Skip the auto shop - Our mechanics make house calls

Q: battery very good but wont start.

asked by on

noticed that battery was weakening though its only 10 mo. old. Had it checked by seller and it came out GOOD. Two days ago, car wont start. I removed the battery, brought it to O'reilly, tested it -still GOOD. Installed it again -car wont start. Jumped it and it started, was able to use it last night. This morning, it wont start again and no matter how I tried,, which is several times, The car wont start. Battery really is good- the windows go up and down real fast. Horn is nice and loud.

My car has 69000 miles.
My car has an automatic transmission.

When you are having the no crank condition, the system will need to have the starter tested to see if it is getting power from the ignition system to operate it. I have seen the starter not work and also have seen it show up like a weak battery and crank the engine really slow.

This can also be from bad cables and connections at the battery and should be checked. The starter will have a big main cable and a smaller cable on it. The big one is from the battery, and the other is from the start relay, and should have power when the key is turned. If you want to have this checked, a certified professional from YourMechanic can come to your car’s location to diagnose the no-start and help you with any repairs that are needed.

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!
  1. Home
  2. Questions
  3. battery very good but wont 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: Car was overheating will turn over but not crank is it okay to put water in if it's cooled dwn with out it

Give it extra time (like 1 hr +) to cool down before adding any coolant, then trickle the coolant slowly into the radiator/coolant recovery tank. It doesn't take very much cold water (at one time) against a hot block to...

Q: I recently bought a 2003 Kia spectra with 144k miles on it. It ran fine till one day I started and the check engine light came on

Let me go last to first. If the timing belt has never been replaced, it's been on borrowed time for a long while now and should be replaced as soon as possible. Internal engine damage is very likely if the...

Q: car will crank but won't start

At 200 thousand miles it could really be just about anything. But the good news is that car that cranks but will not start is usually the easiest kind of problem to diagnose. Your car needs fuel, ignition, and compression...

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...
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...