'86 F150 losing battery charge over night - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford F-100 | Ford F-150 | Ford F-250 | Ford F-350 | Ford Super Duty | Ford Diesel Forum for discussion of the Ford F100, F150, F250, F350, Superduty and Diesel trucks.

 
LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 02-23-09, 05:04 PM Thread Starter
Registered User
 
Join Date: Jan 2009
Posts: 2
'86 F150 losing battery charge over night

I have been searching for the cause of power leaking from my battery each morning for about 6 months. I have little battery power each morning if I have driven the car the previous day. However if I don't use the truck over a two day period, the battery is very dead. Engine is the 305 5.0 EFI.

So far I have replaced battery, alternator, starter motor, starter solinoid relay, ignition key module, starter switch, positive battery cable, brake light switch.
I have tried to run amp tests on the circuits and find nothing I understand as an abnormal draw. Does anyone have a suggestion as to how to proceed. The truck has 286,000 miles on it and I still love driving it. I don't want to abandon it. The only way to maintain power in the battery is to diconnect the neg. terminal each night. But that gets old real quick.
If you have no suggestions for testing the circuits can anyone suggest a repair manual that outines the procedure to check out the circuits?

gegee is offline  
Sponsored Links
Advertisement
 
post #2 of 3 (permalink) Old 02-23-09, 07:14 PM
Administrator
 
Join Date: Sep 2006
Location: Arkansas
Posts: 6,804
Re: '86 F150 losing battery charge over night

I've had a bad horn relay cause this problem before. Not for sure where it's located on your vehicle.
jwko is offline  
post #3 of 3 (permalink) Old 02-26-09, 09:50 AM Thread Starter
Registered User
 
Join Date: Jan 2009
Posts: 2
Re: '86 F150 losing battery charge over night

Thanks, I'll check out all suggestions.
GG
gegee is offline  
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Trucks | Utes | Vans |SUVs | Crossovers > Ford F-100 | Ford F-150 | Ford F-250 | Ford F-350 | Ford Super Duty | Ford Diesel


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome