Car Keeps Dying New Battery And Alternator

Last Updated on March 12, 2023 by Ryan

A car that keeps dying, even after the installation of a new battery and alternator can be caused by several factors. First, the charging system may have an issue with its ground connection. Second, there could be a problem with the voltage regulator or wiring harness connected to it.

Third, corrosion on any of the connections between the components could prevent proper power flow to keep all systems functional. Fourth, failure in other parts such as spark plugs or fuel injectors could also lead to engine stalling while driving. Finally, worn out belts and hoses could cause excessive amounts of heat resulting in shutdowns when they fail completely.

A qualified mechanic should always be consulted if these conditions are encountered since they will need to inspect each component thoroughly before determining what needs replaced or repaired to get your vehicle running properly again.

If your car keeps dying even after you have replaced the battery and alternator, it is important to find out why. It could be a result of an electrical malfunction, such as a bad ground or corroded connections in the charging system. Alternatively, it might be something simpler like a failing fuel pump or clogged air filter.

In any case, it is best to take your car to a professional mechanic for diagnostics and repair so that you can get back on the road quickly and safely!

EASY FIX! Car Battery Keeps Dying? How to fix in 1 minute

Brand New Car Battery Dead After a Week

When you buy a brand new car battery, it should last for at least several years if properly cared for. Unfortunately, in some cases, the battery may die after just one week of use. This could indicate a defective product or incorrect installation process by your mechanic.

If this is the case, you should speak to the manufacturer and/or installer about getting a replacement battery or compensation for their mistake. Additionally, make sure to check your vehicle’s charging system regularly as this can be an issue that leads to early battery failure.

Car Battery Dead After Sitting 5 Days

A car battery can become drained if left to sit for 5 days or more without being used. This is because the battery will slowly discharge over time, even when not connected to an electrical system. If a car battery has been left sitting for 5 days or longer, it’s likely that it won’t be able to start the vehicle and needs to be replaced or recharged in order to restore power.

Car Battery Keeps Draining Overnight

It is always a cause for concern when your car battery keeps draining overnight. This could be due to a number of potential causes, such as a faulty alternator, corroded cables and terminals, or an electrical drain from accessories like the radio or interior lights that remain on after you turn off the engine. It is important to diagnose and fix this issue quickly in order to avoid more serious damage to your vehicle’s electrical system.

New Battery Keeps Dying

New batteries are designed to last for many years, but if your battery keeps dying quickly it could be due to a variety of causes. One possibility is that the battery has reached its end of life and needs to be replaced. You should also check for corrosion on the contacts or other signs of damage, as this can cause the battery to drain faster than normal.

It’s important not to overcharge the battery either, as this can reduce its lifespan significantly. If all else fails, you may need professional help from an automotive repair specialist in order to diagnose and resolve the issue with your new battery.

Car Keeps Dying New Battery And Alternator


What Can Drain a Car Battery Besides the Alternator?

A car battery can be drained by several other sources besides the alternator. For instance, a short circuit within the vehicle’s electrical system can draw too much power from the battery, draining it quickly. Furthermore, leaving certain electrical components on when not in use (like headlights or interior lights), will slowly drain the battery as well.

Finally, an old or worn-out battery may simply lose its charge over time due to natural aging and wear-and-tear.

Why Would a Car Not Start If the Battery And Alternator are Good?

If a car’s battery and alternator are both working properly, there could still be other issues that prevent the vehicle from starting. It may be something as simple as a loose connection or corroded cable in the starter circuit. Issues with the spark plugs, fuel pump, distributor cap, timing belt or even a clogged fuel filter can also lead to an engine not starting despite good battery and alternator health.

If none of these more common causes check out then it might be worthwhile to have the car checked by a professional mechanic for any underlying mechanical problems.

Can a New Alternator Drain a New Battery?

Yes, a new alternator can drain a new battery if there is an issue with the charging system. The alternator is responsible for providing power to the electrical components of your vehicle while it’s running and also for recharging the battery. If it isn’t functioning properly or is worn out, then it won’t be able to efficiently recharge the battery, leading to over-discharge and eventually draining it completely.

Additionally, any faulty wiring in between the alternator and battery may cause issues that result in draining of the battery as well. Therefore, regular maintenance on your charging system should be done in order to prevent such problems from occurring.

Why Won’T My Battery Stay Charged With a New Alternator?

If you have recently installed a new alternator in your vehicle and your battery still won’t stay charged, it could be due to several different factors. First, the alternator may not be connected properly or the voltage regulator might need adjusting. Additionally, if the wiring between the battery and alternator is damaged or corroded then this can prevent proper charging of the battery.

In some cases there may also be an issue with either the starter motor or one of its components which prevents efficient operation of both systems. Finally, it’s possible that there is an internal problem within the alternator itself such as worn out bearings or faulty diodes which can cause improper charging of batteries. To determine what exactly is causing your battery to not stay charged after installing a new alternator, it would be best to take your vehicle into a certified repair shop for diagnosis.


This blog post has discussed the process of diagnosing and fixing a car that keeps dying, even after replacing the battery and alternator. It is important to remember that all cars are different and require individualized attention when it comes to maintenance and repair. Regular checkups by a qualified mechanic can help identify potential issues before they become major problems.

If your car continues to die despite having new batteries or alternators, have it checked out as soon as possible for further diagnosis in order to prevent any more costly repairs down the line.


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