Q: The car is cranking but wont turn over

asked by on

Car started at gas station, whined loud. Drove it ten miles. 15 miutes later it cranks but wont start.
My car has an automatic transmission.

Hi There, There are a number of things that may cause the vehicle to not start, however the whining sound you describe is common when an alternator goes out. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while the engine turns the alternator. The voltage regulator is a unit that regulates the charging of the battery by the alternator and maintaining a certain amperage while the engine runs. When the alternator is not working properly, this may result in the battery quickly losing charge and the car losing all power. You may also notice a whining sound as a result of the bearings inside the alternator begin to fail. I would recommend having an expert from YourMechanic come to your location to diagnose and inspect your charging system.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. The car is cranking but wont turn over

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: 03 buick century p1810 code and wont shift into 3rd gear, transmission has been replaced

Hi there. The major problem with ECU's is that they don't forget stored codes unless instructed to do so. This means that if you were getting this error code; which might be something wrong with the transmission control valve for...

Q: 1991 chevy g20 van replaced wih new fly wheel and starter after 2 days getting clanking sound when i first start vehicle

You should check to make sure the starter bolts did not come loose and remove the lower inspection cover for transmission and check to see if flywheel teeth are damaged or flywheel is loose or bolts for torque converter are...

Q: Cracked,dry-rotted tires with good tread still

Rubber degrades over time. Your tires are constantly exposed to the atmosphere, o-zone, etc. The rubber goes through constant heating and cooling cycles causing the rubber to get harder and eventually crack. As a rule of thumb, for safety sake,...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...