battery keeps on dieing
10-12-05, 02:51 PM
#1
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battery keeps on dieing
My battery keeps on dieing on me, the alternator is new, but the battery has been realocated to the back of the car, i think that alternator isnt chargeing the battery, but i jumped started my car yesterday and the car stayed on,what you guys think???
10-12-05, 03:26 PM
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Eet fase
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Originally Posted by The Wankler
Start the car, disconnect the battery. If it fails to run, it is more likely you alternator. Otherwise, you may have a short somewhere. Have you checked the fluids in the battery?
10-12-05, 03:51 PM
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any corrosion on the battery cables....or in the battery cables could definitely cause this as well.
Did it start shortly after relocating the battery? Maybe the grounds aren't good after the relocation took place....
Did it start shortly after relocating the battery? Maybe the grounds aren't good after the relocation took place....
10-12-05, 04:03 PM
#7
The Cause of Death
My teachers at my school (I go to a tech school to be an SAE Automtive Tech.) have said NOT to disconnect the battery while the car is running. They said it is NOT a safe way to check alternator efficiency. I don't remember the reason why.
If you want to check if your alt. is putting out the required 14.6v, get a DVOM, or DMM, or whatever...put the positive probe (red) on the b+ terminal of the alternator, and the black probe (negative)wire on your meter to ground. Whatever pops up on the screen will tell you the voltage output of the alternator.
Alt. should put out 14.6v with no acc. on, battery should be 12.6v.
If you want to check if your alt. is putting out the required 14.6v, get a DVOM, or DMM, or whatever...put the positive probe (red) on the b+ terminal of the alternator, and the black probe (negative)wire on your meter to ground. Whatever pops up on the screen will tell you the voltage output of the alternator.
Alt. should put out 14.6v with no acc. on, battery should be 12.6v.
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10-12-05, 04:12 PM
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/\ correct. also the way to check for drain is to disconnect the neg battery terminal. take a DMM in the amp scale, connect one end of the dmm probe to the naked battery terminal, connect the other dmm probe to the battery cable. should read ~ .1 amp or so. if it is high, start pulling fuses till the draw goes away and you now know which circuit is the drainer. do not try to start the car as it blow the fuse in the meter.
on a side note ALWAYS remove the neg terminal first and put it on last.
on a side note ALWAYS remove the neg terminal first and put it on last.
10-12-05, 04:26 PM
#9
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Originally Posted by The Wankler
Start the car, disconnect the battery. If it fails to run, it is more likely you alternator. Otherwise, you may have a short somewhere. Have you checked the fluids in the battery?
10-12-05, 04:45 PM
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bad Idea to check with no Battery
The Battery acts like a big capacitor to level out the voltage to the rest of the car. The alternator can put out Massive voltage as stated earlier and the battery limmits that and also creates a smooth flow (if you will) to the rest of the car. I know that this isn't entirely accurate but I'm trying to explain it in a way everyone can understand.
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