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

2,105

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 out of 1 people think this is 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.

2,105

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

2,105

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.?

880

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 out of 1 people think this is helpful.

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

Your Answer

Add photo

Related Questions

Optima

Looking for a Used Optima in your area?

CarGurus has 31,036 nationwide Optima listings starting at $2,995.

ZIP:

Search Kia Optima Questions

Kia Optima Experts

#1 Tom Demyan
Tom Demyan
Reputation 960
#2 kc07kia
kc07kia
Reputation 400
#3 James Warner
James Warner
Reputation 370
View All

Related Models For Sale

Used Hyundai Sonata
619 Great Deals out of 52,211 listings starting at $1,495
Used Honda Accord
769 Great Deals out of 88,118 listings starting at $1,150
Used Nissan Altima
894 Great Deals out of 80,544 listings starting at $1,800
Used Toyota Camry
837 Great Deals out of 90,969 listings starting at $850
Used Ford Fusion
1,045 Great Deals out of 85,453 listings starting at $1,900
Used Chevrolet Malibu
864 Great Deals out of 81,221 listings starting at $995
Used Nissan Maxima
280 Great Deals out of 26,377 listings starting at $1,300
Used Honda Civic
514 Great Deals out of 89,870 listings starting at $1,299
Used Dodge Charger
282 Great Deals out of 27,348 listings starting at $2,250
Used Hyundai Elantra
465 Great Deals out of 52,956 listings starting at $1,995
Used Mazda MAZDA6
107 Great Deals out of 15,987 listings starting at $1,500
Used Chevrolet Impala
523 Great Deals out of 29,877 listings starting at $799
Used Kia Forte
155 Great Deals out of 18,883 listings starting at $2,988
Used Toyota Corolla
696 Great Deals out of 73,140 listings starting at $1,950
Used Kia Sorento
409 Great Deals out of 33,265 listings starting at $1,495

Used Cars For Sale

2017 Kia Optima LX For Sale
7,232 listings starting at $15,223
2016 Kia Optima LX For Sale
47 Great Deals out of 3,791 listings starting at $11,890
2015 Kia Optima LX For Sale
65 Great Deals out of 2,685 listings starting at $8,950
2014 Kia Optima LX For Sale
40 Great Deals out of 1,392 listings starting at $8,280
2013 Kia Optima LX For Sale
27 Great Deals out of 960 listings starting at $6,485