Something is draining the battery; alternator checks ok; new batt
(2002 Dodge Grand Caravan)
If I miss driving the van one day, the battery is dead the next day. If I'm going to be gone for a while, I disconnect the battery and when I return hook it back up and it works. We just put in a new computer ($700) and it is still doing this. Any suggestions?
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Re: Something is draining the battery; alternator checks...
If you can get the car started while it is running take the positive side of the battery cable off if it dies then it is the alternator if it does not die check the drive belt to see if it is loose or slipping
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I would check all connections. Make the belt that spins the alternator is tight. If you can get the vehicle to an advance auto parts or any tech that can test the battery and charging system that would help. They can all so a see if anything is drawing from the battery this will let you know If there is a problem with something draining the battery
first of all, check voltage from alternator. at battery when running, should be at least 13.6-14.2 volts. with every thing off. if lower than 13.6 volts at battery. then alt, is bad. if alt, is ok ! then its the battery. or the battery connections are all corroded at battery post. good-day! make sure the grounds are ok to battery.
the wire harness has a flaw or in a switch--u need a pro for inspection--chec for loose grounds--also disconnect alternator from batt to see any difference--good alternators can have an internal issue that drains battery
sounds like you need to have the alternator checked, if it were the instrument cluster the van would still run, you may still have a problem with the cluster, but the running 2 miles and the battery going dead is the charging system, you may have two problems. fix the charging system first then worry about the dash.
Why do you feel it isn't charging. Are you going off of a voltage ereadiing? I ask because if it is reading 12 v at the battery , Do not run it very long. The lower the voltage the higher the amps. An Alternator will ocweheat and self destruct if it is working at its high limit for 15 minutes or so. A heavy charge iis normal for 30 seconds or so to make up for the starting drain. But, should show a gradual rise within seconds. An alternator is for battery charge maintenance only and should never be used to charge a dead battery. A dead battery can an will over tax the alternator for too long. A defective battery will do the same thing and it is usually why you have to change the alternator in the first place. So, If your battery is dead or extremely lpw, it should be charged with a charger Do not put a new or rebuilt Aly. sgainst a possible bad battery. It costs nothing to have your batt load tested by a auto parts store. Good Luck=Ned-.