Q: Q: Car cranks but will not start.

asked by on

check engine light came on the other day then the car jerked and heard a small pop. now car cranks but will not start. i replaced the battery and the crankshaft position sensor.

My car has 105332 miles.
My car has an automatic transmission.

This may be related to many different possibilities, some of which may be related to a lack of spark and some of which may be related to a fuel delivery problem or a combination of both. For example, if the ignition coils, crankshaft position sensor (which you have replaced), spark plugs, spark plug wires or ignition module are faulty, this may cause the motor to not produce the spark needed to ignite the fuel in the motor.

If there is a fuel delivery problem, this may be related to low fuel pressure, faulty or dirty fuel injectors, a faulty or dirty idle air control valve (this relays information about air intake to the computer which makes fuel adjustments), or potentially a faulty fuel pressure regulator or fuel pump. Fuel delivery problems will typically not allow the proper amount of fuel to be delivered to the cylinders which results in a lean fuel condition which can cause backfiring or simply cause the motor not to start as a result of fuel starvation. I would recommend having an expert from YourMechanic come to your location to diagnose your no start problem.

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. Q: Car cranks but will not 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 barely turning over and would not enough to start. Kept trying and eventually everything was dead. New battery still dead

The first thing to check is to make sure the battery has proper voltage of at least 12.5 volts. Then make sure the battery cable ends are clean and tight. Make sure any corrosion is cleaned off them to give...

Q: Steering suddenly notchy, only when running, fine when engine off, changed PS fluid and no help.

Hi, thanks for writing in. Although it's difficult to diagnose a steering issue remotely, the symptoms you're describing would lead me to the steering gearbox. In some cases, especially with about 175,000 miles on the vehicle, the steering gearbox can...

Q: Some lights don't work - 2011 Mitsubishi Outlander Sport

Hello. Using a VOM check for voltage at the bulb receptacle. You will probably find that the circuit is "dead" at that point. You then have to trace the circuit to find out where it is open. You might have...

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...
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.