My car is overheating

Asked by Aug 30, 2015 at 02:52 PM about the 2012 Kia Optima LX

Question type: Maintenance & Repair

replaced the radiator, the radiator cap, thermostat. Everytime the car heats up the coolant would boil and push the coolant out from the container. We checked the water pump and fans, everything ok...When the car is started, it blows out cool air, and the radiator hose on the right side is really hot. Seems its not curculating....we dont know what else it the problem? The car is 2012 Kia Optima LX

8 Answers

2,215

head gasket. how soon after starting it from cold does it blow coolant out of the radiator? take the cap off and top the fluid off and start the car see if it pushes the fluid out right away if so look at head gasket or head being warped. other thing you can do is pull the cap off the radiator and with out running it give it a sniff see if you smell exhaust if not start it let it run for a cupple secounds and then smell it again.

1 of 1 people found this helpful.

its cold right away...so as soon as the car is started. what type of fluid? i been using the 50/50 Prestone...i think its the wrong one. it doesnt push the fluid out, takes about 30 minutes to.

2,215

ok the 50/50 is fine but you might want to call a parts house and see if it should be using a dexcool rather then conventional antifreeze. if it takes 30 min for this to happen what I want you to do is fill the radiator up put the cap on it start it and run it till it gets warm check to see if you can feel it if the bottom raddiator hose is getting warm. thinking you might have a thermostat that is bad and not allowing circulation. this would also cause the heater hoses to stay cold

2,215

if it starts getting close to the hot line shut it down see if the hose on the bottom is still cool it should be hot by now and well as hot as the top one.

if everything dont go the way it should, what would be the problem? If it were the heads, then how does that get placed.?

930

if there is no circulation of the coolant, you could have a bad temp sensor and/or a bad water pump. The water pump impeller can be damaged to not create enough flow thru the engine.

10

sounds like you have air trapped in your heater matrix, remove radiator cap and fill with coolant start engine and run till hot with heater lever in hot position squeeze water hoses that come from bulkhead too engine block, you should see air come out through top of radiator, when all the air has finished switch on heater blower to check heater is hot this should cure your fault

1 of 1 people found this helpful.
20

I have a 2004 Kia sorento ex and we changed all radiator new thermostat. New radiator cap. New radiator bushing new sensors. But still boiling the antifreeze thru the overflow fill box? No water in oil and no engine knock hoses are hot and so. Is radiator. Put half a gallon of antifreeze and it seems to not be going into the radiator what could be my issue?? Anyone? I'm leaning towards water pump more then heads but I'm not sure. I know I'll never buy another Kia ever

2 of 2 people found this helpful.

Your Answer

Add photo

Related Questions

  • My car is overheating 8 answers

    replaced the radiator, the radiator cap, thermostat. Everytime the car heats up the coolant would boil and push the coolant out from the container. We checked the water pump and fans, everything ok......

    2012 Kia Optima LX

    -

    Maintenance & Repair

  • car overheating

    my 2005 kia optima has started overheating after driving it a good distance. it usually doesn't get all the way into the red and turning the A/C off and the heat on will make it go back down but drivi...

    2005 Kia Optima

    -

    Maintenance & Repair

  • Why is my 2007 Kia Optima wheel is locked and car won't start ? 3 answers

    I've tried using my left hand to pull down on the looser side of the wheel while turning the ignition, I've tried spraying DW40 into key hole while turning it, I've also tried bamming the key whilst...

    2006 Kia Optima

    -

    Maintenance & Repair

  • my 2013 kia optima temperature is rising when the a/c is on and the car idles 3 answers

    My car's temperature is rising when the car sits at a light or when it idles. This only happens when the A/C is running

    2013 Kia Optima EX

    -

    Maintenance & Repair

  • car is hot 1 answer

    Car is running hot what can be wrong

    2003 Kia Optima SE V6

    -

    Maintenance & Repair

Optima

Looking for a Used Optima in your area?

CarGurus has 28,906 nationwide Optima listings starting at $1,750.

ZIP:

Search Kia Optima Questions

Kia Optima Experts

#1 Tom Demyan
Tom Demyan
Reputation 980
#2 kc07kia
kc07kia
Reputation 420
#3 James Warner
James Warner
Reputation 400
View All

Related Models For Sale

Used Hyundai Sonata
856 Great Deals out of 47,997 listings starting at $1,195
Used Honda Accord
1,054 Great Deals out of 68,301 listings starting at $1,000
Used Nissan Altima
1,283 Great Deals out of 75,808 listings starting at $1,695
Used Toyota Camry
1,247 Great Deals out of 84,501 listings starting at $750
Used Ford Fusion
1,292 Great Deals out of 76,500 listings starting at $1,500
Used Honda Civic
883 Great Deals out of 84,978 listings starting at $750
Used Chevrolet Malibu
1,168 Great Deals out of 79,727 listings starting at $2,500
Used Nissan Maxima
331 Great Deals out of 24,430 listings starting at $1,999
Used Hyundai Elantra
646 Great Deals out of 41,705 listings starting at $900
Used Dodge Charger
525 Great Deals out of 28,799 listings starting at $2,500
Used Mazda MAZDA6
194 Great Deals out of 14,729 listings starting at $1,395
Used Kia Forte
175 Great Deals out of 21,085 listings starting at $3,000
Used Kia Sorento
479 Great Deals out of 30,596 listings starting at $1,788
Used Chevrolet Impala
602 Great Deals out of 35,644 listings starting at $899
Used Toyota Corolla
1,004 Great Deals out of 69,995 listings starting at $1,800

Used Cars For Sale

2017 Kia Optima LX For Sale
7,737 listings starting at $12,890
2016 Kia Optima LX For Sale
28 Great Deals out of 2,055 listings starting at $10,990
2015 Kia Optima LX For Sale
94 Great Deals out of 2,659 listings starting at $8,950
2014 Kia Optima LX For Sale
63 Great Deals out of 1,233 listings starting at $6,589
2013 Kia Optima LX For Sale
40 Great Deals out of 891 listings starting at $5,291

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.