Q: Everything under my hood is new and my car won't start

asked by on

I just got a new battery 10 days ago and my alternator is new and my car won't start.

My car has 12600 miles.
My car has an automatic transmission.

Without additional diagnosis on the vehicle to check to see if the charging system is working correctly to recharge the battery or if the battery is having an electrical draw on it making it go dead will be hard to isolate the cause in this venue. I have seen aftermarket alternators not work correctly since the system is computer controlled and they tend to not charge correctly and cause the battery to go dead. Make sure charging system will keep up with all accessories on and voltage stays above 12.8 to 13.2 volts with lights and blower on. If not then alternator or computer may be at fault and will need further testing to isolate cause.

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. Everything under my hood is new and my car won't start

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: Engine misfiring in a 2002 Pontiac Montana

A misfire could be caused by number of problems but since you are getting the p0204 and p0203 I believe that is is probably an injector that is causing the misfire. I would replace the injector for the number 3...

Q: Recently purchased car can't pass a smog check

Hello! I would definitely advise having a basic inspection done before the vehicle is driven on a long trip. Any qualified mechanic, such as one from YourMechanic, will be able to inspect your misfiring issue and let you know if...

Q: Check charging system light is coming on 2006 Ford Taurus

Hi there - your symptoms suggest that your alternator is not keeping the electrical system properly charged. Low system voltage can affect the performance of the engine directly. Poor alternator performance could be a slipping serpentine belt, failed voltage regulator...

Related articles

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...