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Battery is going dead

Short in the sysyem as my batter is being drained even when the vehicle is off

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How do I find a electrical short changed the battery and still goes dead

When does it go dead ? Over night , while driving ? Two different diagnostic's ! If it goes dead while driving the alternator is not charging the battery . If it goes dead over night there is a parasitic drain on the battery , something is on , using current . You don't say what make , model and year vehicle but most all vehicles from the mid 80's on have a number of control modules (computers ) . They power down after a set amount of time , an sometimes they don't power down . There are videos on youtube showing how to find a key off power drain .

Apr 02, 2017 | Cars & Trucks

2 Answers

How do i shut the power off it is draining my battery

Probably shorted put somewhere, making a connection and draining your battery.

Sep 16, 2015 | Cars & Trucks

2 Answers

Will an abs problem cause my battery to die. I am having to jump my truck everytime i use it. New battery, 0 after markets.

Without a heat strip on the battery and a block heater, at that temperature the battery isn't going to be optimal at supplying power. Look for a draw on the battery when the engine is not running. It coud be a light in the glove box , trunk or under the hood causing it or your alternator may not be charging to it's fullest. If just one diode in the alternator is shorted you'll drain the battery over night. If one is open, the alternator has lost 1/3 of it's rated output. If your hrad lit switch is on the steering column, it's possible it will turn the head lites on when it gets cold..Happened to me.

Feb 25, 2015 | Cars & Trucks

2 Answers

I have a 2004 deville my battery run down over night


Dec 08, 2014 | Cadillac DeVille Cars & Trucks

1 Answer

My explorer won't start, It was dead, I charged the battery. got a clicking noise. the battery died again, charged it and let it sit for a couple hours, went to try again, didn't even have to...

if the batter has a drain the starter may be at fault the starter can drain a battery with out running i would unhook the battery cables then charge the battery then i would have the starter tested.

Sep 05, 2011 | 1991 Ford Explorer

1 Answer

Vehicle dies and battery want stay charged

take your vehicle to Autozone they can check the batter for free with the batter in the truck they can also check the altanitor, Most likely you have a dead cell in the battery-if not change out the Altinorter

Dec 22, 2010 | 2002 Chevrolet Avalanche

2 Answers

Battery is discharging overnite, vehicle started perfect ran good monday and tuesday, cked all swiches but the batt was dead on wendsday evening when i went to start vehicle. had this problem last year and...

Check for a more than .2A draw when the car is off using an inductive ammeter with your own tool, or at Sears or Walmart or your local auto parts store (if they are so equipped).

How old is the battery in the car? Batteries only last 3 years on average, I learned at Sears, through observing warranty adjustments.

Either there is an external draw on the battery or the battery is internally shorted.

Good luck on this repair.

Jul 22, 2010 | 1999 Jeep Grand Cherokee

2 Answers

Brand new battery dying quickly on my 1999 jeep cherokee. draw was not bad, but it only lasts about 4-5 days without being driven before it dies out.

Never saw an ammeter that had a "normal" reading on the gauge face...You aren't reading the dash gauge are you? Normal procedure is to place an ammeter between the battery and either lead and read draw that way. Then remove each fuse till the draw diminishes substantially. An alternator can draw a bit but it should not be excessive.
Checking charging volts, the meter should not read below about 12.5V even with all accessories on and should not continue to drop regardless of running time. (accessories off reading should be between 13 and 14V).
Also have battery load tested if you haven't done that already just to make sure it is good (even when new) and make sure something simple like a visor mirror light or glove compartment light isn't on all the time.

Feb 19, 2010 | 1999 Jeep Grand Cherokee

1 Answer

Brand new battery put in the car in the evening, by morning the battery was dead. Is there something that is causing the drain on the batter while the car is off?

If your engine is a diesel then it may be the relay for the glow plugs which is shot

As long as the dashboard lights are off when you leave the motor at night there should be no drain effect if there is then you have a short on the loom or a coil

Only way to check it is to hook an meter into the circuit and see how much current is being drawn when the engine is shut off

You then need to unhook items like the starter motor and window motors even the alarm in a one at a time order until you see that drain stop.

Jun 25, 2009 | 2001 Isuzu Rodeo

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