Alright this is frustrating! Back to the beginning. The connector didn't seem to be the issue. I soldered on a new connector and connected it back and forth between the fuel pump on my truck, and i also was able to reach the brand new one i have laying around. Nothing...at all. Well, its intermittent. If the relay double clicks, the pump will prime and turn off as normal. If there is no relay click, then no fuel pump. If the truck manages to start, it will run but then shut down, and if i go to reprime the fuel pump in the ignition cycle, i might get lucky, but most times theres no double click of the relay (so no fuel pump priming). The relays are all fine. So this intermittent issue of them double clicking is the issue it seems, and that comes from the PCM?

IF i managed to make it out the driveway, it would let me sit again once the power to the fuel pump gets cut for some reason. Is this the PCM? I didnt think this year (1995) was advanced enough for the PCM to be talking to everything? Sure, it talks to the relays, and then it (relay) simply sends the signal to the fuel pump. But right now, 9/10 the relay wont prime the fuel pump (no double clicking). Back tracking from the fuel pump relay, all thats left is the PCM right? Idk, just seems so unlikely a PCM would fail on a truck with 160k miles. But unless you have any suggestions, ive tired and tested things so many times....

 

I went through similar trials, checks and double-checks and decided to swap out the PCM to see if it made a difference. I found a good used one with supposed low mileage on car-part.com with the same part number as the one that was on a '96 Dodge Dakota that I'm working on. Price was pretty low for the PCM from a salvage yard in GA and the PCM looked clean with no rust. Installed the salvage yard PCM and the fuel pump received current and ground and worked like it was supposed to. Your truck (1995) should be ODB1. After I had a suspected PCM issue on my '96 Ram 2500 4x4, I keep spares around for it just in case.. Given that its 27 years old, I figured that it's good insurance to have working PCMs around for it.

 

You could open it up and look for obvious problems. Fords of the era were notorious for leaking caps. On these Dodges? I don't know.

 

So from my last comment above, its been maybe three hours and it is now dark and "cooler." Wasnt that hot of a day to begin with. As you can tell by my last comment, the results in this current comment are the total opposite. So, the pump runs fine now, and relay double clicks most of the time as it should. Its interesting because the relay doesnt double click sometimes, but the truck still starts up even though i didnt hear the fuel pump. Its all very weird and i have no solution yet, and definitely wont drive it like this. I can bypass the fuel pump relay and bring the wire into the cab (so i can manually turn off the fuel pump when needed), but, i wonder what i will be damaging by doing this, since obviously the PCM (?) isnt letting it run normal (if at all) when the relay and fuel pump finally begin to work properly.

I guess i will get a used PCM same as mine, and if that solve this issue, then i guess that was the culprit? Idk. I'll order it, but feel free to add any other suggestions i havent already tried lol. Will update thread once the PCM arrives and is installed.

 

Test the lead going to the relay from the pcm. Pcm gives the relay a ground then the relay will engage. The relays only engage and disengage so not sure what you mean by double clicking. The pcm only engages it for second or two for prime and will stay on when running.

 

Your issue "sounds" like a wiring short between the PCM and the relay. The fuel pump relay should click only once and not double-click.

 

I could be wrong, but that sounds incorrect. It clicks once to prime the fuel pump, and then off again. Once you start the truck, the relay remains open and sends the constant 12v to the pump (or so all my testing has showed). The auto shutdown also does the same clicking

 

Okay so heres where im at: keeping the relay jumped, i can manually run the fuel pump and start up the truck since its successfully getting then 12v. So i really have nothing left to troubleshoot, besides the PCM with the same serial number, that will arrive in the next two days. If that doesnt solve the issue, then idk what to do! Will keep updated

 

I will check that as well, but have to figure out the wiring there. As for what you said, yes thats what im saying. It primes the pump and then clicks off to kill the 12v so that the truck doesnt have the fuel pump running when you simply turn on the ignition. When the truck is running, it will remain on and send the 12v to the fuelpump constantly (when its working lol). This is what my truck does, not sure if thats normal or not. The fuel relay and the auto shutdown relay both click on and off when turning to ignition

 

Yep. Auto Shutdown, and fuel pump relay will both engage for around three seconds at initial key on. After that, the PCM has to see the engine turning to re-engage them. (crank sensor.) If jumping the fuel pump relay will make it run, and the engine actually primes.... That's kinda bizarre. You have verified the pump does not get power while cranking the engine?