Running diagnostics for fuel pump primer not shutting off...

L\Bronco

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Not to hijack this thread but would preemptively changing the capacitors on a fully running truck be wise?
Thats a personal preference thing. If you look at number of failures compared to how many are out there, its pretty low. If you are successful, you wont be out too much, (except time) however, de soldering and resoldering on an old board is risky at best.
Your call.
Cheers
 
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griff

griff

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Not to hijack this thread but would preemptively changing the capacitors on a fully running truck be wise?
I understand and I always appreciate feedback. After looking at the caps (see photo) I made the decision to give it a shot. This image shows the positive connector is fully broken off & leaking. That made the decision a lot easier. The 2nd photo shows all three replacements. I'll report back once it's installed tomorrow.
 

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L\Bronco

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I understand and I always appreciate feedback. After looking at the caps (see photo) I made the decision to give it a shot. This image shows the positive connector is fully broken off & leaking. That made the decision a lot easier. The 2nd photo shows all three replacements. I'll report back once it's installed tomorrow.
Nice work!
 
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griff

griff

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Bowing to your skills @griff .
Much appreciated Motech.

Here's my secret →
NOTE: My 92' Bronco did NOT pop out from the inside cab by the firewall. It was obtained through the wheel well.

Credit where it is due! There is little you cannot learn on YouTube. One other video convinced me that there are so many fuel pump primer issues attributed to EEV-IV that it, along with the shape of my capacitors made the project go forward.
 

Motech

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NOTE: My 92' Bronco did NOT pop out from the inside cab by the firewall.

I did not claim you could get it out from inside the cab. I know better.

One other video convinced me that there are so many fuel pump primer issues attributed to EEV-IV

But I did not know this. In all my years as a Ford tech, I've never (that my evermore feeble mind can recall) have run into this. Sticking relay leaving pump running key-off and killing batteries, but never pump running with a cranking no-start too.

Maybe it's a midwest weather thing?
 

jdabnabe

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Thats a personal preference thing. If you look at number of failures compared to how many are out there, its pretty low. If you are successful, you wont be out too much, (except time) however, de soldering and resoldering on an old board is risky at best.
Your call.
Cheers
It seems like every time I take anything apart on the old girl she’s down for at least a week and I’m out at least $300.00...
 
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griff

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I did not claim you could get it out from inside the cab. I know better.

I was referring to the guy in the video I posted. He said it comes out through the firewall in the cab.
But I did not know this. In all my years as a Ford tech, I've never (that my evermore feeble mind can recall) have run into this. Sticking relay leaving pump running key-off and killing batteries, but never pump running with a cranking no-start too.

Maybe it's a midwest weather thing?

There were a ton of videos and diagnostic sites all pointing to the EEV-IV unit. Even guys with Mustangs scratching their heads over the fuel pump priming even when the key was out of the ignition (battery disconnect being the only thing turning it off). I do know the humidity in the Midwest does things that never happen in the desert where I had my Bronco for 20 years. Mainly the appearance of rust. I never leave the car outside of the barn I keep it in, but light signs of rust (side mouldings).
 
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