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Help Req: Electrical just quits when shut off

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Old Oct 26, 2018 | 06:28 AM
  #1  
franklin_m's Avatar
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Help Req: Electrical just quits when shut off

Hello.

I'm new to the forums because I'm trying to figure out a really weird problem. Drove to grocery store yesterday, shut off the Excursion (2001, V10) and entire electrical system went dead. No interior lights. No door locks, no ignition, even clock in radio went dead. This is the second time this happened under similar circumstances.

After a couple minutes, it magically returned. Car started normally a few minutes later and drives fine otherwise.

Thoughts?
 
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Old Oct 26, 2018 | 06:40 AM
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First thing I'd look at is the battery cables. Check for corrosion at connection points.
 
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Old Oct 26, 2018 | 08:11 AM
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96firephoenix
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Originally Posted by loganj01
First thing I'd look at is the battery cables. Check for corrosion at connection points.
agreed. Also check the fusible links for corrosion

Next would be to load test your battery.
 
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Old Oct 26, 2018 | 08:27 AM
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All, some additional info:

- This morning, it started, then appeared to lose all electrical (lights flicker, engine starts to die) then immediately return and ran fine.
- Battery load tested last month, alternator tested as well. Both checked fine
- Battery terminals appear fine, not corroded, securely connected.

I've got a Chilton's manual, but electrical info in it is weak. Yeah, there's circuit diagrams, but not as good at telling someone where the physical parts are located. So, if you folks with more knowledge don't mind a little additional help:
- Also, where are grounding straps? I've heard those may be source of problem.
- Fusible links? How many are there? Where?

Only other thing I can think of is that it's been slow to start for a few weeks. I work 28 days on (overseas) and 28 off, and I attributed it to that. But now I'm wondering if there might be a relation.

Thanks everyone. As you can imagine, spending my 28 days home troubleshooting car issues isn't my first choice for how to spend my time.
 
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Old Oct 26, 2018 | 09:05 AM
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I underlined the grounds for you and noted the fuse link.



 
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Old Oct 26, 2018 | 09:44 AM
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That’s awesome ... do you have one for gas engine? Mine’s the gasoline V10. They’re probably similar locations, but might miss one. Thanks so much.
 
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Old Oct 26, 2018 | 09:53 AM
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I deleted the 7.3 pic and posted the generic 6.8
 
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Old Oct 26, 2018 | 10:52 AM
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Originally Posted by pirate4x4_camo
I deleted the 7.3 pic and posted the generic 6.8
Wow! Can't thank you enough. BTW, what book is that? Would love to find a copy.
 
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Old Oct 26, 2018 | 11:03 AM
  #9  
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It is the factory wiring diagram manual which is part of the factory service manual set which includes

The most important of which is:
2 volume workshop
Powertrain and Emissions
wiring

best place to pick them up at a reasonable cost is to watch eBay.



 
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Old Oct 26, 2018 | 11:14 AM
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Fwiw G100 is the PCM ground and the one that’s most often causes quirky intermintient function issues.

I would remove the bolt, clean all surfaces and reienstall. One installed spray with a battery terminal protectant to guard against corrosion.



 
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Old Oct 26, 2018 | 01:40 PM
  #11  
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The entire fsm can be had on eBay in cd form for around $14.
 
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Old Oct 26, 2018 | 01:49 PM
  #12  
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Originally Posted by yzf450motoxrider
The entire fsm can be had on eBay in cd form for around $14.
Or online for free. I like the printed version even at a few hundred dollars, just easier to use.
i haven’t used the online version in years but will see if I still have the link.
 
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Old Oct 26, 2018 | 05:19 PM
  #13  
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Originally Posted by pirate4x4_camo


Or online for free. I like the printed version even at a few hundred dollars, just easier to use.
i haven’t used the online version in years but will see if I still have the link.
i have to agree the cd is a pain to navigate. I have the hard copy for my Jeep much better.
 
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Old Oct 26, 2018 | 05:32 PM
  #14  
01__Excursion's Avatar
01__Excursion
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Originally Posted by pirate4x4_camo


Or online for free. I like the printed version even at a few hundred dollars, just easier to use.
i haven’t used the online version in years but will see if I still have the link.
Was there an official re-print, or revision from Ford regarding these manuals, I have the 2001 Workshop manuals too, but I have 1A, 1B, and 2A, & 2B, looks like the 2 volumes might have been reduced to 2 smaller books?
 
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Old Oct 26, 2018 | 06:50 PM
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Ya I’ve seen that before also, I think the 2 book set is just more pagesper book.
either way it is a infespensible resourceful you are going to to DIY or own one of these for the long haul.
 
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