Question about 1992 Ford F250
I have an electrical short somewhere because the battery drains over a few days. When I put a test light in line with the negative, the light stays on with a faint pulse. When I pull fuse #13 (Stop/hazard; Anti-lock brake; memory/power; Speed control; Stop sense for :Electronic Engine control; Anti lock brakes) the test light will go out after a few seconds. I don't know what the stop sense is or what "speed control" is? I have the anti locks disconnected and steering column torn apart. What is "memory/power"? Seems like a capacitor of some kind hold a charge. Once I turn key back on then off, my test light stays on and pulses until I pull out fuse again. When I hook up battery it arcs. New alt and key switch. Can U Help????
Disconnect the pos while running- if it still runs the alternator is working to run it. If not get the alt diodes tested, it is possible it is causing a drain while sitting. If it is working, check to see if it is overcharging because that can cause the battery to break down- "sulphate"' the plates and cause an internal short that will drive you crazy trying to find the short in an automobile component. If you just make short trips you could just be not charging it enough do deep cycle it. Have the batt tested- its usually free after all. In my part of the country I've never seen a modern 8yr batt last longer than 3 1/2 years, so don't assume it's good.
Another problem is you might have an internal short
Posted on May 14, 2009
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Posted on Jan 02, 2017
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Jul 09, 2012 | 2000 Ford Mustang
Jun 03, 2017 | Cars & Trucks
The best test for this is.... Well
before starting this test make sure your doors are closed and
everything is off. Then ...Take (disconnect) one end of the battery
cable, the Positive or negative it don't mater witch one. Put a 12
volt test light between the two disconnected (cable and battery
end)...now if the light is lit, then you have a voltage drain
somewhere...to find out were it is you will have too start to remove
your fuses one at a time until your test light goes off...for
example: if you pulled your cigaret lighter fuse and the light went
off then you know there is a problem with that circuit...ect......
This sounds a little confusing but it is fairly easy..i sure hope this helps you out..Good Luck
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