Skip the auto shop - Our mechanics make house calls

Q: Engine stalling

asked by on

2003 Kia Sedona starts and runs for one minute then dies. Restarts and does the same thing. Threw a code the other day of cylinder two misfire. Cleared the code, still has the problem but hasn't thrown a code again. Changed spark plugs, they were very dirty dark with some ash on them.
My car has an automatic transmission.

Engine misfires can be caused by many different problems and are generally caused by either a spark or fuel issue or in some cases, a combination of both. Spark related problems generally will result from things like ignition coils, crankshaft position sensor, spark plugs, spark plug wires or ignition modules not working properly.

When the misfire results from a fuel related issue, this is commonly related to a lean fuel condition (lack of sufficient fuel supply to the motor). Fuel related misfires can be caused by many different things such as low fuel pressure, faulty or dirty fuel injectors, a faulty O2 sensor, a dirty or failing mass air flow sensor, a faulty or dirty idle air control valve or a vacuum or intake leak. When the fuel supplied to the combustion chamber is insufficient, this results in an ignition (spark) that is igniting a less than balanced load of fuel and air. This results in a misfire or an explosion in the cylinder that is much less powerful than the other cylinders. This creates a loss of power that resonates throughout the motor additionally causing other problems with ignition and fuel timing. Due to the number of different things that may cause an engine misfire, the quickest and easiest way to diagnose this type of problem is to hook the vehicle up to a scanning tool which will download any potential fault codes that may have registered in the vehicle’s computer as a result of the poor running condition. I would recommend having an expert from YourMechanic come to your location to diagnose your misfiring problem.

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. Engine stalling

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: Why does my steering wheel vibrate when I'm driving. Please help, me I'm very concerned and worried.

Hi there. There are typically two items that cause the front end or steering wheel to vibrate while you're driving. If the vibration occurs below 40 MPH, it's usually an indication that a front end suspension component, such as CV...

Q: I tore/damaged the hard plastic/leather on the rear right door of my 2010 Lexus RX 350.

You will not need to replace the entire door. The door panels can be installed separately and would need to be removed and replaced. I would suggest having a professional from YourMechanic come to your location to inspect the damage...

Q: I changed the spark plugs and now my car is puttering, revving up on its own, and making a whistling noise

If these symptoms did not exist prior to the spark plug replacement, it would appear as if something was disturbed, disconnected or broken during that maintenance. You want to make sure that all of the plugs were installed with the...

Related articles

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.