I have a v6 3.1 and every once in a while, I have to change the battery posts because the corrosion doesn't let the electricity flow. A big crust of corrosion forms on both post's. I'm wondering what could be causing this problem? I had the batt and alternator checked at the autoparts store and they said it was good but im starting to think its the alternator. Any clue?

 

clean posts and connections well , remove all corrosion . I like to use a small wire brush (like a USMC tooth brush) available at most dollar stores . then a light coat of di-electric grease to all surfaces . apply with a small brush , tubes of this grease available at any auto parts store . store brushes and remainder tube of grease in a zip-lock bag for future use . also good for use on bulb & sockets . should take care of your problem . good luck .

 

when your done cleaning real good check for very small cracks around the posts . Is it a maint free battery or do you have caps?

 

thanks TOM. and the battery does have caps. is that a battery I should avoid?

 

if you have a battery with caps you should ck. water level every couple of weeks . water level should cover the top of the plates . to top off a cell use distilled water . to not keep water level covering top of plates is not good for battery . batteries that are ignored tend to LAST FAST . good luck .