Last updated on October 1st, 2023 at 06:50 pm
A faulty electrical system in a car can play some very tricky games, and your car’s battery is part of that system. If you have a bad car battery, it can make your car’s engine computer (ECU) act a little bit nutty.
For your car’s computer to function properly, it requires a consistent supply of voltage. If your car battery fails to generate the correct voltage, it can cause various issues with your car’s computer.
- The check engine light will probably come on to alert you of potential issues with your vehicle’s engine system.
- You could experience poor engine performance, such as decreased power or difficulty accelerating, indicating the need for attention.
- In automatic transmission vehicles, you may notice funky transmission shifts, like delays or jerks, which could indicate underlying problems.
- Additionally, you might observe an unexplained drop in fuel economy, where your vehicle consumes more fuel than usual, along with other computer-related issues that warrant investigation and diagnosis.
If you’re experiencing issues with your car battery, such as a lack of voltage, it’s important to consider that there may be other underlying problems. While replacing the battery might seem like the obvious solution, it’s advisable to conduct a battery test first. By doing so, you can ensure that you’re not discarding a perfectly functional battery.
What other battery-related things to check before replacing the Engine Computer
If your car battery is not the culprit, there are several other potential issues that could be causing problems with your computer:
- Possible causes of car electrical issues can include:
- A faulty alternator that fails to properly charge the battery and power the electrical system.
- An ineffective voltage regulator that is unable to maintain a stable voltage output.
- Defective battery cables, which can lead to poor electrical connections and voltage drop.
- Corroded terminal connections, which can impede the flow of electricity and cause intermittent issues.
Ensure that these components are in optimal condition to ensure smooth operation of your computer system.
If you have checked all the above and everything seems fine, it is reasonable to assume that your engine computer might be the culprit. So, instead of hastily replacing your battery only to discover other underlying issues, it is crucial to address them first.
Should you require assistance in identifying engine computer problems, our experts are more than happy to help. Visit our website at https://www.fs1inc.com/ or reach us by phone at 516-766-2223.
I have had a new battery installed on dodge avenger and now electrical system acts up a lot. Won’t start a lot any more when shut off… Door locked when battery dead and windows rolled down after dead battery due to freeze.
I am an elderly female and when shut car off and when ready to leave won’t start. Told about windows and door locks. Do I need to replace car since cannot be fixed. I had alternator checked by people who installed battery and said alternator fine. Also had a mechanical system checked and said couldn’t find anything but still does those things. Doors only one time but afraid for fear can’t get home. Thanks
we did not start our 2004 ford taurus for 6 months. We finally got the car started but the dash keeps telling us the driver door is ajar and does not show our mileage among other things on the dash. What do I need to do?