Question about 2009 Mitsubishi Lancer 2.0
We have changed the battery and sometimes it is just dead when I go to start it in the morning, not everyday, but just periodically. we have had the alternator, battery and starter all checked and they say everything is testing ok...any ideas?
If the battery is going flat, then something is draining it. Either that, or the heavy cables that connect to it are making poor contact. Look for green corrosion or white acid powder. Ensure that the ground (-ive) cable is properly connected to the chassis ie remove and replace the chassis bolt. Check also that the trunk light is not on when the trunk is closed. Crawl in or fold down the back seat to check this.
Posted on Dec 03, 2014
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Posted on Jan 02, 2017
Did they test the output only, 13.5 to 14v if it was all that was tested there are two other possibilitys that the alternator needs testing for Voltage regulation which will fry a battery (over charge and cells collapse)or the diodes have failed which will flatten a battery overnight.
Posted on Oct 22, 2008
SOURCE: Battery keeps going dead
Hello raiderfan520....Have the battery "load tested" this will tell ya if the battery is defective, one bad cell will draw the others down. If it's bad and only 12 months old you should have warranty left. (free replacement or pro-rated)...If your battery load tests OK, then you have an amperage drain going on while the vehicle is parked.
This is called a "parasitic drain"
Make sure no interior lights, under hood, trunk lights...etc. are remaining on. I hope you don't need the following information i'm about to give you, but here are the steps to locating a parasitic drain.....
PS...what kind of season are the raiders going to have this year? I'm in LA county and "Manny being Manny" has turned me away from baseball for now.
Posted on May 14, 2009
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.
Posted on Dec 16, 2010
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