Question about 2004 Ford F150

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2004 F150 5.4 no power except dome and head lights. I was out with the wife doing the M-15 garage sale event, stopped for 5 min, came back to my truck and I couldn't start it. No noises when the key is on, no dash, no radio, no windows or power locks, only the dome light, head lights, and the odometer will show when I open the door. My alternator had a crack in it, so I replaced that. My buddy said his went bad on him and caused the same issue. Battery checked out fine, tested the new alternator, that tested fine. Had a lock smith come out and he said it wasn't the anti theft like some of the other forums have suggested. Any help trying to figure out where my issue is? I've pulled all the fuses and swapped the relays around, but still no luck. Noob question but, where is the power supply to the fuse box on this truck. Nothing is standing out to me. Could this grounding wire be the issue? Thank you everyone in advance.

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  • Ford Master
  • 1,189 Answers

Could be that rusty ground . Know what voltage drop testing is ?
Know how to use a DVOM - digital volt ohmmeter ? Testing an not guessing is the way to fix electrical problems . An if you don't know how , take it to a qualified repair shop. That's why we get the big bucks .

https://www.youtube.com/watch?v=YaYtCVBodpw

https://www.youtube.com/watch?v=sEThPhO6MxY

Posted on May 16, 2019

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  • Ford Master
  • 711 Answers

The service and repair manual will help you step by step with diagram to locate and fix the problem easily on your own and you will get the manual from the given link https://toolsnyou.com

Posted on May 16, 2019

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6 Suggested Answers

6ya6ya
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SOURCE:

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Posted on Jan 02, 2017

  • 393 Answers

SOURCE: changed battery real cranky no start

check the fuses and circuit breakers near battery i'll bet one of them popped.

Posted on Nov 16, 2008

  • 18060 Answers

SOURCE: Stock anti theft alarm stop working at the same time the locking door central stop working?

Check the body control module. All the items that you list can be controlled by that.

Posted on May 07, 2014

Testimonial: "Brad... where is it located the body control module? please advise."

  • 3289 Answers

SOURCE: Was tightening up positive battery cable on 2004

Check the large fuse shown below on the under hood fuse box. Replace as needed.


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Posted on May 12, 2014

  • 12962 Answers

SOURCE: 2008 jeep wrangler, no power to ignition or accessories, after replacing starter.

Take it to a shop. U fu--ed up royally doing the swap. If you had done the job correctly you would not be having this problem. Decent thing to do at this juncture is help your buddy pay for the correct repairs.

Posted on Apr 15, 2017

Testimonial: "That thought has been going through my mind since it all began. Problem is, I can't for the life of me figure out what I might have done wrong. Battery was disconnected before even getting under it to remove the starter, all connections were kept restrained to avoid anything making contact while doing the job. Everything was put back together tight and clean before reconnecting the battery. I didn't do anything different from any of the other jeeps I've replaced starters on in the past, yet I've never had any problems before. Please note, I'm not disagreeing with your assessment, just trying to get some insight on what I may have done wrong...."

vulkus101146
  • 19 Answers

SOURCE: 2008 Solstice stored, neg. cable off, came back reconnected, car tried to start then everything went dead, nothing, no lights dash,radio even brake lights

Time to get out the OBD scanner and see what codes have been thrown. Otherwise it is just guess work.

Posted on Mar 22, 2018

Testimonial: "Yno power at the OBD connection car completely dead"

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If you need further help, reach me via phone at https://www.6ya.com/expert/mark_445a24324be9eb03

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