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Old 11-19-2013, 12:36 PM   #1
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So sad :(

so my battery died the other day (left my lights on, I was out of it) and after my friend jumped it, it had idling at about 2000 for a couple days. Finally that went back to normal, then today I'm driving to work and my engine just shuts off! So there I was stuck in the middle of the road. Got it running again got it like 50 feet then it shut off again. So sad I just got my baby a few months ago and she's breaking my heart anyone else had this problem? My boyfriend is coming over later so we can try to diagnose it. I just hope it's not a ridiculously expensive fix.

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Old 11-19-2013, 12:45 PM   #2
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Get the battery tested at o'reillys or autozone, should be free. Clean/change terminals for the battery. Probably your problem, I got stranded at 3am due to battery, wouldn't even jump anymore.

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Old 11-19-2013, 01:45 PM   #3
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Could be your alternator too
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Old 11-19-2013, 04:14 PM   #4
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I've seen problematic batteries make your gauges dance, and when my last battery was on its way out it wouldn't keep the Jeep running either. Start with clean connections and a possible new battery and go from there.
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Old 11-19-2013, 04:51 PM   #5
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Probably your battery. Considering the high idle for days you could have fried your alternator also. Go to an auto parts store and have them check your battery and alternator. When ever you think one is bad you want to check both. Many people have replaced a battery just to kill the new one because the alternator is bad or visa versa.
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Old 11-20-2013, 06:04 AM   #6
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Turns out it needs a new crank sensor. Getting that today but also going to get the battery and alternator checked too. Thanks for the help everyone!
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Old 11-20-2013, 06:35 AM   #7
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Be sure to check (and clean if needed) the battery terminals. I have had a cruddy ground terminal cause all kinds of weirdness.
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Old 11-20-2013, 11:17 AM   #8
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A dead or nearly dead battery will cause that exact problem & I would suspect that before I would the crankshaft position sensor.

A TJ's engine absolutely will not run with a dead battery and it will barely run with a nearly dead battery. That is because the alternator runs off 12v from the battery in most modern vehicles and if there's insufficient battery power, the alternator won't put out any, or enough, power for the ignition system.

The days of being able to drive after jump starting a completely dead battery are over. The engine may run 30-60 seconds after being jump started if the battery is dead but the engine will die once the magnetic field inside the alternator collapses.

My wife's Grand Cherokee battery went bad and I had to jump start it 8-10 times during the 3-4 mile drive to the battery shop to buy a new battery.

Last comment... when getting your battery load tested, the tech has to know what he is doing to get accurate results. A properly done load test puts a heavy load on the battery for a period of time so its true health can be determined. I knew my Toyota's battery was bad but the first tech at my local battery shop said the battery was good after his short load test. I asked the more experienced tech I knew there to rerun the test & he confirmed it was bad while showing the first tech how to properly conduct a load test. In other words, a battery isn't necessarily good just because some yahoo says it is.
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Old 11-20-2013, 11:29 AM   #9
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X2 on Jerry's advice...not that he needs credibility.
Your CPS could be bad but when my battery went bad I experienced all the symptoms you described: high idle, jumpy gauges, inability to jomp start and stay running.
My battery died with no warning what so ever...sometimes thats the way it goes. Like many have said go to a major autoparts retailer and get a battery with a warranty...they will even install it for you.
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Old 11-20-2013, 01:10 PM   #10
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If it helps, dont get tricked into buying an optima. Had one once and it was crap. big waste of 180 bucks. oh well, i strongly urge you to get an interstate battery. have a used one in my 97 TJ and so far no issues. happy trails...
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Old 11-20-2013, 02:02 PM   #11
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http://contentinfo.autozone.com/znet...T-100/image/4/

I've got one of these for testing my battery. Wasn't alot of money and comes in handy sometimes when wanting to know condition of a battery.
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Old 11-20-2013, 04:33 PM   #12
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NEVER use your alternator to charge a completely dead battery, it WILL kill a perfectly good alternator.Alternators purpose is to maintain a charge not to charge dead batterys. These days with all the electronics in our vehicles it is a bad idea to run them on low voltage.Computers want to see a certain voltage to operate properly. It is also advisable to avoid if possable jump starting a computer controlled vehicle, voltage spikes are bad for computers.
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Old 11-20-2013, 05:15 PM   #13
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If your problems started after you killed your battery, I would change the battery. Start with the obvious, instead of throwing money all around it. If I kill my battery and then I start having problems with starting my vehicle, or my engine starts acting funny, I immediately change my battery. After you kill your battery, it may not work or charge properly anymore. A new battery will only cost you $50.00 and it is easy to change. Nothing bad with having a new battery. Just don't kill your battery anymore. You kill a battery a few times, and you will have to change it. What happens is that you ruin your battery cells.
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Old 11-20-2013, 06:46 PM   #14
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I did see a guy fry a computer with a voltage spike once

