Question about Kia Sedona
Check engine light come on then start flashing
There is no such thing as a reset for a misfire condition
You have to diagnose & resolve all cylinder misfires,fuel trim
issues & all 8 emission monitors have to run clear, before you
can be accepted for inspection
You have a class B Misfire that will set a MIL Lamp
You have a class A Misfire that will cause the light to flash
& also ruin your exhaust converter & oxygen sensors
So you have work to do & maybe part with lots of money
along the way
Posted on May 10, 2014
First fix the problem, Spark Plug? Spark plug wire? Coil? Then you will ned a OBD2 tool to turn it off. a Auto Zone store might do it for you. they do have the tools except for California.
Posted on May 10, 2014
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Posted on Jan 02, 2017
SOURCE: Check engine light
A multi misfire may mean that one or more of the following has happened:
Faulty spark plug or wires, Faulty coil (pack), Faulty oxygen sensor(s), Faulty fuel injector(s), Stuck/blocked EGR valve / passages, Faulty camshaft position sensor, Defective computer.
The engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wire, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the the problems were faulty fuel injectors.
Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.
Good luck and hope this information helps, keep me posted, be glad to help you get the truck running 100% again. Not sure if your running a K&N air filter, and if you are there may be a flim of oil on the MAF sensor that is making you run lean. You may want to spray down the MAF sensor with a can of MAF cleaner.
Posted on Jul 02, 2009
Yep!.. Typical with an engine cylinder misfire. Inspect the plug and ignition wire, especially the insulator. If you see a 'christmas tree' pattern on the insulator, that's where your problem is.
Posted on Oct 19, 2009
I'd have fuel pressure checked, and at the very least, replace fuel filter. Not unusual to get multiple misfire codes due to low fuel pressure, thus starving cylinder(s), and causing the misfire code(s).
Posted on Apr 25, 2010
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