Question about 1996 Jeep Grand Cherokee
Have a problem with the battery completely flattening overnight, have heard a clicking sound in the ignition switch and after hooking up the battery charger this clicking corresponded to the b/charger flicking up to 8 amps from 2 amps each time the switch made a sound. Any thoughts here? Is there a common problem with Cherokee (1996 Limited Ed 4.0Lt) having short circuit in the switch? Thank you,
What you have described sounds like the battery itself is internally shorted or has a bad plate, an easy way to tell is if the sides of the battery are bulged out. You can also this, with the battery presumably fully charged, dis-connect the battery cables and then connect a volt-meter to the battery, the battery should be holding at 12.5 volts with the battery cables dis-connected from the battery, and if you can actually watch as the voltage drops off then you know the battery is not any good.
If the battery is less than a year or two old, and checks out to be in good condition, then you might have a power draw on the battery coming from the electrical system somewhere. You will need a test light to check for a power draw in the electrical system.
Make sure that all power accessories are off, including the ignition switch, and that there are no lights left on from an open door or a light switch, when you are certain that everything is off on the vehicle then re-connect the Pos. (+) battery cable to the battery, and then connect the test light lead to the Neg. (-) battery cable and then use the probe end of the test light and connect it to the Neg. (-) battery post on the battery, the test light should be bright for a few seconds and the dim down real low until the test light is almost no longer lighted, indicating that only the KEM (Keep Alive Memory) is using battery power.
If the test light stays bright then there is a power draw or drain on the electrical system, and the only thing that you can do is to leave the test light connected to the battery, and start removing the fuses one at a time until the test light goes out or it dims down low like it should, and then you will at least then know what circuit to look at for the problem.
The clicking sound that you hear is most likely the starter solenoid plunger making noise because the battery does not have enough voltage or amperage to keep the plunger pulled back and also properly engage the starter motor.
This problem is not un-common to any vehicle.
I hope that any of this information was helpful to you in any way at all to help you solve your problem.
Posted on May 16, 2010
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Posted on Jan 02, 2017
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