Once the engine reaches it regular running temperature the engine runs faster then normal. If I am stuck in traffic my engine will overheat and loose the coolant.I have changed the thermostat, cleaned the radiator by washing it with a garden hose, and flushing out the cooling system. These things have not solved the problem, antone have an answer ?
Could be anywhere from coolant temp sensor, throttle pos sensor, idle speed solenoid.
SOURCE: 2001 Kia Optima over heating
I figured this out and fixed it on my 2001 Optima. Mine was an electrical problem, not an overheating problem. The problem shows up when there is a heavier than normal load on the electrical system. For most of us, this is when the air conditioner is running full-blast on a hot summer day. However, it was also occuring when I ran the heater full blast. The heater running full-blast should have lowered the temperature, not raise it. So I tested the coolant temp while the gauge was showing it overheating. The coolant temp was not increasing, but the gauge showed that it was. It is caused by a bad ground connection. Another test you can do to see if your problem is the same as mine is this. As soon as the engine is showing overheating, pull over, park the car and turn off the engine. Immediately start the engine again and see what the temp gauge shows. If it still shows hot, you'll know you've really got overheating coolant. If it goes back to normal range, you'll know it's just a bad ground connection. Turning off the engine eliminates the resistance in the electrical system that has beeen building up and causing an erroneous high temp reading.
To fix: Either find and clean ground connections throughout the vehicle until it fixes it, or do what I did. A mechanic at the Kia dealer showed me this. I ran a new wire from an empty bolt-hole on the top of the engine to a bolt into the frame behind the engine. I only added a 6 inch wire and a new bolt into the top of the engine. The bolt into the frame was already there, so I just removed it, put the wire under it, and replaced the bolt. It created a redundant ground that prevented the build-up of resistance that caused the erroneous temp reading. It was a 5 minute fix and it has never done it again. Kia knows about this problem and they put out a post to their shops on how to fix it.
SOURCE: '99 Kia Sephia overheats and coolant boils out...
rplace coolant temp sensor,and bleed all air out of coolant system ,fan relay checks and fuses check is good,,do fans run with ac on? if they do ,fuse and relay most likely ok but check relays any way
SOURCE: 2000 kia sportage trouble code po171 once in
I have 2005 Kia Sportage with a check engine light. No other symptoms. I was told by Kia and Local mechanic that it is the fuel injectors. Error Code states that Fuel injectors are running lean. Put Master airflow- no change. Ran engine test with propane to run rich and trim never changed from 15. Car runs great. Kia dealer said that this is because we use Ethel in gas that it effects the alumium fuel rail delivery to the injectors and that it is necessary to change all of them .Kia Dealer wants $1,000.00 deposit to place order 6 fuel injectors from Kia. (Has anyone heard of that?)Also put fuel injector cleaner in tank.Does anyone have any suggestions before I spend over $1,000.00 to replace all 6 injectors or possible idea of what could be wrong?
SOURCE: where is thermostat on 2000 kia sephia
Follow the upper radiator hose from the radiator to the engine block. Where it connects to the engine is where you'll find the thermostat. It's under a housing...should be two or three bolts holding the housing down. Don't forget to replace the gasket.
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