Question about 1999 Kia Sportage

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New 02 sensors but still have codes

99 kia sportage getting ready for smog. replaced both 02 senors, both cats, exhust manifold plus basic tune up, reset/erased all codes, but i still get the 02 codes please help

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  • dehma64 Feb 17, 2012

    wouldn't that throw a code for the maf



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  • 202 Answers

Massair flow meter or drawing air which confuses 02 sensor cos of wrong air fuel mix

Posted on Feb 15, 2012


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 137 Answers

SOURCE: 02 kia fail smog high nox

if the engine computer says that you have a slow O2 sensor what it means is that the sensor does not react as quickly as it should and it needs to be replaced. nox is oxides of nitrogen, a product of too lean combustion which causes cylinder temps to go too high. it sounds like replacing O2 sensor will make it happy. engine computer is having a hard time controlling lean/ rich fuel mix because sensor is slow to register changes, needs to have response time in milliseconds or engine computer can't operate properly. O2 sensors do wear out, normal service item. hope that helps

Posted on Jun 17, 2009

  • 160 Answers

SOURCE: 02 Kia Sportage sluggish and engine light came on

sounds like a timing belt to me but i can not tell i need more info

Posted on Nov 27, 2008

  • 72 Answers

SOURCE: Does the 2001 Kia Sportage have a fuel sending module?

Take it back and DEMAND that they restore your car to the previous fuel mileage....NO CHARGE! If they balk take them to small claims (it's cheap and you'll win) because they are trying to sell you a "pig in a polke"! I'm a retired Journeyman mechanic....and what they are telling you is the biggest sack 'o you 'no what.....Iever heard. Good luck to you.

Posted on May 28, 2009

  • 55 Answers

SOURCE: i have 05 kia rio and its idling ruff and code is

How many miles, and have you had the fuel filter changed at all?

It could also be an O2 sensor. Try removing them. Tip should be a gray/tan color. If its green you have a blown head gasket.

Posted on Sep 12, 2009

Testimonial: "thanx 4 the help i change the fuel filter and car runs much better now but code remain the same but idleling is80% better now.God bless u. "

  • 17 Answers

SOURCE: 2002 kia sportage with P0171 diag code. Fuel

you have a vacum leak either in a hose or a vacum cap, check all hoses and caps, replace questionable peices

Posted on Dec 13, 2009

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1 Answer

My 2003 kia sedona won't pass emissions the codes are p0320 p0431. Help please

code p 0320 refers to crankshaft position(CKP) sensor /engine speed ( RPM) sensor ---circuit malfunction===causes --wiring---CKP/RPM sensor---ECM
code p 04310 refers to warm up catalytic converter, bank 2--efficiency below threshold===causes ---cat converter---wiring---HO2S 2
As it is not passing the smog test I would be replacing the HO2S sensor ( manifold or before the cat on bank 2 of the engine ) or more likely a failed cat converter
you may have had the P 0320 code for a long time and have not noticed a drop in performance but as cat converters have a lot to do with smog control , that is the area I would advise checking first

Jan 16, 2016 | Kia Cars & Trucks

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What causes too much co in youre exhuast

If you have a fuel sensor check that out. Could need replacing. Also when was the last time you changed the air cleaner filter. A dirty air filter will cause that as well as it can't breath properly. Just some ideas.

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How to replace the O2 sensor in a 2005 PT Cruiser?

your upstream o2 sensor is located behind motor and manifold and need an o2 senor socket and racket plus extension to remove and then your downstream 02 sensor is on the side of Cat convertor (drive side)and same process to remove and replace

Jul 30, 2013 | 2005 Chrysler PT Cruiser

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2003 kia sedona lx didnt pass smog code p0421

P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1)
Can Clip Renault

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1999 Kia Sportage O2 sensor replaced but still reading error.

O2 or HO2S
that is the question
O2 sensors are after the cat converter/s where as HO2S sensors are in the exhaust manifold before the cat converter/s and report exhaust gas composition to the ECM so that the air /fuel mixture can be adjusted
May be you replace the wrong sensors

Jan 06, 2018 | 1999 Kia Sportage

1 Answer

Why is my exhaust manifold glowing red

Timing belt not on correctly

Now your new cat is most likely ruined,
as well as oxygen sensors from the heat

Dec 04, 2012 | 2001 Kia Sportage

1 Answer

Trying to get ready to smog ,already changed thermostat what would cause it to run too cool?Mechanic states that there is not enough heat to burn gas efficiently causing a plugged cat converter. What can I...

everyone in americia is searchin for a way to ride cooler
and here your looking for a way to run hotter
thats a first

what does your "mechanic" say was the fault codes in memory
after properly wiping memory for a fresh start
and a short drive ?

I thought it was only gm products that required a map sensor cal

but maybe kia does too

map= Manifold Absolute Pressure this little box measures the pressure in your
manifold the place where the air goes into cylinders when not properly calibrated
or malfunctioning
they lie to the eec and it adds too much fuel and richen up the gas the injectors shoot into cylinders
and drive down cylinder temps and you fail the smog test too much Hydrocarbons (gas)
but usually the O2 sensor in tailpipe will counter this I wonder why not in this case ?

Jul 15, 2009 | 2001 Kia Sportage

1 Answer

Our 1999 Kia Sportage will stall when you are coming to a stop.

Try replacing the sensor at the outake manifold. it looks like an O2 sensor. It detects gases that are coming out of the catalytic converter. it is sometimes mounted on the pipe or the back side of the catalytic.

Feb 20, 2009 | 1999 Kia Sportage

1 Answer

Oxygen sensor

There are 2 sensor' near the exhust manifold and the other after the cat converter. You need to know which one is bad first.

Aug 11, 2008 | 1998 Kia Sephia

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