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Resources for the Repair and Maintenance of your 2004 Kia Optima

2004 Kia Optima

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2004 Kia Optima Problems

Electrical & Lights -- Verified

A faulty door latch assembly may cause one or both front doors to be difficult to open. Replacing the worn latch will commonly correct this problem.

Drive Train -- Verified

Reprogramming the transmission control module with the latest Kia transmission software may fix abnormalities in the automatic transmission and erroneous transmission-related Check Engine Light illumination. Software updates are commonly most effective on newer vehicles. Higher mileage vehicles may exhibit a similar symptom caused by a component failure. However, whenever major transmission repairs are performed the transmission software shoul...

Exhaust & Emissions -- Verified

Check Engine Light illumination—combined with a lack of power or a stumble on acceleration—may be caused by the throttle position switch (TPS). Kia released an improved part which should correct this concern.

Heating & Air Conditioning -- Verified

A defective AC compressor clutch assembly can cause excessive noise or vibration when the air conditioning is on. Improved parts are available. Replacing the faulty clutch assembly does not necessitate replacement of the complete AC compressor or evacuation and recharging of the air conditioning system.

Engine -- Verified

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Timing belts can break prematurely and cause serious engine damage. When replacing a broken timing belt, the crankshaft position sensor should also be replaced as it most likely has suffered damage as well.

2004 Kia Optima Recalls (Recent)

Body, Interior & Misc., June 16, 2009

Summary: KIA MOTORS CORPORATION (KMC) IS RECALLING 36,538 MODEL YEAR 2001-2004 OPTIMA VEHICLES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN, AND THE DISTRICT OF COLUMBIA. ROAD SALT APPLIED IN THESE STATES DURING THE WINTER MONTHS MAY RESULT IN PROGRESSIVE, INTERNAL CORROSION OF THE FRONT SUBFRAME. OVER TIME, SUCH SUBFRAME CORROSION NEAR THE CONNECTION TO THE LOWER CONTROL ARM CAN LEAD TO WHEEL MISALIGNMENT AND/OR OTHER NOTICEABLE STRESS IN STEERING, OR ACCELERATED ABNORMAL TIRE WEAR.

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2004 Kia Optima Questions and Answers

1970 cuda man, 2004 Kia Optima, Austin, MN

no engine lights, kills just idleing, hesitation under load

ladykat34, 2004 Kia Optima, V6, Tampa, FL

I do not have the owner's manual for my Optima and do not know what is the best oil weight for my car?

NSX, 2004 Kia Optima, V6, Corvallis, OR

What are people's general opinions about the reliability of the 2004 Optima LX V-6, especially the transmission and engine?

Are the general maintenance and repair costs expensive?

Is the...

jasmine_Freeborn, 2004 Kia Optima, V6, Zephyrhills, FL

Engine will turn over but car will not start. Not sure where the fuel filter is loacted. Found 3 filters, one in driver rear of car, and one under hood connected to possible fuel line to engine, an...

smyates, 2004 Kia Optima, 2.4L 4 Cylinder, Memphis, TN

I just bought my KIA in April due to the transmission problem with my Saturn. The car is great so far but it makes a wierd squeaking noise underneath when I am driving every once in a while. What c...

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2004 Kia Optima Reviews

I paid off my 2004 Kia Optima Lx...I sure regret not trading this piece of junk in. My problems with this car is once in a while my key won't open my trunk...the whole passenger side of the car front & back the electrical doesn't work ..this pile of junk is a bad car period. Anyone interested in buying a Kia vehicle better think again....

I have the 6 cyl model. The car now has 100,000 miles.
No troubles yet. The paint on the door handles has come off. No oil leaks, no brake job yet, still runs well.

I need to remove alternator . how do I get it out from under the car?

not a bad car just real hard on rotors and pads.

Decent car, a little anemic coming up the hill to my house. If I buy another I'll definately get the six cylinder, not the four.

It does handle well, but you need studded tires in the winter.

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