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OT Mechanic question

I have a 1999 S-10 PU-LS-4.3 Auto-Loaded

I have had a intermitten problem with fuel pump .
This past spring I had a load on it and pump failed .Fooled around with it a bit and it started.
About one month later had a load on it again.Failed to start.I bounced it a bit and it started up on next try.
Went all summer with no further problems.
Was using it yesterday around the yard.Last try and pump not running .
I switched relay box fuses around and have ruled that out.
there is pressure showing on Oil guage.


I have heard there is a hot wire near the drivers side under the hood you can by pass everything to engage the pump.
Does anyone know where it is at?Describe it where to find it to me .
Is there any place failures are common or am I wasting my time and just need to go ahead and replace the pump?

Can't get under it with out jacking it up to get to top of tank but from what I can see the ground for the tank is good and the wiring looks solid.

__________________
IT SEEMS THAT EVERYTIME A BREED OR LINE OF DOGS GET POPULAR IT EVENTUALLY LEADS TO ITS RUINATION BY UNINFORMED PEOPLE BREEDING WITHOUT DOING THEIR RESEARCH FIRST.

Gone but never forgotten:
NtChGrCh Dryfork Punkin
NtChGrCh Dryfork Little Blue Baby Doll
2009 Pa Show Dog Of The Year
GrCh Dryfork Little Black Book
Gr.Ch. Make My Day Sunny
Gone too soon RIP my baby girl
Gr.Ch. Black Dog Black Cherry
GrCh Dryfork Black Dog Raine
One of kind and would make a believer out of you when you thought there were no coon left
Home of:
2009,2013,2018 Pa. State
Show Handler Of The Year
CH. Power Pack Pepper
2018 Pa. Show Dog Of Year
Gr.Ch. Batman's Poison Ivy
2011&2013 WTDA Pa State Champion
2011&2013 Overall Hunt For The Cure
Ch. Jay's Greenridge Heidi
In memory of my best friend "Jay"

truck

sounds like your fuel pump went check your wireing going into your fuel pump if it shows voltage more than likely its your fuel pump another thing to keep in mind it may not show 12 volts my wifes went out on her 03 mabliu my buddy and i couldnt figure out why we was only getting 5 votls to the fuel pump so i said we just try a new fuel pump said on the new 1 5 volts but he was a ford mech for 38 yrs so he figured it was 12 volts like a ford if its fuel injected see if you have any fuel pressure on the fuel rail if not its more likely the fuel pump jmo

Propably pump and its easier to get a couple buddies and lift the bed off the truck then dropping the tank

Check connector and terminals for burnt spots or loose pin fit. Most fuel pumps come with a new pig tail harness. That can cause your problem. Also seen faulty fuel pumps.

Yes, check your power wires that plug into the pump.....I replaced the fuel pump on my 99 S-10 4 times before I realised the lead wires had melted. Much easier to take the 4 bolts out of the bed and then remove the gas cap and unscrew the filler neck screws and unplug the tail light plug and lift bed toward the rear of the truck. (2 people)... that should have the high PSI pump putting out somewhere between 50-60 PSI.

Truck started again and while it was running I took it to my brother-in -laws so I would have help lifting the bed. I pulled the bed off today .Decided it was easier than working under the bed and dropping the tank.
There were 4 bolts on each side of the bed and I snapped one off.Oh well ,I guess 3 will still hold it on the one side.
It wouldn't start again when I went to move the truck out of the way.
All the wiring looks real good.
I am going to go ahead and get a pump .Locally they are 240 up to 380.Found some on line a little cheaper and will be sending for one today....Thanks for the replies!

__________________
IT SEEMS THAT EVERYTIME A BREED OR LINE OF DOGS GET POPULAR IT EVENTUALLY LEADS TO ITS RUINATION BY UNINFORMED PEOPLE BREEDING WITHOUT DOING THEIR RESEARCH FIRST.

Gone but never forgotten:
NtChGrCh Dryfork Punkin
NtChGrCh Dryfork Little Blue Baby Doll
2009 Pa Show Dog Of The Year
GrCh Dryfork Little Black Book
Gr.Ch. Make My Day Sunny
Gone too soon RIP my baby girl
Gr.Ch. Black Dog Black Cherry
GrCh Dryfork Black Dog Raine
One of kind and would make a believer out of you when you thought there were no coon left
Home of:
2009,2013,2018 Pa. State
Show Handler Of The Year
CH. Power Pack Pepper
2018 Pa. Show Dog Of Year
Gr.Ch. Batman's Poison Ivy
2011&2013 WTDA Pa State Champion
2011&2013 Overall Hunt For The Cure
Ch. Jay's Greenridge Heidi
In memory of my best friend "Jay"

UPDATE....
I found a pump on line for about 1/4 of local prices.
Before ordering it I tested all the lines at the pump for shorts and feed.Every thing checked out and truck still did not start so I ordered the pump.
Installed it and pump would not pump.Darn!
Pulled all the wires I spliced.Retested the curcuits at the wire ends and now it showed a bad ground.
I soldered all the wire splices the second time and heat sealed them back on the new pump connector wiring.I have never trusted those little red wiring splice connectors anyways.
I then spliced a new wire into the new wiring harness ground and grounded my pump directly to the frame .
We Got POWER!

__________________
IT SEEMS THAT EVERYTIME A BREED OR LINE OF DOGS GET POPULAR IT EVENTUALLY LEADS TO ITS RUINATION BY UNINFORMED PEOPLE BREEDING WITHOUT DOING THEIR RESEARCH FIRST.

Gone but never forgotten:
NtChGrCh Dryfork Punkin
NtChGrCh Dryfork Little Blue Baby Doll
2009 Pa Show Dog Of The Year
GrCh Dryfork Little Black Book
Gr.Ch. Make My Day Sunny
Gone too soon RIP my baby girl
Gr.Ch. Black Dog Black Cherry
GrCh Dryfork Black Dog Raine
One of kind and would make a believer out of you when you thought there were no coon left
Home of:
2009,2013,2018 Pa. State
Show Handler Of The Year
CH. Power Pack Pepper
2018 Pa. Show Dog Of Year
Gr.Ch. Batman's Poison Ivy
2011&2013 WTDA Pa State Champion
2011&2013 Overall Hunt For The Cure
Ch. Jay's Greenridge Heidi
In memory of my best friend "Jay"