1989 E-150 5.0 EFI "GROUND" PATH
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Joined: Sep 2020
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Hey Chuck,
Have you tried confirming if ground is bad through continuity?
I would use a power probe (since I have one and found a cheap used one on Craigslist) as it hooks right up to the battery but this test could also be done with a multimeter.
It's called a "continuity test".
For example, Run a long wire from your battery negative to the rear of your van, using alligator clips.
Then at your fuel pump, connect the negative multimeter lead to the negative wire you just ran.
Then Touch the positive test lead of the multimeter to the ground connection of your fuel pump wire.
Have you tried confirming if ground is bad through continuity?
I would use a power probe (since I have one and found a cheap used one on Craigslist) as it hooks right up to the battery but this test could also be done with a multimeter.
It's called a "continuity test".
For example, Run a long wire from your battery negative to the rear of your van, using alligator clips.
Then at your fuel pump, connect the negative multimeter lead to the negative wire you just ran.
Then Touch the positive test lead of the multimeter to the ground connection of your fuel pump wire.
Laughing Gas
Joined: Oct 2001
Posts: 996
Likes: 5
From: Albany, Good Ol' USA
Something I learned from my old CJ 5, manufacturers assemble vehicles increasingly cheaper as time goes on. On all of my rolling stock I run a grounding strap from the negative terminal on the battery to a bus bar, then run my underhood (and some interior) grounds to it. This way I'm certain of my grounds and rarely have failures thereafter. I hear ya though, I'm approaching 60 and I'm a lot stiffer than I once was.
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Senior User
Joined: Jul 2010
Posts: 140
Likes: 1
From: St. Petersburg, Florida
Hey Chuck,
Have you tried confirming if ground is bad through continuity?
I would use a power probe (since I have one and found a cheap used one on Craigslist) as it hooks right up to the battery but this test could also be done with a multimeter.
It's called a "continuity test".
https://www.youtube.com/watch?v=x3nqlXM6nOM
For example, Run a long wire from your battery negative to the rear of your van, using alligator clips.
Then at your fuel pump, connect the negative multimeter lead to the negative wire you just ran.
Then Touch the positive test lead of the multimeter to the ground connection of your fuel pump wire.
Have you tried confirming if ground is bad through continuity?
I would use a power probe (since I have one and found a cheap used one on Craigslist) as it hooks right up to the battery but this test could also be done with a multimeter.
It's called a "continuity test".
https://www.youtube.com/watch?v=x3nqlXM6nOM
For example, Run a long wire from your battery negative to the rear of your van, using alligator clips.
Then at your fuel pump, connect the negative multimeter lead to the negative wire you just ran.
Then Touch the positive test lead of the multimeter to the ground connection of your fuel pump wire.
Thanks for the suggestion.....I'm proficient with a Multimeter so that's what I use and have thoroughly checked all relative circuits. I'm now in process of cleaning up ground connections and in some cases running parallel ground wires. I have already seen improvements in some of my readings. The goal being to provide all three pumps with full battery voltage and current flowing capabilities so that they can perform to the best of their abilities.
Chuck.
Laughing Gas
Joined: Oct 2001
Posts: 996
Likes: 5
From: Albany, Good Ol' USA
Those old Jeeps, mine's a '78 it seems the manufacturers used the least expensive means for their electrics. I've used this guide over the years and I've never gone wrong yet;
Ground post from a guy known as Jeephammer a guy that was in the wiring industry
Ground post from a guy known as Jeephammer a guy that was in the wiring industry
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Senior User
Joined: Jul 2010
Posts: 140
Likes: 1
From: St. Petersburg, Florida
Those old Jeeps, mine's a '78 it seems the manufacturers used the least expensive means for their electrics. I've used this guide over the years and I've never gone wrong yet;
Ground post from a guy known as Jeephammer a guy that was in the wiring industry
Ground post from a guy known as Jeephammer a guy that was in the wiring industry
Thanks for the article....indeed it contains a lot of great information. Reading ir was easy for me because I was trained as an Electronic Technician in the USMC and worded in that profession for many years as a civilian after discharge. Therefore I could quickly scan over many topics as they came as part of my schooling. Still good to keep on hand as a refresher when starting a project.
So, many thanks for posting the link and hopefully others will find it useful with their wiring problems.
As for Jeeps, I remember a friend of mine had an original war surplus one back in 1958 in Barstow Calif and we used to go boondocking with it out in the desert there.....aw, them was the days.
Regards
Chuck
Laughing Gas
Joined: Oct 2001
Posts: 996
Likes: 5
From: Albany, Good Ol' USA
Well dip me in buttermilk, brother Marine. Yermo or Nebo? I was with the 1st Air Wing combat engineers, WES 47 Det. B we built the Solar Pond at MCLB Barstow back in '81 if I remember correctly. Although the latter part of my tour was up at NAS Whidby Is. WA
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Senior User
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From: St. Petersburg, Florida
I was a "Hollywood" Marine. MCRD San Diego and never left California from '55-'59. I was at Barstow last year or so. Integrated Fire Control System Technician.....75mm Anti-Aircraft Cannon on wheels. They called it the SkySweeper.
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