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Misfire on my 2004 kia rio

Code p0300 on my 2004 kia starts to stall out as soon as it gets worm idle is bad so I did a compression check on all cylinders# 1=120 2=125 3=129 4=145 what could be wrong?

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  • 64 Answers

Check coil packs

Posted on Mar 31, 2014

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Fuel fiter or spark plugs?

Posted on Aug 12, 2009

kapishtech
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P0171 indicates a lean condition. The most common cause of this is a defective mass air flow sensor. Also check if any vacuum leaks.Replace MAf sensor,if cleaning the MAF does not help.
Thanks.

Posted on Oct 01, 2010

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SOURCE: auto question,I have an 96 Dodge Ram w/ 5.2L V8

I would check the injector. Pull the plug and check for corrosion. Use on ohm meter to check the injector. The resistance should be 11 to 15 ohms. Check it against another injector. they should be close. You can also check the injector plug. best to use is a noid light, but you can use the meter. set it to dc volts to check. the numbers should jump everytime it fires. since you got a 300 and 301 misfire it tells me that you have an intermitant misfire in cylinder 1. The other sensors are still good don't replace them. The coil is still good, because when it starts to go, it will have misfires on all cylinders or will not work at all. The crank sensor is the one that detects the misfire, again don't replace it because it's not bad, it's just doing it's job. If the injector and harness check out good then I would start check the cylinder for compression and mechanical problems

Posted on Nov 24, 2010

ginko
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SOURCE: 2002 Chevy Trailblazer, service engine soon

Hi.

The check engine light, driving problems and smell was in consequence of the misfires. If now the car drives fine, the vacuum leak could have been the cause of the original troubles. As far as I understood now the problem is only when idle.
Ensure that you have replaced the air filter , also double check vacuum and check/clean the air intake duct and sensors (IAT, MAP- see here for removal). Those are factors that can affect and cause misfire during idle. The IAC valve can also cause similar troubles and must be checked.

All the part listed above may cause lean or rich mixture. The problem is not necessarily detected by the O2 sensors in the exhaust and may result in no lean or rich code being stored in ECM.

If mixture and air intake are not responsible, and if the problem does not only occurr when idle, check the high voltage wires from coils to spark plugs (particularly if a code on a particular cylinder comes back). Check timing, valves, EGR and fuel pressure/fuel pump. Try doing an injector cleaning and check injectors (both spray and voltage).

Posted on Dec 20, 2010

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SOURCE: My kia rio 2004 starts

idle air control valve
Best regards
Ck

Posted on Mar 07, 2011

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Random multiple misfire P0300, P0302, P0304 on 2006 Kia Rio


A competent mechanic will check all probable causes associated with these DTC codes.
Code P0300: Random-Multiple misfire detected. Probable causes:
1. Vacuum leaks, damaged hoses, or improper routing
2. Fuel contamination
3. Ignition system - Ignition module, coil, spark plugs and wires
4. Fuel system
Code P0302: Cylinder 2 misfire detected. Probable causes:
1. Control unit software in need of updating
2. Faulty PCM or ECM
3. Faulty fuel injector
4. Ignition system
5. Fuel system
Code 0304: Cylinder 4 misfire detected. Probable causes:
1. Control unit software in need of updating
2. Faulty PCM or ECM
3. Faulty fuel injector
4. Ignition system
5. Fuel system

Be sure the invoice enumerates all of these probable causes as having been checked. Also, some of the replacement parts installed earlier may be faulty.

Jan 19, 2014 | Kia Cars & Trucks

1 Answer

Cylinder #1 misfire 2001 kia rio


You forst need to see if that cylinder is getting fuel, this requires an injector flow test be run by a dealer or a well equipped shop, also you at home can check for intake manifold vauum leaks with a can of carburetor spray. You should also run a compression test on all cylinders and see if that one cylinder is lower than 5% from the hightest reading.

Jul 16, 2013 | 2001 Kia Rio

1 Answer

Kia rio 2003 scanned & found p0102 faults are stalls immediately after starting, inability to acclerate, misfire


p0102=Mass or Volume Air Flow Circuit Low Input
p0300=Random/Multiple Cylinder Misfire Detected

sounds like its out of time

Sep 25, 2012 | 2003 Kia Rio

2 Answers

Kia rio 2003 errorcodes 1166,102,1505 1507,300 found on the scan what is the reason


Hi there:P1166 - HO2S11 Heater Circuit Fault (Bank 1 Sensor 1)


P0102 - Mass Air Flow (MAF) Circuit Low Input

A code P0102 may mean that one or more of the following has happened:

  • The MAF may be disconnected, or a wiring connection may be bad
  • The MAF may be dirty or otherwise contaminated (Note: if you use a reusable oiled air filter, be careful not to apply too much oil or that can contaminate the MAF).
  • The MAF sensor may be faulty
  • The vehicle computer may be faulty (very rare)

Possible Solutions

The simplest thing to do is to reset the code and see if it comes back. Then start with the cheapest, easiest repair procedures:

  • Verify that the Mass Air Flow Sensor wiring is connected properly and that there are no broken / frayed wires.
  • Inspect for any air leaks near the MAF sensor.
  • Take the MAF out and clean it using a spray cleaner such as brake cleaner or electrical contact cleaner. Be gentle with the sensor.
  • Check the voltage of the MAF sensor (refer to a repair manual for vehicle specific information)
  • Replace the MAF sensor.




P1505 - Idle Air Control System At Adaptive Clip


P1507 - Idle Air Control Underspeed Error



P0300 - Random/Multiple Cylinder Misfire Detected
A P0300 diagnostic code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.


A code P0300 may mean that one or more of the following has happened:
  • Faulty spark plugs or wires
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector(s)
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Stuck/blocked EGR valve / passages
  • Faulty camshaft position sensor
  • Defective computer
  • 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.

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.



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Aug 20, 2012 | 2003 Kia Rio

1 Answer

I have a 2004 Spectra. Driving to work this morning, car stalled out twice. Cranked car later in the day and the engine sputtered and idling high to keep from dying. Engine smoothed out, but MIL came on...


Well, it is either a timing belt/chain going out or a bad crank position sensor most likely causing the other problems. The O2 sensor may be bad as well but that usually doesn't cause the Misfire. The vehicle on board computer is confused, that is why it is throwing all those codes. and why it gives you that 1166 code which isn't defined. Check the crank position sensor and the timing and timing belt first. Once you have that fixed the rest should clear up.

Dec 29, 2010 | 2004 Kia Spectra

2 Answers

2002 Kia Rio runs rough when idling


well spend some change and have a simple tune-up.  Plugs and filters and readjust the idle.

Mar 14, 2009 | 2002 Kia Rio

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