Skip the auto shop - Our mechanics make house calls

Q: I changed the battery and alternator but for some reason the battery isn't charging what could be the issue

asked by on

Got a brand new battery and new alternator however the battery isn't charging the car turns on and is running but it's not getting the full charge

My car has 160000099000 miles.
My car has an automatic transmission.

A: Check the fuse 65 in the main engine fuse b...

Check the fuse 65 in the main engine fuse box, it is a 7.5 amp fuse. Then check the main fuse A, a 120amp fuse. If both of these fuses are good then you will have to check them for power to see if they have battery voltage. If they do then the alternator should be charging. If either one of them is blown then replace the fuse and recheck the system for charging. You should have battery voltage with the key in the on position at all the wires of the alternator except the black ground wire.

If all the tests check out then the starter is defective if you still are not getting a charge. Make sure your battery cables are all good and not corroded. The ground wire should be grounded on the front of the engine.

If you need some assistance with these checks, consider YourMechanic, as a certified technician can perform these inspections and properly diagnose your battery issue. An accurate repair can then be made once the issue has been pinpointed. Good luck.

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: i installed a new radio and was having issues, i just wanted to know if i can solder the ground wire to the chassis.

Hi there. The ground wire should not have anything to do with applying the brake unless the wire is coming in contact with the brake pedal assembly causing poor contact when using the brakes. You do need to secure the...

Q: I have taken my car to a mechanic today to have minor oil leaks fixed etc,,when i went to pick it up it would not start!!i went ba

I would doubt that the starter was tampered with. Depending on the oil leaks that were fixed, you may have been leaking oil onto and into the starter which could cause it to short out. If the mechanic then cleaned...

Q: How do you open the fuel door?

In order to fill your gas tank, you’ll need to open the fuel door. However, your fuel door is secured in order to prevent possible siphoning attempts. To open the fuel door, you’ll need to use the switch. Here’s how:...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...