Question about 2004 Kia Optima

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2004 kia optima PO421, replaced cat converter, light came back on. HELP

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  • Kia Master
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Now change the 02 sensor .

Posted on Jan 23, 2013

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Posted on Jan 02, 2017

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SOURCE: gas cap release button is broken on 2004 kia optima

if you can some how manage to get it opened, spray some lubracant on the button inside the door. if not you'll need to replace the release cable.

Posted on Dec 01, 2008

pippall
  • 1486 Answers

SOURCE: The airbag light in dash staying on in my 2004

Under driver and passenger seats are wires that go to seat belt anchors.These are tensioner wires.Unplug the wires from the plug under the seat.clean and replace.Doing this while the ignition is turned off.Then turn ignition back on.In 90% of the time this is your problem.Constant movement of seat causes this or rear passengers kicking plugs off.Good luck phil.

Posted on Jul 10, 2009

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SOURCE: How do I replace the timing belt and the crankshaft sensor ?

if you have never done one take it to a shop because if you have the timing off a little you take a chance of bending valves then you would need a new head

Posted on Jul 23, 2009

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SOURCE: i need the diagram to repalce a serpentine belt on a 2004 kia opt

You need a service and repair manual for that vehicle, about 15 or 20 bucks at any parts store, and some librarys.

Posted on Aug 16, 2009

oneStan
  • 431 Answers

SOURCE: 2004 kia optima,break lights stay on,taillights

It sounds as if your brake light switch is bad, or, your brake pedal return spring isn't pulling the pedal back towards the seat.

First, just pull up on the brake pedal, opposite direction of when you are applying them & see if the lights go off. If yes, you'll need a new return spring. If not, then usually the switch mounted up above the pedal is defective & needs to be replaced.

I believe once that is corrected, the lights should work properly if your parking lights are working, as they both use the same circuit. If not, you'll have to do some testing of those wires & backtrack to the light switch.

The Brake light switch also can have the cruise control switch & other controls associated with it but not always, depending on the specific Model & Year & other options so testing it could require a wiring diagram, I've included a link that will give you the wiring colors for the brake light switch itself. Testing the wiring is the only way to determine any other condition that would be causing that to happen.

Here's the link for the wiring:
http://www.commandocaralarms.com/wiring/2003-2005/Kia/Optima/893.html

It shows the brake switch wires as GREEN.
Good Luck.

Posted on Feb 08, 2010

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1 Answer

Where do I find the fuel filter on a kia optima 2005


How to Change the Fuel Filter on a 2005 Kia Optima

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Kia optima using 16 liters of fuel to travel 100 klms 2004 model


run fault codes to find faulty sensors. Check cat converter for failure and blocking the exhaust

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My 2004 optima has 130000 runs little ruff check engine light came on code says running rich like it could be vacumm leak so replace fuel injector regulator did not solve any thing else it could be?


intake leak, bad plugs, pre cat oxygen sensor. take to kia and have them run full diagnostics. Most likely pre cat oxy sensor or bad plugs and wires.

Oct 13, 2013 | 2004 Kia Optima

1 Answer

What do I replace first when I get an OEM number PO421


P0421....Warm Up Catalyst Efficiency Below Threshold (Bank 1)
sounds like you need to test the O2 sensor which their could be two of them one before the cat and one after ,check the two wires the same colour for a 12v feed and then with the plug out do a continuety test on the sensor .

Jan 30, 2012 | 2003 Kia Optima

2 Answers

2004 Kia Optima has 3 check engine lights on for the following codes - 0741, 0455, 1529. Is this safe to ignore, or how soon to have serviced? Car runs fine, except when stopping for lights, then it kind...


HI there i will try to help .
first code P0741= transmission torque converter is stuck in the off bastion .
1. Check your transmission fluid level to see if low or might need replacing.
2.You might have a Faulty torque converter clutch solenoid valve.
3.If you can check Torque converter clutch solenoid valve harness or connectors
4.If you can check Torque converter solenoid valve circuit to see it is open or shorted.
But first check your trans fluid '''

2 codeP0455=evaporative emission system leak detected .
1. check your fuel cap and mack shore it is on tight before replacing .

3.Code P1529= check T C M it might be do to code P0741.
1.Fix first code P0741and P0455 and clear codes and see if code P1529
comes back.

good luck ziggyone

Sep 14, 2011 | 2004 Kia Optima

1 Answer

Donde se encuentra el filtro de gasolina de un kia optima 2005


How to Change the Fuel Filter on a 2005 Kia Optima

www.geeksoncars.com/how_6754168_change-filter-2005-kia-optima.html
Feb 4, 2015 - How to Change the Fuel Filter on a 2005 Kia Optima. The fuel filter on a2005 Kia Optima plays an important role in the fuel system. It goes on ...

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www.kia-forums.com/...optima/75444-05-kia-optima-no-fuel-filter.html

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Mar 03, 2011 | 2006 Kia Optima

2 Answers

I have a 2004 optima with 186000 miles the ck engine light is on put computer on it and it says that the oxygen sencer or the cat converter is bad, the light has been on about a mouth but now the car runs...


hi you have 2 of these sensors on the exhaust system, the first is on the exhaust manifold on the engine, just locate this and follow it down and you will come to what looks like a bolt with wires sticking out of it, that is the first one, the other one, will be just before the cat it will look the same as the first one, so if you cant find the first one, look for the second one and you will be able to see what you are looking for....and yes these do have a tendency to make the car run rough at times but not all the time...hope this helps please comment and rate thank you

Feb 03, 2011 | 2004 Kia Optima

1 Answer

My 2003 lancer has a trouble code po171 and po421 can you help


there is a recall on the po421 so check with your dealer it a cat. converter code, po 171 is a lean code check for vacuum leak or worn out plugs

Oct 24, 2009 | 2003 Mitsubishi Lancer

1 Answer

Replacing headlight assembly --or cover--for Kia Optima-2004



1. Open hood. Disconnect negative battery cable.
2. Remove five bolts attaching headlight and combination light assembly to vehicle. deb10ad.jpg 3. Pull headlight and combination light assembly forward clear of vehicle. 4. Rotate back cover counterclockwise to disengage from light assembly. 5. Pull socket with bulb straight out of headlight and combination light assembly. Regards, Jeep Brainy

Jun 22, 2009 | 2004 Kia Optima

2 Answers

2002 Kia Optima will not start at times


Check ignition switch, Also Did you ccheck fuel filter.

Ignition switch is probably the issue.

Dec 11, 2008 | 2004 Kia Optima

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