Q: Jumper cables crossed.The car wouldn't start. Found it was a fuse that blew which we replaced. The car turned on but then we had t

asked by on

Crossed the jumper cables. Car wouldn't start after that. Figured out it was a fuse that blew which we replaced. Then we replaced the alternator.The car was working fine. But then the battery started dying again after a couple of days. So we have to carry w/ a portable battery charger because we don't know when the car is not going to start. What can it be that is sucking up the battery. Please help

My car has 90000 miles.
My car has an automatic transmission.

If you are very lucky, you may just need a battery. When you cross the jumper cables, you can do a lot of damage in the blink of an eye. If it just trashes the alternator and the battery, you have beaten the odds. You could try disconnecting the battery to see if it still goes dead. If it does, you may just need a battery. If it doesn’t go dead when disconnected, then you have a draw in the system. In your case, you might have damaged one or more diodes in one of the many control units that inhabit your car. Testing for an off key draw is time consuming and requires a pretty thorough knowledge of the car’s systems. You can have this thing checked out by a pro by contacting Your Mechanic. They can send a technician to your home or office to check out your battery drain and advise you as to the next step.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Jumper cables crossed.The car wouldn't start. Found it was a fuse that blew which we replaced. The car turned on but then we had t

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Why does my VSA, engine light and a quotation mark in a triangle mean, also why doed my car shake and then stop

Hello, thank you for writing in. The vehicle is warning you that there is an issue with the Vehicle Stability Assist. This means that the ABS system, wheel speed sensors, and the various other inputs for the VSA system will...

Q: hello

If you are having a problem with your vehicle, please describe the question in detail and we are happy to assist in any way we can.

Q: Idk

Hello, thank you for writing in. When a vehicle has alternator issues, the entire car is forced to run off of the battery. As you can imagine, this stresses out the battery and can cause it to prematurely fail. Start...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.