Battery Drain?
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Battery Drain?
I recently aquired a 1989 inline 6 cylinder F150. The previous owner (my brother) always left the battery cable unhooked to prevent the dreaded dead battery, which typically occured after 2-3 days. Ok, when I reconnect the cable I hear a clicking noise moreso toward the firewall on the drivers side, and then it sounds like the fuel pump pressurizes the system. I have not checked for parasitic drain yet, the battery is new, always remains charged while unhooked? Probably drain with that being said, right?
Last edited by shooked; Feb 5, 2006 at 03:54 PM. Reason: mispelled
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Guys where is the best place to get a manual. I still think it has something to do with the fuel pump because it sounds like it pressurizes the system. But I do realize that the fuel pumps are in the dual tanks. So, based on that what else could be clicking and pressurizing under the hood, near the drivers side fenderwell and firewall. In the owners manual under fuse links and circuit breakers teh section that says electronic engine controls and fuel pump, is a 20 ga fuese link and it is located at the starter motor relay. Do you think this thing is bad, no correlation whatsoever or it would not work if it was bad? Also, parasitic drain is confirmed as I tested it thru the negative battery cable.
Thanks
Thanks
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Joined: Dec 2005
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From: upstate NNY WATERTOWN
battery drain
i have a 1992 f150 which started to drain battery overnight.drain was from memory in radio which draws 24/7 and shorted.just try leaving battery hooked up and pull both fuses under dash for radio and test battery with volt meter before removal and recheck 4-5 hours later and see if the battery holds level.
i have to replace radio and no more drain to battery
i have to replace radio and no more drain to battery
Last edited by stevcher; Feb 12, 2006 at 08:49 AM. Reason: spelling
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Joined: Sep 2002
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From: Langhorne, PA
I would bet a buck or two you have a bad alternator. The 92 stock alternators from Ford, and all aftermarket replacements are unable to perform well. You might have a short somewhere else, but the short could be in the alternator internal charging circuits also.
These alternators also give the "perception" that there is a drain, when the alternator goes bad, it leaves the battery partially drained, because the alt was intermittantly functioning, and the electrical system was running straight from the battery. So, when you make it home, and park the truck, the next time you get in and try to start the engine from a battery that is charged at 50 percent capacity, the starter can't crank, and the battery gets finished off.
Research alternators here, or in the electrical forums. also see Fordfuelinjection.com, and read about third generation alternators.
These alternators also give the "perception" that there is a drain, when the alternator goes bad, it leaves the battery partially drained, because the alt was intermittantly functioning, and the electrical system was running straight from the battery. So, when you make it home, and park the truck, the next time you get in and try to start the engine from a battery that is charged at 50 percent capacity, the starter can't crank, and the battery gets finished off.
Research alternators here, or in the electrical forums. also see Fordfuelinjection.com, and read about third generation alternators.
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After pulling several fuses to see what actually was causing the drain I was shocked when I pulled the 30 amp fuse and noticed it was and is my heater and ac fuse. Being the dead of winter here in WV I do not need heat anyway, never cold enough. Just kidding. Any ideas on why this is occuring would be greatly appreciated. No more parasitic drain, no more heat, no more a/c.
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