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View Full Version : Won't hold a charge....


Shorty
05-09-2007, 04:05 PM
My buddies got a 1994 ford explorer, and this morning he needed a jump, but when he shut it off after a bit, it won't start without another jump. And there's now this weird hum noise coming through his speakers. Any answers that might help?

Tha_Stepside
05-09-2007, 04:40 PM
wow, sounds like you have a heavy draw coming from somwhere in your electrical system, id try looking at the stereo first. start looking for voltage drops with a multimeter, its a tedeous process but if you look hard enough you will find it.

Nutbar
05-09-2007, 07:06 PM
sounds like the alternator has packed it in which apperently is not uncommon for the later fords.

blacker_69
05-09-2007, 07:27 PM
get it runnin and tap the alternator. common on those that the brushes stick once worn, my 91 did the same thing gave it a tap freed up the brushes and started charging agian, replaced it anyways. id say your batts bout as dead as it could be too. most likely replace the alt and see if the batt will take a charge again might have been drawn down too much

Shorty
05-09-2007, 07:48 PM
Thanks guys, We'll try that! I don't know a thing about stuff like that, so I'm very glad I asked!

epic3
05-09-2007, 09:36 PM
the hum means your alternator is most likely working but your battery most likely aint

Shorty
05-09-2007, 09:43 PM
Yeah I just talked to him , its a fairly new alternator. And the battery is fairly new as well.

Mobular
05-09-2007, 11:49 PM
My fullsize had a weird non-charging issue. Turned out to be a bad starter. Check it out.

BrentG
05-10-2007, 09:56 AM
if you jump start it, check the voltage across the battery when its running, should be 13.5-14.7 then its charging, if its below 12, then not charging.
get the battery load tested, if its good, then you gotta start checking for draws when its not running

ray
05-10-2007, 11:32 PM
sounds like the alternator has packed it in which apperently is not uncommon for the later fords.


capacitors sounds like there gone witch would push too much power through the system witch would send hummin through stereo and into speakers

Toyquad
05-11-2007, 08:09 AM
new alternator or rebuilt? its a ford... burn it

youngun
05-11-2007, 09:01 AM
just buy a optima

epic3
05-11-2007, 09:05 AM
capacitors sounds like there gone witch would push too much power through the system witch would send hummin through stereo and into speakers

capacitors just smooth off the ac ripple left over from the diode rectifier that converts it from ac to dc. The battery does that to and if its dead you get humming through your audio system if the alternator is putting out some sort of charge.

nonhighwayservice
05-11-2007, 08:09 PM
shitty ground! if not...... burn it!!

MikeWild
05-16-2007, 08:45 PM
just buy a optima


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