Question about 1994 Jeep Grand Cherokee

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Good batt & new alternator.. but battery keeps losing charge

Replaced alternator ( new ), batt was fully charged.. drove it & the batt was going down.. what else could it be? The wires look fine. Its like the alternator isnt charging the batt back up

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  • Jeep Master
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Make sure all connections at alternator are attached. On some, the regulator is inside the computer and if bad, requires computer change.

Posted on Jun 26, 2009

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Having cranking issues and battery isnt charging as suppose to 2004 f250 diesel crew cab


need more info year make model clean your terminals check the output voltage on your alt with a multimeter 12 plus is good if you have a maint free batt look in the eye and check the color or take it to the auto parts store theyll check it for free


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Why does my 96 Cadillac Eldorado battery keep discharging?


First step have the battery tested, a bad cell can cause a internal drain and kill the battery, if the batt is ok then check for interior lights like visors that stay on or interior light that come on by themselves at night due to defective door switches.

Dec 27, 2012 | Cars & Trucks

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New baterry and alternator it crunk but wont start what is the problem


If battery and alternator are good is starter solenoid pulling in? it may be that whilst you have a new battery it may require charging new doesn't mean fully charged, batt may have been on shelf for awhile

May 01, 2012 | 1986 Nissan Pickup 4WD 1986

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My mother has a 2006 LS 430 Lexus with only 5500 miles. The battery dying is a constant issue. She goes to start the car and it is dead. She has replaced the battery three times. No electrics are left on....


It sounds like the Alternator is bad or isn't charging teh battery completely. Or if this is the same station that has been selling her batteries they have a bad batch of weak batteries. Have the battery tested for dead cells. If there are none then put it on a charge and fully charge it and test the alternator. Auto zone can test both and will do so for free but you will have to remove the alternator for testing.

Jan 24, 2011 | 2006 Lexus Ls 430

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Car wont run.


Does it crank well and all that but with no spark or is the battery just dead? If the battery is dead, it either won't charge while alternator is spinning or the alternator doesn't charge well enough to keep the battery charged well. If it jumps and runs indefinitely, battery is done. If it jumps and dies, alternator is done. If battery and alternator are fine, and you have no spark, you may need a new coil, new spark plug wires if they are worn out and too resistant, pick up coil inside of distributor, or you may have some other ignition system issue.

Most times when an alternator fails, it starts charging less and less till the car won't keep running or it won't start the next time. If the alternator hasn't failed, the battery needs replacing. If your battery is 5 or more years old this is a very good possibility. If your alternator failed and you have killed your battery many times before replace them both. Each time you drain a battery to dead you lose about 10% of its current capacity.

If the battery is fine and engine will not turn, starter may need replacing. Hope I helped.

Jan 30, 2010 | 1993 Jaguar Xj Series

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Can a bad alternator cuase a car not to turn over even with a new battery


no if you have a good batt you don't need alt the alt charges batt after you start the car

Jan 21, 2010 | 1991 Dodge Stealth

1 Answer

Car won't start. Replaced battery. worked 3 days. They said it was the alternator. REplaced with new. worked another 4 days. had it check with advance auto said battery good, starter cranking normal....


if there is no charging then its back to the alternator or the way its hooked up? did you recharge your flat battery with a mains charger after it went flat the first time? as no alternator will charge a battery from flat to fully charged,,,,even if you drove around the world none stop! the new alternator may have given up working becouse you overloaded the voltage regulator trying to recharge a flat battery witch would mean it was very week to start with?

Nov 15, 2009 | Pontiac GTO Cars & Trucks

2 Answers

Alternator problem


1.You need to install a Fully charged battery, before you install a new alternator. Otherwise it will burn the alternator up.

2.I read what you typed about installing a new battery. Was the new battery fully charged, and was it installed before the new alternator?
No?
See number 1 above.

Sep 03, 2009 | 2004 Mazda 6

5 Answers

1997 isuzu rodeo


start the car,, leave the car on and disconect the battery if the car still on the alt is good but if the car turn off Replace the alt

Sep 06, 2008 | 1996 Isuzu Rodeo

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I have a charging problem on my 89 camaro


So found the problem it was the seilnoid on the wasnt working properly store said good put it back hit with small hammer fired up so just replaced whole strarter now fires first time sounds awesome had lot of trouble tracking it down went threw new battery's thinking that was prOblem but was bad starter unit try this maybe will help u to

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