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

Possible Charge Issue?

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Old Mar 13, 2011 | 04:50 PM
  #1  
WH90's Avatar
WH90
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From: South Mississippi
Possible Charge Issue?

i got an 80 F100 that still has its original alternator, but i was looking at the charge gauge and its moving to C when a full load is on heat, lights, it moves halfway to C, so i got my tester out with no load it reads 14 load at 12 at battery should i be concerned?, also the engine tried to run with the key off whats happening to my antique baby? Thanks
 
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Old Mar 13, 2011 | 05:19 PM
  #2  
Old Hickory's Avatar
Old Hickory
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From: Sanford, NC
If it shows 14 volts at charge that is OK. If it keeps on running when the key is turned
off I would look at the idle speed and the timing. If the timing is to far advanced it can
cause run on.
 
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Old Mar 13, 2011 | 08:14 PM
  #3  
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chrissmallwood
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Your run-on issue could also be from a sticking ignition switch. My switch started sticking and it tried to do that to me once.
 
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