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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Really Weird problem!!!!!

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Old Oct 30, 2003 | 06:41 PM
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Okie-Dokie's Avatar
Okie-Dokie
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Really Weird problem!!!!!

1984 F-150. While sitting still the battery charges just fine. However, while driving the battery discharges. I've replaced everything, battery, cables, solinoid, alternator, and everything else that any one had an oppinion of except the guy who suggested I change if from a Ford to a Chevy. Some one please help while I still have part of my sanity! Thanks!
 
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Old Oct 30, 2003 | 09:44 PM
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locknkey
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From: Right Next to U
Votage Regulator comes to mind...
 
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Old Oct 31, 2003 | 06:50 AM
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83 F350
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Does the battery go dead or does the gauge just read that way?
 
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Old Oct 31, 2003 | 06:42 PM
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From: Bryan Texas
Did you check your ground"s and do your headlights go dim ?
 
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Old Oct 31, 2003 | 06:54 PM
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Thanks Guys! Yes the lights go dim and the battery goes dead as a door nail, very quickly with the lights on. All suggestions greatfully accepted!
 
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Old Oct 31, 2003 | 09:19 PM
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From: St. George (SW Ont.)
I had a similar problem with a cousin (Marquis) turned out to be the harness where it plugs into the alt.... Hey you never know!
 
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Old Nov 1, 2003 | 01:10 AM
  #7  
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83 F350
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From: Alaska
This is weird stuff! Okay it does fine just sitting huh? What is your voltage when you are sitting and what is it when you drive? Check it with your engine running then check it after you turn all your accessories on. Does it drop voltage when you rev the engine or does this just happen when you actually move the rig? Does it go dead when it sits without running (is there a draw on it)? Just fishing for more info here, will definitely be interesting to hear what you find.
 
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Old Nov 1, 2003 | 03:45 AM
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From: Easthampton, Ma.
There is a wiring connection between the voltage regulator and the alternator hidden under the black tape wrap that corrodes and doesn't allow the battery to charge.
I've repaired a couple of these.
Try unwrapping the tape and finding this connection for inspection.
Good luck!
 
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Old Nov 1, 2003 | 09:11 AM
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Just can't believe all the great advice I find here! We will try all the things suggested, and get back with you for the results. Thanks again!
 
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