scoutman Posted January 10, 2011 Share Posted January 10, 2011 Put in a new alternator and a new battery and it will last about 30 miles and then there is no battery power left. Any ideas I could look for. I just bought this comanche and was really happy but now this problem started and I am trying to start a new job. Link to comment Share on other sites More sharing options...
comanche12 Posted January 10, 2011 Share Posted January 10, 2011 try checking the parasitic drain. http://www.flashoffroad.com/electrical/ ... Drain.html Link to comment Share on other sites More sharing options...
Pete M Posted January 10, 2011 Share Posted January 10, 2011 if it's draining while driving, then you need to check that the alternator is actually charging. got a multimeter? Link to comment Share on other sites More sharing options...
sinkrun Posted January 10, 2011 Share Posted January 10, 2011 I put a brand new auto zone alt in mine last about 10 miles and it went to carp. Link to comment Share on other sites More sharing options...
jimoshel Posted January 10, 2011 Share Posted January 10, 2011 Just because it's new doesn't mean it's good. I have taken new parts out of an unopened box and they were bad. If the battery goes dead while driving then it's not getting charged. Either the alt is bad or bad wiring, connection. Get a VM, volt meter and start at the alternator and check the circuit to the battery. The book says 14.6volts but anything from 14-15volts will charge the bat. That's while the motors running. Link to comment Share on other sites More sharing options...
TrailReadyMJ Posted January 10, 2011 Share Posted January 10, 2011 Just because it's new doesn't mean it's good. I have taken new parts out of an unopened box and they were bad. If the battery goes dead while driving then it's not getting charged. Either the alt is bad or bad wiring, connection. Get a VM, volt meter and start at the alternator and check the circuit to the battery. The book says 14.6volts but anything from 14-15volts will charge the bat. That's while the motors running. :agree: I have ran into this a lot myself, especially with autozone or advance brand parts. In fact as I type this my buddy down the road is working on his. He is on his 3rd bad autozone alternator in 2 days for his VW! In my experience, if a new or reman unit is going to go bad prematurely, it usually happens within the 1st 100 miles or so. Link to comment Share on other sites More sharing options...
STERLING STINGER Posted January 10, 2011 Share Posted January 10, 2011 me too..autozone alts suck Link to comment Share on other sites More sharing options...
88pioneer Posted January 10, 2011 Share Posted January 10, 2011 :agree: Also, put an autozone alternator in my old XJ, and ended up replacing it a week later Link to comment Share on other sites More sharing options...
scoutman Posted January 11, 2011 Author Share Posted January 11, 2011 Just got off the phone with mechanic that was looking at. What he found was a paperclip lodged down behind fuse box. He said all is good now. Thanks for all the help this is a great forum . Link to comment Share on other sites More sharing options...
STERLING STINGER Posted January 11, 2011 Share Posted January 11, 2011 lololol....a paper clip??? :rotfl2: :rotfl2: were all bashing autozone/advanced...lolol but their alts DO suck :jump: Link to comment Share on other sites More sharing options...
comanche12 Posted January 11, 2011 Share Posted January 11, 2011 every time i read this thread. I'm biting my lips since i have autozone alternator and so far its still work :dunno: :( Link to comment Share on other sites More sharing options...
jimoshel Posted January 11, 2011 Share Posted January 11, 2011 every time i read this thread. I'm biting my lips since i have autozone alternator and so far its still work :dunno: :( Nobody said they were ALL bad. When you consider the big chains sells a thousand or more of an item a couple bad ones is no big deal,,,unless you're the one that got one of the bad ones. Link to comment Share on other sites More sharing options...
comanche12 Posted January 11, 2011 Share Posted January 11, 2011 every time i read this thread. I'm biting my lips since i have autozone alternator and so far its still work :dunno: :( Nobody said they were ALL bad. When you consider the big chains sells a thousand or more of an item a couple bad ones is no big deal,,,unless you're the one that got one of the bad ones. hm hope mine is good one :peek: Link to comment Share on other sites More sharing options...
dfreeman616 Posted January 12, 2011 Share Posted January 12, 2011 every time i read this thread. I'm biting my lips since i have autozone alternator and so far its still work :dunno: :( Nobody said they were ALL bad. When you consider the big chains sells a thousand or more of an item a couple bad ones is no big deal,,,unless you're the one that got one of the bad ones. although when you go through 3 bad throttle position sensors from az before finding one that's good, you gotta wonder... Link to comment Share on other sites More sharing options...
Pete M Posted January 12, 2011 Share Posted January 12, 2011 When you consider the big chains sells a thousand or more of an item a couple bad ones is no big deal,,,unless you're the one that got one of the bad ones. like Fram oil filters. never had a problem... until one tried to starve my engine of oil. :fs1: never again. Link to comment Share on other sites More sharing options...
jimoshel Posted January 12, 2011 Share Posted January 12, 2011 Quite frankly I am having a hard time believing the paper clip story. Do this. Take a charged battery. Get a piece of wire, not copper but steel, baling wire. Now slap it across the 2 battery posts. Use a pair of pliers, not your bare hands. See what happens? Either the clip would have melted or the wiring going to the fuse box, accompanied by mucho smoke and smell. If the paper clip had a high resistance then yes, it can happen, high resistance equaling a slow battery drain. However paper clips do not have high resistance, 6 ohms on the one I measured. I don't buy it. Jim Link to comment Share on other sites More sharing options...
comanche12 Posted January 12, 2011 Share Posted January 12, 2011 Quite frankly I am having a hard time believing the paper clip story. Do this. Take a charged battery. Get a piece of wire, not copper but steel, baling wire. Now slap it across the 2 battery posts. Use a pair of pliers, not your bare hands. See what happens? Either the clip would have melted or the wiring going to the fuse box, accompanied by mucho smoke and smell. If the paper clip had a high resistance then yes, it can happen, high resistance equaling a slow battery drain. However paper clips do not have high resistance, 6 ohms on the one I measured. I don't buy it. Jim I was thinking same thing. its fun to watch how fast clip melt away sudden haha. Link to comment Share on other sites More sharing options...
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