My 2004 kia Sedona was park and idling for 5mins and all of sudden the temperature gauge just went all the way to the overheat red mark at the top of the gauge. I got out open the hood, got the water hose and sprayed water on the radiator and condensors to try to cool off the engine. However, this did not work. The temp. gauge was still on the overheating level. I got a wet rag and did the unbelievable of openning the radiator cap slowly and still watering the radiator and when the pressure was released, I open the cap and put the hose in the radiator to get water to go into the radiator. After 5mins, the temp needle would not come down. I turned off the engine, while water was still running, I started the engine and the needle was at the half mark. I drove home and the tempature gauge never when up pass the half way mark.
Your thermostat probably stuck closed.when you cooled it down,it opened again.change the thermostat.
Do you change coolant every 24,000 miles?
My first take is a stuck thermostat.
Radiator cap can also be at fault.
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I would check the color for the oil first to rule out blowing head gasket.
If the oil look clear then change the thermostat and gasket.
50/50 coolant/water mix should do the job for most area.
Change radiator cap if it's still over-heating.
Professional use a pressure tester to ensure the system can hold ~16 psi in the system.
DO NOT drive the van with a stuck thermostat.
Change it or get it check out.
ON CERTAIN MINI VANS, FREEZING CONDITIONS CAN CAUSE WATER ON THE THROTTLE CABLE TO FREEZE DURING NORMAL OPERATION. RESISTANCE TO MOVEMENT OF THE THROTTLE CABLE CAN OCCUR WHEN THE DRIVER LIFTS THEIR FOOT OFF OF THE GAS PEDAL.
Consequence: THIS CAN CAUSE THE CABLE TO STICK, THUS PREVENTING THE ENGINE FROM RETURNING TO IDLE AND CAUSING THE VEHICLE TO MAINTAIN SPEED OR ACCELERATE. SUCH AN EVENT CAN OCCUR WITHOUT WARNING AND COULD CAUSE A CRASH.
Remedy: DEALERS WILL MODIFY A PROTECTIVE SLEEVE AROUND THE THROTTLE CABLE. THE RECALL BEGAN ON AUGUST 15, 2005. OWNERS MAY CONTACT KIA AT 1-800-333-4542.
Notes: KIA RECALL NO. SC-051. CUSTOMERS MAY ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION¿S VEHICLE SAFETY HOTLINE AT 1-888-327-4236; (TTY: 1-800-424-9153); OR GO TO HTTP://WWW.SAFERCAR.GOV.
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