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fuel pump makes a funny noise and does not stop after 2 seconds


Thanks for the replies. For the relays, I have three new ones that I swapped since they are the same three and no changes. Maybe they are not good, but it would be surprising for all three.
For the ground, I could run a cable from the negative of the battery to the PCM to see if it would be better.
 
I would check your ignition switch, Ford is known for it to expand and it lets several contacts not connect as they should. Also check all of your grounds. If you want to go thru my build thread, I show where all of the grounds are. I also show where the Ignition Switch is at the bottom of the steering column. You just remove your sterring column cover to access it. I also show how you could fix your switch.

You will only here your pump run for a few seconds as it builds up pressure but it does run all the time. Of all the cars and trucks I have worked on thru the years, I have only had two that had bad computers. I think one was a Toyota and one on a Chevy. They just are not a high failure point from my experience.

If it just a noisey pump, check your fuel filter, filters need changed a lot more often then recommended. I have seen qutie a few times where truck runs, but at low speed as they just cant get enough fuel flow. Last week we changed the fuel filter on my sons motorcycle and what a difference it made on it. If you replace the fuel filter, try to blow thru it, you may not be able to as the filter element gets a waxy build up on it. Disassemble the fuel filter the old fuel filter and you will see what I am talking about and it will convince you to change them more often then recommended.
 
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Thanks for the reply. I just spent 2 hours looking up the wire colors and contact numbers on the PCM. Some match, but not all, so it's more complicated than expected. I'm a novice in car electrical systems, but I'm trying to follow the advice.
I'll look at the ignition switch tomorrow, but I couldn't find your rebuild thread by looking on your profile. If you have a link, I'd be happy to see it.
 
Try this. It's the pictures of his ignition switch.
 
Thanks for the link, I ordered a new ignition switch, hopefully this will solve my problem
 
So I changed the ignition switch and after looking carefully I rewired the fuel pump relay, the wires were exposed, now it starts, it doesn't run quite smoothly but it's already better, probably an adjustment to be made.
However, after about 4 minutes at idle it stopped when I put the gearbox in R to reverse it.
When I tried to restart it the starter motor was idling as if it lacked power, yet when the engine was running I tested the current and it was at 14.6V so I don't think it's the alternator that's the problem or the battery, it's a new one. I immediately thought of the TFI but it was cold so I don't think it's the one that's the problem, plus it's a new one as well as the distributor. Any ideas?
 

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