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Old 03-31-2014, 10:01 AM
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Jeep Wont Start

I tried starting my jeep and when I put the key in it goes haywire. The speedometer goes back and forth and there is a ticking noise even when I take the key out. It cranks when I jump it off but after I turn the key off it doesn't crank again
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Old 03-31-2014, 10:04 AM
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Re: Jeep Wont Start

Its a 2000 Jeep Grand Cherokee Laredo 4.0
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Old 03-31-2014, 10:35 AM
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Suggest replacing battery/alternator.
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Old 03-31-2014, 11:15 AM
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Re: Jeep Wont Start

If you have a multimeter i would suggest to measure the battery voltage first. A fully loaded battery has 12.7 V (half an hour after engine off or putting it on an external charger.) When it is around 12.2V its almost fully discharged. This is just a simple check of the battery which you can do at home, but a battery load test tells more about the state of the battery.
Sometimes dirty battery poles can give a problem like yours, so check them and when necessary remove the battery connections and clean them well. The problem could be with the alternator as well, but it needs to be tested first to know for sure.
Oh, and by the way, your jeep is a WJ.
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