NO Fuel

[JuStBlAzIN]

Ok I searched and searched for the last 3 days..nothing..

Here it goes...Hope I make sense.

Brand new engine, putting back a stolen recovery typhoon. Bolted everything and up go to fire it, i have no fuel at the rail. The truck cranks, has spark at each plug. But the fuel pump wont turn on. Here is what i have done:

1: Hot wired the pump at the test location on the firewall. Pump worked and I had fuel.
2. Checked the fuel rail for a clog..clear rail.
3. Checked fuses...All work, ECM-B has power at all times, ECM-1 has power in ON position only
4. Replaced fuel pump relay...(since i dont know how to check them)

5. Checked connections on the fuel pump plug which connects to the relay
a. Orange -Hot (i got a light)
b. Black/white (ground) I got a light when hooked to a hot lead
c. gray(the ones that goes to the tester on the firewall..ground) same as black/gray
d. green/white(goes to ECM) i get nothing, this ones is shown to be a positive source..i get nothing out of it.(connection BA11/B+ on the computer, pg 168 on the supplement manual)

6. Checked all grounds on the engine harness. Got the one behind the cylinder head of the drivers side. The one from the drivers side cylinder head to the fire wall. Negative cable to the passenger side cylinder head. the ground right behind the battery to the sheet metal. and 2 that connect to the front of the engine near the alternator. Also checked these grounds with a light source to make sure they were grounded..and all were good.
7. Checked my positives. Have power at the starter. And have my power source going to the back of alternator.

So what is left to do?
Change computer?
Change ignition switch?

I am lost... any help would be great.

 

[ghettosled]

Re: NO Fuel

if i am not mistaken the fuel pump also ties into the oil pressure sender, so it's possible your circuit is broken there. i would have to look at my repair manual for exact wires, etc, but that seems like your problem if you can manually jumper it from the test lead but it just wont work when cranking.

 

[JuStBlAzIN]

Re: NO Fuel

if i am not mistaken the fuel pump also ties into the oil pressure sender, so it's possible your circuit is broken there. i would have to look at my repair manual for exact wires, etc, but that seems like your problem if you can manually jumper it from the test lead but it just wont work when cranking.

here is the diagram..looks like it is indeed taped into it. Do i change? or how do i test if it works?