Skip the auto shop - Our mechanics make house calls

Q: Car won't start even after replacing the battery

asked by on

I had to fly to California to help my sick mom. My car was in my driveway for nearly 3 weeks and I forgot to have a friend drive it, so naturally now it won't start. Yes, I jumped the car and drove it a while to recharge the battery. But the next day, it wouldn't start at all. The mechanic installed a new battery - but still Won't Start!! Please tell me what to do.

A: It depends on the nature of the no start. I...

It depends on the nature of the no start. If the vehicle is not cranking, then the battery charge level needs to be checked. If the battery is dead then you likely have a parasitic draw taking the battery charge level down. If the electrical system is dead, there is a 100A battery fuse in the engine compartment fusebox. This fuse can blow from an arc or not clean connection when the battery was replaced. If the vehicle cranks but does not start, then you will have to start looking at the engine control system, like fault codes that need to checked and corrected. Fuel pressure and spark plugs will need to be looked at as well. You may want to enlist the help of a mechanic, such as one from YourMechanic, who will have the training and expertise to diagnose the engine electrical system.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: After 'check engine' light, diagnostic revealed P0171 and P0402

The first code, P0171, is an indication the engine is running lean. This code can indicate anything from clogged air and fuel filters to problems with O2 sensors and mass air flow sensors to intake gaskets. The other code,...

Q: My car has a rough idle, cuts off sometimes at a complete stop, and hesitates during acceleration

Hi - this could be a problem with the idle control valve, either dirty or failing. Leaking fuel injectors, clogged air filter, or low fuel pressure might also cause the symptoms you have noticed. I would recommend having a...

Q: Idles good but cuts out when trying to drive it normally.

There are a couple of ways to go about this and a few things have to be checked. The fuel system must be checked for the proper pressure going to the engine. The ignition system should be checked for its's...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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.