Electrical Nightmare
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Joined: Feb 2007
Posts: 24
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From: Northwest FL
Electrical Nightmare
I think the earliest indication that there was a problem was when I picked up my truck from getting the brakes fixed after the caliper seized. I went to start it and it took a few extra revolutions of turning over to start and when it did it shot out a ton of black smoke. The truck ran fine it just was a rough start. Then my battery light started coming on intermittently and shutting off. Then one evening I locked my truck with the key fob and the lights that flash to indicate that it locked stayed on and would not turn off until I started the truck and shut it down again. This still happens every time I use the key fob. Just recently the starter has been drawing a lot of power to turn the motor over. I thought this was because it was cold however, even after the truck is warm, it will sometimes still draw a ton of power and barely turn over enough to get it started. Also, the truck sat for a week. I started it up and when I drove down the road and the RPM's approached 2000 the motor would cut out and then cut back on again. The check engine light came on. I parked it. Started it up again, the light was off and the truck ran fine. The truck is still very hard to start.
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I have since bought new batteries and tested the voltage during starting and it stays above 10.5V so I think everything is good there. The starter is getting 12.4V and the batteries are fine. The alternator works properly.
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Is there any way to trouble shoot this electrical issue? Or is there a common thread between all these issues? Any help would be greatly appreciated.
<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
fficeffice" /><o></o>I have since bought new batteries and tested the voltage during starting and it stays above 10.5V so I think everything is good there. The starter is getting 12.4V and the batteries are fine. The alternator works properly.
<o
></o>Is there any way to trouble shoot this electrical issue? Or is there a common thread between all these issues? Any help would be greatly appreciated.
Tuned
Joined: May 2008
Posts: 282
Likes: 0
From: Pearl River, LA
Electrical problems are an asspain. However, you're fortunate because there are common problem areas you can check out.
Check out this link first:
https://www.ford-trucks.com/forums/9...ml#post8463872
This one plagued me for almost three weeks, so check it out.
-There is a 42-pin connector that sits on top of your drivers side valve cover and sometimes that chafes, too.
-There is a wire that runs over the drivers side shock, check there.
-It may not be related to your problem, but check the wire that runs out of the shifter and over the steering column. That's known to cause problems (not like yours, from what I have read). However, it would be good to check since it's quick and easy.
It would be a good idea to reinforce harnesses/wire bundles with electrical tape. Make your truck bulletproof whenever replacing parts/troubleshooting.
Any chafes will be small and not always blatantly obvious. You can search for them by letting your truck idle while you push on any wires that are making contact with anything that can rub on them.
Check out this link first:
https://www.ford-trucks.com/forums/9...ml#post8463872
This one plagued me for almost three weeks, so check it out.
-There is a 42-pin connector that sits on top of your drivers side valve cover and sometimes that chafes, too.
-There is a wire that runs over the drivers side shock, check there.
-It may not be related to your problem, but check the wire that runs out of the shifter and over the steering column. That's known to cause problems (not like yours, from what I have read). However, it would be good to check since it's quick and easy.
It would be a good idea to reinforce harnesses/wire bundles with electrical tape. Make your truck bulletproof whenever replacing parts/troubleshooting.
Any chafes will be small and not always blatantly obvious. You can search for them by letting your truck idle while you push on any wires that are making contact with anything that can rub on them.
