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Why does my car keep dying with a new battery and alternator?
Some of the most common reasons for a car battery to die repeatedly include loose or corroded battery connections, persistent electrical drains, charging problems, constantly demanding more power than the alternator can provide, and even extreme weather.
Why is my brand new alternator not charging my brand new battery?
In your engine bay, you’ll find a fuse in the fuse box connected to the alternator’s power cable. Overtime also, the fuse tends to become brittle, wear out, and get damaged. When these happen, the current will stop flowing to the battery from the alternator, causing your car’s battery not to charge.
Is there a fuse between alternator and battery?
Most of the time, there’s a high-amperage fuse or fusible link between the alternator’s battery terminal and the battery. Also, there are usually low-amperage fuses in series with the alternator’s sense terminal and ignition terminal. Like any fuse, the primary alternator fuse acts as a circuit protection device.
Why would a car not start if the battery and alternator are good?
If your vehicle won’t start, it’s usually caused by a dying or dead battery, loose or corroded connection cables, a bad alternator or an issue with the starter. It can be hard to determine if you’re dealing with a battery or an alternator problem.
Why is my battery light on with new battery and alternator?
When the battery light comes on usually it means that the battery is net discharging and the alternator is not charging. The proper operation while the engine is running is for the alternator to put out enough electricity to run all the electric load plus have some current left to positively charge the battery.
What to do after installing a new alternator?
What to Look for After Getting a New Alternator Installed Check the Battery. Check the Alternator’s Wires and Cables. Check the Fan and Pulley. Confirm You Used the Right Hardware. Confirm the Speed. Finish By Testing the Alternator. Get a New Alternator at Massey Yardley CDJR.
Can a bad ground cause an alternator not to charge?
Poor ground connections are an often-overlooked cause of low charging output and alternator failure. Voltage drops on the positive side of the charging circuit can cause undercharging.
What connects the alternator to the battery?
The voltage sensing wire connects to the battery, and the ignition wire connects from the alternator to the key switch. All of these wires pull power from the battery through the alternator to keep the electrical systems running and the car operating.
Where is the fusible link located?
They are placed in-line between delicate harnesses and large sources of electrical current in your car—between the battery and alternator, for example. These links must transmit high-current electricity, but also protect the rest of the electrical system from dangerous spikes that could cause a fire.
What does it mean if your car won’t start but the lights come on?
Broken or Damaged Ignition If your headlights can turn on, but your car won’t crank, that means that your battery is charged, but either the starter or ignition is the problem. If the starter or ignition is the problem, a starter engine can be jumped by using a charged battery.
Why wont my car start but I have power?
A failure of the starter motor can be a reason why your car won’t start but has power. To confirm that it is indeed a starter motor issue, you can diagnose a dead battery or alternator. If these are working, and the engine won’t crank at all, the starter motor is most likely your culprit.
Why won’t my car start but the radio and lights work?
If the lights and/or the radio come on but the car does not start, you may also have dirty or corroded battery terminals. The terminals are what connect the electrical system to the battery. Attempting to jump start your car can also either confirm or eliminate the battery as the cause of your issue.
Will battery light stays on but alternator charging?
At times, the battery light remains on due to a weak connection between the car battery and the cables that connect to it. Apart from the issue of battery light on but alternator is charging, you might encounter quite a number of problems with your battery or your alternator that is causing your car slow to start.
Why did my battery light come on then go off?
The battery light indicates that your charging system has a flaw in it which may be a sign of a weak battery, a failing voltage regulator or failing alternator. When the alternator is not working properly, this may result in the battery quickly losing charge and the car losing all power as you have described.
Will a bad alternator drain a new battery?
A corroded or defective alternator diode will faultily continue charging the circuit even when the car off. This, in turn, will drain your car battery and cause the car not to start.
Can a blown fuse drain car battery?
The fuse can not drain anything, it must be the wires or the device that the fuse is for.
