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07-01-2023, 02:11 PM | #1 | |
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2011 Grand Cherokee won’t start
So the car won’t start by itself but will start on a jump, battery is good, lights are bright. When I took it for a spin after jumping it, it ran perfectly as before(it’s getting enough fuel I think). When I turn the key it does a turn then stops. Any ideas? It’s a 2011 overland with the hemi.
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07-01-2023, 02:35 PM | #2 | |
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Re: 2011 Grand Cherokee won’t start
Did you put a voltmeter on the battery when cranking?
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07-01-2023, 03:38 PM | #3 |
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Re: 2011 Grand Cherokee won’t start
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07-01-2023, 04:20 PM | #4 | |
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Re: 2011 Grand Cherokee won’t start
Yes. Without a voltage check you're just guessing. Or take the battery to any parts store for a load test. How old is the battery?
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07-02-2023, 07:24 AM | #5 | |
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Re: 2011 Grand Cherokee won’t start
Yup, load test the battery. Sounds like it's on its way out.
While you're at the parts store, have them check alternator output as well.
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07-06-2023, 01:25 PM | #6 | |
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Re: 2011 Grand Cherokee won’t start
So I had the battery tested, results came back good. 12 volts. I got a multimeter tested it and got 12 volt, then while I try to crank it the voltage drop to about 10.5, is that normal? Also a more detailed description on what the car is doing, basically when I turn the key I hear the engine crank once and then it quits, it’s not a consistent turn, just once and off(note it’s a push to start)
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07-06-2023, 01:48 PM | #7 | |
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Re: 2011 Grand Cherokee won’t start
Did they do an actual load test or just check battery voltage? 12v static is low. I would check all cables. Clean and tight. At the starter also. Measure voltage at the starter. You may have a voltage drop at the starter.
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07-06-2023, 01:59 PM | #8 |
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Re: 2011 Grand Cherokee won’t start
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07-06-2023, 03:13 PM | #9 | |
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Re: 2011 Grand Cherokee won’t start
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07-07-2023, 05:39 PM | #10 |
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Re: 2011 Grand Cherokee won’t start
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07-07-2023, 05:55 PM | #11 | |
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Re: 2011 Grand Cherokee won’t start
Double check all cable connections. Clean and tight. Check all grounds.
http://www.aa1car.com/library/voltage_drop_testing.htm
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07-07-2023, 06:18 PM | #12 | ||
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Re: 2011 Grand Cherokee won’t start
Quote:
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07-07-2023, 07:05 PM | #13 | |
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Re: 2011 Grand Cherokee won’t start
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07-07-2023, 08:27 PM | #14 | |
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Re: 2011 Grand Cherokee won’t start
I’ve decided to go to my mechanic and have him take a look at it, I’ll make sure to come back to this thread and tell you what he finds. That being said I really appreciate your help I’ve definitely learned a few things
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07-07-2023, 08:44 PM | #15 | |
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Re: 2011 Grand Cherokee won’t start
Ok. I wondering if your starter is bad?
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