Electrical quandry
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New User
Joined: Jul 2002
Posts: 8
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Electrical quandry
Trying to solve electrical problem. Here's what I have:
--86 F150 302 2wd auto
--Battery--6mos old
--Battery cables-new
--Starter--new
--distributor--new
--coil--new
--ignition module--new
Problem: Battery does not hold charge....truck will start with jump, but after running for a while will not restart....engine cranks very slowly...and battery seems dead. I get a reading of 15volts on battery when engine running.....
thanks for any help
BZ
--86 F150 302 2wd auto
--Battery--6mos old
--Battery cables-new
--Starter--new
--distributor--new
--coil--new
--ignition module--new
Problem: Battery does not hold charge....truck will start with jump, but after running for a while will not restart....engine cranks very slowly...and battery seems dead. I get a reading of 15volts on battery when engine running.....
thanks for any help
BZ
Posting Guru
Joined: May 2002
Posts: 1,306
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From: Bryan/College Station
Electrical quandry
You could possibly have a bad cell in the battery. It sounds as though the alternator is charging alright, just a tad high. I've seen batteries with dead cells act like your symptoms. No garruntee but worth checking.
BROKEBRONCO
84 Bronco 351HO/C-6/208/10.25 Rear/D44TTB Soon to have D60 Front/NP435
86 F250 351HO/C6/10.25 Soon to have a front axle and the ZF tranny
BROKEBRONCO
84 Bronco 351HO/C-6/208/10.25 Rear/D44TTB Soon to have D60 Front/NP435
86 F250 351HO/C6/10.25 Soon to have a front axle and the ZF tranny
Thread Starter
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New User
Joined: Jul 2002
Posts: 8
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Electrical quandry
You were right.....checked everything else just to make sure..then took in battery.....6 month old heavy duty battery was toast. sometimes it's the simplest thing. Battery was replaced free...I'm up and cruising again.
thanks!!
BZ
Junior User
Joined: Sep 2002
Posts: 71
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From: phoenix united states
Electrical quandry
hello,
i have had similar problems on my 1986 ranger. i replaced the alternator and everything was fine. you can usually get that checked for free and see if that's what you need.
i have had similar problems on my 1986 ranger. i replaced the alternator and everything was fine. you can usually get that checked for free and see if that's what you need.
Senior User
Joined: Jul 2002
Posts: 234
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From: Jacksonville, FL
Electrical quandry
15 volts does sound a bit excessive...supposed to be 13.8 ballpark. it is possible to ruin a battery by overcharging it. I would also check the alt. and regulator (if not internally regulated).
