight!

 

Does the fuel pump relay make (close) when you turn on the key and drop back out (open) ones second later each time you turn on the key?

 

I took off the relay and tested inside the box. Power present without key. I turn key no power. I insert relay I felt click when key on.

 

Key off. Felt click. ?

 

You still having trouble, perhaps the computer is the problem perhaps its not providing the ground rather than running the pumps continuously which would be common/normal failure mode found in computers, or simply suffers a bad connection at pin in harness connector at the PCM, or damaged someplace else along its path.

If you haven't yet ground out pin #6 at the eec test port (test port Located just behind the hood hinge on the drivers side if you don't know that yet) use any suitable section of wire will work to ground it out, pin 6 should be a light blue wire with a orange strip but use diagram above.

Ground it out then turn the key to "run" you should hear the pump run (make sure you test both tanks using your tank selection switch).

You hear relays or at least one relay click, that suggests you have what it takes at least up to the PCM relay.

If you've already done that test, you have ground out pin 6 at the eec test port turned the key to run and nothing happen? you need to post that please.

If the pump, either one of them works during said test? then you'd need to test the circuit between the fuel pump relay and the main harness connector at the PCM for continuity checking all connections.

 

Grounding Pin 6 won't work on an OBD-II vehicle.

 

Oh, missed that part.

 

Subford . I can not located EEC sel-test at the location you stated. We're else would it be I took off cruise control . It's not under any plug that looks like the one on the diagram ?

 

I study diagrams , went on line. Can not located plug !???

 

Vehicle is OBD-11.

 

Does any one knows if 96 f150 XLT 5.0 was equip with EEC self tests. ???

 

I never said that you had one. I said you do not have one after other said something about one.
There are two pins in the plug of the fuel pump relay that have power with the key on.
One is powered bu the power relay and the other is the power for the pumps.
The power for the pumps is shorted to the wire going to the fuel pumps by the fuel pump relay.
This relay is closed with a ground to the other side of the coil of the fuel pump relay.

That is why I asks, does the fuel pump relay click when the key is turned on and click again one second later.

I to think you may have a computer problem but I want you to do these test so we know if it is the computer or not.

 

It's does click when key on. Without the relay in. I have no power when I turn key on?