why does my battery drain in my 1986 ford f150 in a matter of minutes?
Every time I leave my truck sitting for more that 20 minutes. My battery dies and I have to get jump started. I have had my alternator checked and it is good. If I disconect the battery my truck idles a little softer, and if I turn on my head lights my
sounds like the alternator is bad. if it is drawing enough current to drain it in 20 mins, it has to be a heavy load. do this, let the truck cool down with the batt. disconnected, then connect the cables and check the temp. of the alt. in 5 mins. if it