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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Power Problems with 91 f150

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Old Sep 19, 2004 | 04:17 PM
  #1  
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alstar03
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Power Problems with 91 f150

I have a 91 f-150 with a 300 straight 6, and i have a power problem. First, if i dont atleast start the truck every 5 days or so there isnt enough power to start the truck. Second, when i drive it, the battery gauge goes towards the right side and stays just past the "L" normal and sometimes a little further. I have a new battery, altenator,voltage regulator, cylinoid, and new cables for the battery. I was wondering what is causeing the problem. Any help would be appreciated.
 
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Old Sep 19, 2004 | 07:39 PM
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351M's Avatar
351M
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From: Prince George, B.C.
Start pulling fuses for things like the radio, ecm, etc. anything that has constant power to it while the truck is sitting, somthing is drawing alot of current and even more when it is running. Also check the voltage at the battery with a meter while the guage is reading low, see if its just ths guage or if there actually is a problem.
 
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