Question about 1990 Chevrolet Lumina

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Battery keeps going dead

Have a short somewhere whenever i reconnect the battery terminals there is a good spark no lights or anything on drawing juice. if i leave the battery disconnected and reconnect it when i need the pick-up it starts. if i leave the battery connected and dont drive it for a while the battery goes dead. i have had the battery tested and its good, and only 6 months old. is there someway or where or how should i start to look for a short?

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Yes you can get test light disconnect battery positive and but the clamp on the positive cable and but it on positive battery terminal and see how bright the light is it should be very dim make sure all door and every thing else is closed and off if the light is bright then start pulling fuse one at a time in till it gose off the see what that fuse runs and then you can hope to find it from there hope this helps

Posted on Sep 08, 2009


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potentially two problems It sounds as if you have a "Dead Cell" in your battery. If your battery light is not on, or comes on just before the car dies, it is not your alternator.
If your battery has a dead cell, it will pull the energy from the existing cells and kill your battery in the same manner that you are describing.
Have you tried a new battery? If so, it is your alternator....but it doesn't sound like it. You may also have a direct short. Pull the negative terminal off the battery, wait a few seconds and touch it back to the post. A little spark is normal as it is drawing current to power the system; However if there is a significant spark or draw, you have a direct short. In short, test the battery, (most any chain auto parts stores will do this free of charge) If the battery is good, have the alternator checked for functionality. if that is good, you may have a direct short or a computer problem. Hope this helps.

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sounds like something is draining the battery while parked. was the replacement battery new? get it checked for faults, can happen.. buy a cheap amp meter with a blade fuse probe. remove each fuse one by one and look for high current values while car turned off. this should then give you an idea of what in the car is draining battery, refer to manual for items on fuses. dash lights take very little current to light but to turn the engine takes loads, hence no spark

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If the mechanic is saying that,so that it means the charge in the battery is being use somewhere when the car stay overnight.To be sure of that,i will advice you to make a simple test but its benefit knowing that,well take out the negative terminal of the battery,now rub the negative terminal to the negative terminal of the battery,while rubbing if you see a spark ,that means the charge is being use somewhere and must be checked and if not that means no charge is being used so confirm it,hope that clear your mind and help you

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How long do you leave car standing for??

Need specialised gear to check for this (Ammeter of at least 20amps, voltmeter)

With all doors closed place ammeter across -ve battery terminal (Battery terminal removed. (Be aware BEFORE doing so you will need the stereo code to make it work again)
Measure any current draw. Should be zero. If there is current draw, if its below 1.5 to 2 amps then a light is on somewhere, boot, glove box under bonnet.

To eliminate current draw you may need to disconnect main poer feed to alterantor, which will eliminate it in test.

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The proper way to troubleshoot a current drain is to disconnect one of your battery cables, and put an amp meter between the battery and the disconnected cable. Measure how much current is there, and then you can systematically pull fuses out of your fuse panel to see what circuit is drawing power. Some current is expected, such as the keep alive circuit for your radio, and a dome light if you have a door open.
You should be able to narrow down your search area, by your symptoms. If you have not had your alternator tested, do so, as sometimes they appear to be working, but have a current draw thru the voltage regulator.

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The battery is being drained by some electrical equipment or componant...
remove one of the battery cables onthe terminal and thn try to rub it on the terminal and see if the sparks are there and if they are heavy.
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You definitely have a drain/short somewhere. I recommend that you look in the yellow pages under autoelectric shops. These shops have scanners that can often locate the problem so they or you can resolve it. good luck.

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Sometimes when i turn the car on it seem like something shocks everything out and when i installed the battery it sparks fire please help

First, make sure you replaced the battery with the terminals in the correct spot. Some batteries have opposite positive and negative ends. Red to red and black to black(neg). With a small car the biggest draw is the starter. If you can get everything going you can take it to Autozone, Murrays, or Reillys and they can lay a guage on the starter wire and tell you if the starter is going bad.
If you have anything on in the car when you reinstall your battery, their will be a spark of varying degrees.
Your underhood light will cause the battery to spark. So will the heater or A/C if the controls are not turned to OFF. The rear window defroster is a big drain and if the relay is stuck on you will get a big spark. The radio would spark less if it was on when the battery was reattached. Also the automatic headlights will cause a spark.

Since you started replacing the battery, I am guessing this problem may be causing a dead battery.
Unless the battery tests bad, a short will draw down about anything you put in the car until the short is fixed.

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