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

7 Answers

1,945

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.

1,945

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

1,945

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.?

790

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.

Your Answer

Add photo

Related Questions

Optima

Looking for a Used Optima in your area?

CarGurus has 29,090 nationwide Optima listings starting at $2,000.

ZIP:

Search Kia Optima Questions

Kia Optima Experts

#1 Tom Demyan
Tom Demyan
Reputation 900
#2 kc07kia
kc07kia
Reputation 380
#3 James Warner
James Warner
Reputation 360
View All

Related Models For Sale

Used Hyundai Sonata
890 Great Deals out of 48,408 listings starting at $1,000
Used Honda Accord
1,078 Great Deals out of 74,905 listings starting at $969
Used Nissan Altima
972 Great Deals out of 82,392 listings starting at $1,795
Used Toyota Camry
1,291 Great Deals out of 96,929 listings starting at $999
Used Ford Fusion
1,129 Great Deals out of 71,257 listings starting at $1,295
Used Honda Civic
1,040 Great Deals out of 62,661 listings starting at $1,500
Used Chevrolet Malibu
1,012 Great Deals out of 77,147 listings starting at $2,795
Used Nissan Maxima
366 Great Deals out of 24,126 listings starting at $1,895
Used Dodge Charger
494 Great Deals out of 27,818 listings starting at $2,343
Used Hyundai Elantra
807 Great Deals out of 52,044 listings starting at $1,799
Used Kia Sorento
533 Great Deals out of 32,892 listings starting at $2,950
Used Mazda MAZDA6
190 Great Deals out of 13,901 listings starting at $1,995
Used Kia Forte
218 Great Deals out of 15,738 listings starting at $3,695
Used Kia Optima Hybrid
38 Great Deals out of 2,549 listings starting at $7,753
Used Chevrolet Impala
845 Great Deals out of 34,367 listings starting at $1,800

Used Cars For Sale

2016 Kia Optima LX For Sale
23 Great Deals out of 9,134 listings starting at $13,269
2015 Kia Optima LX For Sale
77 Great Deals out of 2,572 listings starting at $9,941
2014 Kia Optima LX For Sale
38 Great Deals out of 1,074 listings starting at $8,695
2013 Kia Optima LX For Sale
67 Great Deals out of 1,560 listings starting at $7,500
2012 Kia Optima LX For Sale
20 Great Deals out of 358 listings starting at $6,476