I Changed The Alternator But Now My Car Wont Start?

Don’t worry if you recently replaced the alternator in your car but it still won’t start! There could be several explanations for this, and fortunately, they are all simply rectifiable.

After the alternator has been replaced, the battery is most likely not fully charged. As part of the vehicle’s charging system, the alternator is responsible for keeping the battery charged. If the battery is not fully charged, it cannot deliver the necessary power to start the car.

The possibility exists that the new alternator is not giving sufficient current to the battery. This is especially true if the replacement alternator was purchased from an unreliable supplier. It is essential to purchase from a reputable brand in order to receive the correct power output.

Lastly, there may be a problem with the wiring of the new alternator. This is a less likely cause, but it should still be investigated. Ensure that the wiring is correctly connected and all connections are secure.

If you’ve tested all of the above and your car still won’t start, you should visit a repair. Diagnostic tests can assist pinpoint the precise cause of the problem and get your vehicle back on the road.

Always inspect the battery after replacing the alternator to prevent future occurrences of this issue. It’s also a good idea to frequently inspect the battery to ensure that it’s receiving the necessary charge to keep your car operating.


Cars were and will be my first love and favorite hobby; I decided to start writing about my discoveries and techniques to improve my cars or repair them.