My car went from working fine to dead flat next day. I had already suspected it was an issue with an old battery, so I bought a new one which worked fine for 5 days, then dead flat again. The car starts with recharged battery. Something must be draining the battery unnoticed, despite no lights, radio etc. apparently left on overnight.
Check alternator voltage output, might be low. obd2 scanner
SOURCE: battery keeps going dead
get yourself a multimeter, take the door cover off. Start checking everything. check to see what is hot and whats not. If its not hot, then it not the problem. If its hot then follow it back. Also I'm not real familiar with the Delta modles, but I have run into situations where some of the relays are actualy under the driver seat. If it doesn't seam to difficult you may want to pull the seat.
If your not into all the trouble shooting and diagnostic work, one other way to solve the problem without a lot of work is to go to the junk yard. Find a door that works and is obviously all there. and just replace the old door. The worst thing you may need to do is go to Mayco and get a cheap paint job. The most you need to do is just splice the wires where they are cut and your problem is fixed and you didn't take the door apart at all. and if the inside part doesn't match just replace it with the cover from the one you got rid of.
SOURCE: dead battery
if you suspect your alternator disconnect power going to it and see if your problem is over
SOURCE: battery keeps going dead. Brand new battery i
something draining the battery .check blower motor sometimes keeps running even when indicating it is off .remove battery terminal and tap against the terminal to see if there any large sparks.if they are . remove fuses one by one as u test till the spark is not there .find out what links are used on that link and disconect one by one when the fuse is on and test if the large spark is still there
SOURCE: The battery keeps going dead on 1999 Mitsubishi
There is an alternator fuse located on the positive battery clamp or in the fuse block under the hood. if it is part of the positive battery clamp it is a dealer only part and will run $10 to 20 dollars. If it is in the fuse block you should be able to get one at the auto store and modify it to slide in easily. Get a flash light and check all of your fuses carefully. The blown fuse may be hard to spot. The design of the car lets the battery go dead with out even turning on the charge light on the dash to let you know you are not charging the battery.
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