Replaced the battery. Dealership checked electrical system to make sure it was charging the battery. It passed. Then they did a load test to see if something was pulling a low charge when engine was off. That was negative. Then they said they tested each circuit in the fuse panel and found nothing. Does anyone have suggestions or experience with this?
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Re: Battery keeps going dead
Check the Tension on the Belt. If the Belt Tensioner is not Holding the Belt Tight Enough it will not allow the Alternator to Charge the Battery and will cause the Problem Listed Above. Please Rate My Response! Thanks!
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If you battery is going dead and the check engine light is on then you alternator is going out. Heres what to do, replace the battery and have the charging system check by a local repair shop. If you alternator is bad it will cause the battery to go bad as well, so testing the vehicle with a dead battery will not bring back any accurate results. An altornator is in charge of keeping you'r battery charged to sustain enough power for you vehicle. If you replace the battery and the problem persist, then you have a short or current draw in the system causing the battery to drain. If thats the case go and see a specialist and have them do an electrical diagnosis.
How do you know the battery is good? If you are sure the battery is good (not sure how you determined this), then you should check the charging system. You can do this by checking battery voltage with engine off, then again with engine running. Voltage should be 1 - 2 volts higher with engine running if charging system is working. This is just a quick check, but will definitely identify a charging system that is not working at all.
It sounds like the battery is dead and needs to be charged or replaced, Once the battery has a charge from a battery charger or by having the car boosted with another car to start it, the ignition key's should come out of the ignition. You need power to the electrical system for the ignition to have the keys come out, Note do not force the keys out. Forcing the keys out can and will damage the Pass-lock system to the ignition. Good luck and keep me posted. be glad to know you got your car running again.
Here's the key parts of the electrical system. Battery: the source of your electrical energy Alternator: The charging source for the battery. Driven by the engines rotation via a fan belt Regulator: tells the alternator when your battery needs to be charged and how much. The Load: all of the devices that use the batteries energy
If you have replaced the battery 3 times we can rule out the battery as the problem You had the alternator check and it passed. We can rule out the alternator The load: It's fixed and for the most part you can control most of this with knobs on the dash That leaves only the regulator. If the regulator is giving bad info to the alternator that could account for the problem.
Try this ( if you don't have a voltmeter, places like AutoZone can make these measurements) Start the engine and measure the voltage at the output of the alternator. It should be about 13.5 to 14.0 volts. Then measure the voltage at the battery terminals. It should read the same as what you got at the alternator. If it's not,check the battery cables for clean bright connectors. Use a battery terminal brush to clean the. If this still doesn't help check the regulator.