On older cars some guys would test their alternator by disconnecting the battery while the engine was running. The logic was it would only stay running if you had a good alternator putting out adequate juice. So the guy disconnects a battery cable and car still runs fine. Satisfied that his alt ain't dead he reconnects his battery cable and as he touches the cable to the battery terminal the engine just dies. To fix it he had to replace the engine computer as he had created a voltage spike that fried it.

Bottom line don't run engine/alternator without a battery connected
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Old 11-20-2013, 06:56 PM   #15
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I had a strong feeling the problem was the battery but my boyfriend being a mechanic had to prove me wrong, brought the scanner home from work and found the problem with the crank sensor but now after testing my battery I was right from the beginning haha. Going to get a new battery tomorrow so I can finally have my baby back. Thanks guys for all the help!
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Old 11-20-2013, 07:13 PM   #16
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I had a strong feeling the problem was the battery but my boyfriend being a mechanic had to prove me wrong, brought the scanner home from work and found the problem with the crank sensor but now after testing my battery I was right from the beginning haha. Going to get a new battery tomorrow so I can finally have my baby back. Thanks guys for all the help!
Some guys do that, but they mean well. Some guys hate maps, or following assembly instructions too. But, isn't it sort of fun for you, when you do prove them wrong?
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Old 11-20-2013, 08:07 PM   #17
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If your problems started after you killed your battery, I would change the battery. Start with the obvious, instead of throwing money all around it. If I kill my battery and then I start having problems with starting my vehicle, or my engine starts acting funny, I immediately change my battery. After you kill your battery, it may not work or charge properly anymore. A new battery will only cost you $50.00 and it is easy to change. Nothing bad with having a new battery. Just don't kill your battery anymore. You kill a battery a few times, and you will have to change it. What happens is that you ruin your battery cells.
not sure where you get a battery for $50. They are $100+ all day. A good one is $150.
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Old 11-20-2013, 08:13 PM   #18
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not sure where you get a battery for $50. They are $100+ all day. A good one is $150.
And a REALLY good one is $220 :-)
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Old 11-20-2013, 08:25 PM   #19
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I had a strong feeling the problem was the battery but my boyfriend being a mechanic had to prove me wrong, brought the scanner home from work and found the problem with the crank sensor but now after testing my battery I was right from the beginning haha. Going to get a new battery tomorrow so I can finally have my baby back. Thanks guys for all the help!
I'm not sure what your budget is but if it can stretch close to $200, I'd go for a Sears Diehard Platinum D34/78-DT, also known as the P-4. It has a 10 year pro-rated warranty and a no-questions asked 48 month free replacement warranty. It is not a conventional "wet" battery which doesn't hold up well to the shocks & jolts of offroading, it is an AGM (Absorbed Glass Matting) which is a solid-construction battery that isn't hurt by those jolts & bumps. It's a superb battery & for the $$$, really can't be beat.

I would NOT (!) go with any Optima battery, their quality and reliability has taken a giant nosedive in my personal opinion since they were purchased by Johnson Controls who moved their manufacturing down to Mexico.
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Old 11-20-2013, 08:36 PM   #20
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I'm not sure what your budget is but if it can stretch close to $200, I'd go for a Sears Diehard Platinum D34/78-DT, also known as the P-4. IT has a 10 year pro-rated warranty and a no-questions asked 48 month free replacement battery. It is not a conventional "wet" battery which doesn't hold up well to the shocks & jolts of offroading, it is an AGM (Absorbed Glass Matting) which is a solid-construction battery that isn't hurt by those jolts & bumps. It's a superb battery & for the $$$, really can't be beat. I would NOT (!) go with any Optima battery, their quality and reliability has taken a giant nosedive in my personal opinion since they were purchased by Johnson Controls who moved their manufacturing down to Mexico.
^^x2 on both points.
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Old 11-20-2013, 11:12 PM   #21
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not sure where you get a battery for $50. They are $100+ all day. A good one is $150.
Those Sears Die Hards are $150 dollars. Although, I use to get them, I recently found out that they don't die hard, they die fast. My last one lasted about three years and then it was a pro-rated exchange. Things just aren't made of the same quality today as they use to be. After two years, you don't get a new one, it is pro-rated to five years.

