Skip the auto shop - Our mechanics make house calls

Q: Car won't start, needs alternator.

asked by on

My car has a new battery, starter, and fuel pump. It is now dead. I am assuming it needs a new alternator.

A: Hi there, I am not sure why all those compo...

Hi there, I am not sure why all those components were replaced, but we can at least rule them out. A car basically uses the battery during start up. It provides power to the starter. Once the car is running the alternator takes over the cars electrical needs and recharges the battery for next time. If the alternator goes bad, not only will it not replenish your battery, it will drain it. Actually your car will drain it. The car will continue to run until the battery get too low to sustain the vehicles electrical needs. My advise to you is to seek the help of a properly trained technician. Replacing parts that are not needed on a car can get expensive quick, not to mention cause a lot of frustration. A correct diagnosis can save you money and time in the long run.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: My Jeep is flooding itself out after shutting it off and starting it back up

I would check the coolant temperature sensor, which is an input to the fuel injection. If it has failed and is sending the engine an incorrect temperature reading, the engine will get too rich a fuel mix and will be...

Q: Can this van's alternator be put in a 2004 chevy impala?

The alternators on the two vehicles are not compatible with each other. The computers on these vehicles control the alternator charge rates and you could have a computer problem and should have the system diagnosed by a qualified mechanic like...

Q: My car starts fine and I can drive it perfectly fine for about 15 minutes then it bogs down and will not move.

Hi there, thanks for your question. The fact that the car starts up and runs fine for 15 minutes before it stalls suggests that it is likely related to an air/fuel issue. There is something known as a mass air...

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 Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.