Question about 2005 Jeep Grand Cherokee

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Electrical system failure. Replaced alternator, battery, a week later entire system shuts down and does not start, click or anything. Where/what can I start looking at now to fix problem? when vehicle was towed home, the next morning I jump started it and it started for a few seconds, soon as i removed cables, she died again....

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  • Jeep Master
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Sounds like a short in the system. If you can put a charger on the system, I recommend you pull the fuses one at a time and look for a spark when reinserting them. There are only a couple circuits that should spark when the key is off. After narrowing it down that way, you can start checking the wires and components on those circuits that sparked. You can also do this with the fusebox in the engine compartment.

Posted on Sep 06, 2010

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Posted on Jan 02, 2017

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3-yr old battery went dead in my 2002 chevy S10 pickup


Yes, it sounds like your alternator is short circuited internally. Replace alternator with high quality rebuilt unit
how does the alternater works
Alternator and Charging System A battery is needed to power the operating system of your car. Once the vehicle is running the battery is charged by the alternator which is driven by the engine. While in operation the alternator creates electricity, about 13.6 to 14.3 volts, and recharges the battery to its original state of charge. The alternator is one of the hardest working electrical components in your vehicle. When your vehicle is running the alternator is busy creating electricity to provide the engine and the car accessories with needed power. When the car is not running and your battery is severely discharged some electrical components may still operate or operate poorly. Typically, these components are designed to operate properly at 12 volts; if the system voltage is low it can cause erratic symptoms.
to check out how the alternater looks .
When jump started a severely discharged battery can cause the alternator to overload and internally fail. If this occurs replace the battery before replacing the alternator. This will help prevent a second alternator failure. Most vehicles use a multi-ribbed belt connected to the engine to rotate the armature inside the alternator. If the belt fails it should be replaced immediately. Belt tension should be taught. If it isn't, check the belt tensioner. It may need to be replaced or the incorrect size belt may have been installed. Either of these conditions can cause the vehicle to stall and not restart.
click the link
http://www.2carpros.com/how_does_it_work/alternator.htm

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3 Answers

I have a 1998 grand caravan.for the past four weeks.every week I'm dealing with the same problem.when I turn the key my engine starts then drains I turn key again it just make a clicking sound and I'll...


Try cleaning the battery cables. Then get the battery and charging system tested. STOP throwing parts at it. A clicking starter is NOT the sign a bad starter makes. You've already wasted that money.

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Sounds like the alternator has gone bad. Jump start the car and check the voltage at the battery. You should see around 14 volts if the alternator is working. If you see around 12 the alternator is not charging.

Labor rates and parts pricing various greatly depending on where you are. Your best bet to find the most accurate pricing for your area would be to call some local shops to get some phone quotes.

You can expect anywhere from $300 to $600 to have the alternator replaced at a shop. If you do it yourself you can expect to pay $100 to $275 for the alternator at a parts store.

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Do you know what a wiring diagram is an what it's used for ?
http://www.bbbind.com/free_tsb.html

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The voltage regulator inside the alternator has failed. Replace it ASAP and fully recharge your battery before driving again to avoid battery failure. If you attempt to drive w/ a faulty alternator, the battery may short, boil over, or completely discharge and may then need to be replaced.

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sounds like alt. wasn't charging/or bat wasn't taking charge. take bat to have tasted. if its ok. suspect the alt. with a good bat. the voltage at terminals when running with lights on should be 12-14.5.

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1 Answer

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Sound like the car is not recharging the battery as you drive. Take it to a different shop and ask them to test the alternator and entire charging system as well as the battery.

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