I got my Interstate battery for 39.95, with core exchange. I've had it about five years. With the price as it was, those guys were really moving those batteries so, I got a real fresh one.

Wow! Although I did look up the prices of them now. They are about 150.00. I wonder what the automotive shop, where I brought mine, is charging now. Still, I would choose an Interstate battery over a Sears Die Hard. They just don't make the Die Hards like they use to make them. I've never had a Sears Die hard to last more than five years anyway.
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Old 11-20-2013, 11:21 PM   #22
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FYI, many of Sears batteries are made by Johnson Controls. In fact many of the different AGM batteries are made by the same manufacturer, but get different exteriors depending on the order being fulfilled.
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Old 11-20-2013, 11:29 PM   #23
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The Sears Diehard Platinum is made by Odyssey, not Johnson Controls.
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Old 11-20-2013, 11:30 PM   #24
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I would NOT (!) go with any Optima battery, their quality and reliability has taken a giant nosedive in my personal opinion since they were purchased by Johnson Controls who moved their manufacturing down to Mexico.
I doubt the Sears Die hard is still made in the US. Most of the great US manufactured products, have moved out of country, and their QC suffers as a result. Thanks for the information on the Optima battery.

Hopefully, it will be a few more years before I need a new one. "crosses fingers"
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Old 11-20-2013, 11:38 PM   #25
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I queried this information online. It seems that the Interstate and Sears Die Hard batteries are made by the same company.

"Sears Diehard batteries, it is a company that Sears has been doing business with for almost sixty years called Globe-Union, which is a division of Johnson Controls."

Wikipedia says this about the Sears Die hard:
Some of the batteries themselves are manufactured by Johnson Controls Inc. which also manufacture Duralast, Varta, AC Delco, as well as 20 other brands.

Johnson Controls to supply Sears Die Hard Below.
http://www.prnewswire.com/news-relea...-75886762.html
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Old 11-20-2013, 11:41 PM   #26
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I queried this information online. It seems that the Interstate and Sears Die Hard batteries are made by the same company. "Sears Diehard batteries, it is a company that Sears has been doing business with for almost sixty years called Globe-Union, which is a division of Johnson Controls."
there are only like 4 battery manufacturers in the US, interstate and sears are made by globe. Advance auto, napa, autozone, and AAA batteries are all made by Decca iirc
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Old 11-20-2013, 11:59 PM   #27
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Once again, the Diehard Platinum battery is made by Odyssey. In Warrensburg Missouri. Period.

http://www.odysseybattery.com/
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Old 11-21-2013, 10:51 AM   #28
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Once again, the Diehard Platinum battery is made by Odyssey. In Warrensburg Missouri. Period. http://www.odysseybattery.com/
FYI...don't mess with JB. Period.
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Old 11-21-2013, 01:29 PM   #29
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When my battery died a while back it seemed to reset my computer.

When I replaced the battery it ran like crap for a few miles then sorted itself out and then ran great again.

Maybe the computer has to re-learn the engine management and cycle through all the sensors.
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Old 11-21-2013, 02:18 PM   #30
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This recently happen to me as well ( I actually soaked the engine compartment and killed the battery). Was able to jump it and drive around. Ran like crap then died. Jumped again and let it run for a while. Parked it and the next day it wouldn't start at all. Took the battery out and had it tested ( i was showing 11.9v) at Walmart, with intentions of replacing it. It tested out just fine and then the kid behind the counter surprised me. Instead of selling me a new battery, he said the following: "I see this all the time. People kill their batteries by leaving on the lights, and then bring them up here to have them replace. Stick this thing on a deep cycle charge for a day or two. it will fix the issue. if it doesn't, then you are back here spend the money i just saved you."

It worked... no issues since then.
side note, i spent a little time cleaning the connections thoroughly before re-installing.

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