Q: new alternator and battery. Car wont start, any pointers?

asked by on

So i've recently bought a new alternator and a new battery for my car but the red battery light still lights up. And now my car wont start. Can you help me?
My car has an automatic transmission.

Hello. This may be related to either a bad ground connection from the battery or potentially a bad voltage regulator. The other end of the black battery ground cable should be connected to the chassis of the car firmly. If this is not the case, this may potentially cause this problem. I would also recommend having the voltage regulator tested to see if it is working properly as well. If this is bad, it will also cause the light to come on as it will not charge the battery properly.

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. new alternator and battery. Car wont start, any pointers?

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: Won't start anymore

Hello. It sounds like you have a fuel system issue. If the vehicle was running with bad fuel in it then that fuel may have caused the fuel pump to fail or it may have clogged the fuel filter or...

Q: Oil change place could not do oil change because plug is stripped. What do u recommend?

Hello, If you cannot remove the oil plug then have the oil removed using the dip stick tube with a suction machine. I use this on vehicles on the road and can suck all the oil out through the dipstick...

Q: Upon starting, the vehicle has a dry start for about 5 seconds unless it sits overnight.

Hi there. Check the oil pressure sensor and see if its working or sticking. When the oil pressure sensor is sticking or not working correctly, the computer will cut the ignition and fuel off until oil pressure is met and...

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...
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...