Skip the auto shop - Our mechanics make house calls

Q: Car won't start

asked by on

My car is not starting.

A: Hello. When a car won’t start, start with t...

Hello. When a car won’t start, start with the basics: If the vehicle has power, then power to the starter motor must be checked, and voltage drops performed. The larger wire at the starter motor should have 12v at all times, and the smaller wire should have 12v in the Start position. If voltage is good, the a voltage drop should be performed between the battery positive, and the same two wires in the Start position. If the reading is less than 0.5v, the wiring is good, and the starter has failed. If there is a lack of 12v at either wire, then the circuit must be checked to find the open circuit. The starter motor is mounted on the underside of the vehicle, so you may need the aid of a mechanic to jack-up your car, and perform electrical tests to properly diagnose your non-starting issue.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: I have OBD codes P0025 and P0015

Hi, thanks for writing in. I'd be happy to provide you some insight on these trouble codes. Code P0025 relates to the camshaft position sensor detecting that exhaust camshaft is in an incorrect position. This affects ignition timing which can...

Q: Loud grinding noise coming from front of the car.

This could possibly be a wheel bearing failure. Wheel bearings can go dry causing a grinding or growling noise when the wheels are spinning. I would recommend having your suspension system inspected for any play or faulty parts. When wheel...

Q: It lost power and now won't start

It sounds like the battery is dead from the alternator not charging. This would account for the gradual loss of power and why the battery is dead and you have no lights. Have the battery charged and tested. Afterwards, start...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...