no start no WTS
Postmaster
Joined: Dec 2012
Posts: 2,604
Likes: 3
From: Fort Polk Louisiana
Test your starter relay solenoid on the passenger fender. It could be possible you blew it out by pulling power from there to the fuel pump.
Just an idea.
Cargo Master
Joined: Apr 2010
Posts: 2,405
Likes: 4
Hate to state the obvious, but you have a bad power cable somewhere. I recently had this happen, ended up being a small junction box under my fuse box that split battery power. Corrosion had eaten it to nothing. Truck would go completely dark, as if someone had disconnected the batteries.
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Laughing Gas
Joined: May 2012
Posts: 855
Likes: 5
From: Central Oregon
Hate to state the obvious, but you have a bad power cable somewhere. I recently had this happen, ended up being a small junction box under my fuse box that split battery power. Corrosion had eaten it to nothing. Truck would go completely dark, as if someone had disconnected the batteries.
Do you happen to know what that little junction is called?
Something I can pick up from Napa or Ford?
Lead Driver
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
Just to rule out (or in) the obvious, have you LOAD tested BOTH batteries, in isolation from one another?
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Laughing Gas
Joined: May 2012
Posts: 855
Likes: 5
From: Central Oregon
If the OP were running the fuel pump from the actual contact circuit of the relay, the engine would only run while cranking. Most likely s/he is drawing power from the "always hot" terminal on the relay, which supplies power to ALL the truck's accessories. None of that power actually goes through the relay. That terminal just acts as a junction point. So the relay could be shot, and everything else would still work. If that terminal itself were somehow damaged beyond the point that would even operate as a junction point, then nothing would work.
Def. sounds like a main power issue as stated above. Could be at underhood fuse box as the video shows, or something as simple as a bad battery or battery ground connection. 'Course, this might actually indicate a problem at the connection at the starter relay. The relay itself might be fine, but if you used that junction point, and the nut is now loose, pretty-much EVERYTHING electrical on the truck will be intermittent.
Just to rule out (or in) the obvious, have you LOAD tested BOTH batteries, in isolation from one another?
Just to rule out (or in) the obvious, have you LOAD tested BOTH batteries, in isolation from one another?
I load tested them in December they both passed individually.
Cargo Master
Joined: Apr 2010
Posts: 2,405
Likes: 4
I am sure there is a part number, but it was just a little box with the main battery + wire coming into it and two wires coming out. When opened, it was just a stud with all the wires fastened under a nut. My mechanic found it (-10 and no heat in garage when it started acting up - lost patience in about an hour). He just cleaned all the wires up and spliced them all together, abandoning the box.
I don't know if your truck has the same little box, but somewhere between your batteries and your power distribution box you probably have cable rot.
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Laughing Gas
Joined: May 2012
Posts: 855
Likes: 5
From: Central Oregon
I am sure there is a part number, but it was just a little box with the main battery + wire coming into it and two wires coming out. When opened, it was just a stud with all the wires fastened under a nut. My mechanic found it (-10 and no heat in garage when it started acting up - lost patience in about an hour). He just cleaned all the wires up and spliced them all together, abandoning the box.
I don't know if your truck has the same little box, but somewhere between your batteries and your power distribution box you probably have cable rot.
I don't know if your truck has the same little box, but somewhere between your batteries and your power distribution box you probably have cable rot.
Thank you I will check to see if that box exist on the OBS. I doubt they have rotted out since my truck is pretty much rust free. Who knows though. Im hoping that nut may have come loose, maybe when I took the harness out in October. Im hoping this will be my issue, honestly other than that there has to be some fuse blown but my symptoms of having power for 1 sec I dont think reassemble a blown fuse
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Laughing Gas
Joined: May 2012
Posts: 855
Likes: 5
From: Central Oregon
Thank you for all suggestions made in this thread. I am extremely grateful.
What does Iirc mean?
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Laughing Gas
Joined: May 2012
Posts: 855
Likes: 5
From: Central Oregon
The truck still wants to play dead. The batteries have volts but no accessories have power.
Why is my truck refusing to use any power?
I went through my fuses w a multimeter and all but #22 gave me a measurement over 10volts. #22 measured in at .002 so I swaped #3 relay with #1. Nothing changed except now the fuses where unresponsive to the multimeter.
Is it possible my pcm just randomly died? I really don't think its my PCM. I am going to get a new ignition switch a well.
What fuse runs the ignition switch? I was unable to locate that in the manual.
Why is my truck refusing to use any power?
I went through my fuses w a multimeter and all but #22 gave me a measurement over 10volts. #22 measured in at .002 so I swaped #3 relay with #1. Nothing changed except now the fuses where unresponsive to the multimeter.
Is it possible my pcm just randomly died? I really don't think its my PCM. I am going to get a new ignition switch a well.
What fuse runs the ignition switch? I was unable to locate that in the manual.
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