Question about Kia Cars & Trucks
Check engine light came on codes 300 302-304 how do I fix it what's wrong
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
I am not an expert and I don't have the codes in front of me with the meaning but I can offer some advice and hopefully it will solve your problem. First keep the print out of the codes and take it/them with you. Have someone check the oxygen sensor. It's possible that all of the codes you are getting lead up to the computer (electrical issue). I sure hope this helps. Good luck and let me know how things turn out.
Posted on Nov 03, 2008
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
A P0306 code means that the car's computer
has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #6.
Symptoms may include:
the engine may be harder to start
the engine may stumble / stumble, and/or hesitate
other symptoms may also be present
A code P0306 may mean that one or more of the following has happened:
Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
If there are symptoms such as 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 wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.
Posted on Feb 15, 2010
Testimonial: "Thanks for the ideas"
Tips for a great answer:
Jan 19, 2014 | Kia Cars & Trucks
Feb 21, 2011 | 2003 Kia Optima
Jan 28, 2011 | 2008 Kia Rio
May 10, 2010 | 2000 Kia Sportage
Mar 26, 2010 | 2003 Kia Sorento
Mar 07, 2010 | 2000 Kia Sephia
Nov 16, 2009 | 2003 Kia Spectra
34 people viewed this question
Usually answered in minutes!