Skip the auto shop - Our mechanics make house calls

Q: Mazda 3 2010 has random starting issues

asked by on

2010 Mazda 3

When we turn the key, all dash lights come on but the car will not crank at all. It happens randomly and then will start fine for a few days then repeat the issue. The battery is checked and is fine so I believe it could be the ignition coils. Or could there be another issue?

My car has 108000 miles.
My car has an automatic transmission.

If the engine is not cranking, that is the starter motor is not engaging the flywheel and turning the engine over, that doesn’t implicate the ignition system (e.g., ignition coil(s)). A possible cause of your no start condition is the starter motor itself. The next time the starter fails to operate, try hitting the starter motor with a rubber mallet. If the car then starts when you turn the key, the problem is a weak spot on the armature in the starter motor; by tapping the motor you move the armature slightly. A more "sophisticated" approach to diagnosing this is, the next time you have a no start condition use a voltmeter to check for full battery voltage at the starter motor, while the key is held in the start position of course. If you see no, or low, voltage, during that test you have to trace the circuit to determine why no power is getting to the starter. However, if when the key is in the start position, power is being supplied to the starter, there is no voltage drop, and yet the starter doesn’t run, obviously that would mean you need a new starter motor. If you desire that a certified professional from YourMechanic diagnose the no start condition and, if need be replace the starter motor, please follow up to schedule a mobile diagnostic.

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
  1. Home
  2. Questions
  3. Mazda 3 2010 has random starting issues

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: My car smoked and now it will not start. 2003 Toyota Corolla

Hello. From what you are explaining it sounds like you have a serious internal engine failure. If you got smoke coming from the tailpipe prior to this occurring and if the engine will not crank over then you more than...

Q: How to change from 2lt engine to a V8 please?

Basically, you will have to change just about everything in the drivetrain and there will be quite a few places to reinforce since the vehicle was designed to handle the torque output from a 4 cylinder engine. This swap is...

Q: What should my rotors measure at if replacement is needed?

The front rotors minimum thickness is 23 mm and for pads is 2 mm. The rear rotors minimum thickness is 9 mm and pads is 2 mm.

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.