Car keeps overheating. no leaks
There is no adjustment on the cooling fan. If the car overheats, there are only a few things it could be. First, with the engine off and cool, check if the radiator is full of coolant and it looks clean.
The most likely cause of overheating is a stuck thermostat. You will need to drain the coolant and replace the thermostat. You can locate it easily by following the top radiator hose to the housing on the engine. The thermostat is under this housing.
You could also have some kind of blockage on your radiator. If there is a lot of dirt in the fins, air cannot circulate and remove the heat. Use some compressed air to blow the fins clean.
i cant find where the coolant is going too,checked the oil and there r no signs of water in the oil,also cannot find a leak anywhere and the problem occurs evry couple weeks
temperature gauge works fine after it overheats the radiator is nearly dry and no signs of leaked coolant anywhere
Are you filling the radiator with water or water/anti-freeze? Water will boil off with no apparent leakage.
Are you filling the radiator with water or water/anti-freeze? Water will boil off with no apparent leakage.
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SOURCE: kia optima 2003 has an overheating problem
This is very vague and hard to diagnose without more detail. I have a hunch the the brakes "locking up" is a different problem than the engine overheating. To check the engine: Remove the radiator cap from the cold radiator. Be sure the radiator in almost topped off with 50/50 antifreeze & water. Start the car and let it idle until either you can turbulence in the radiator, or the engine is getting really hot. Is the water temp gauge working? You can keep an eye on it during the process. If you see turbulence then the thermostat is opening, and the water pump is pumping. The thermostat is fairly easy to replace. The water pump is lots of work. Usually the timing belt, tentioner, pulley, and accessory belt is changed at the same time as the water pump, because the labor costs more than the parts. Hopefully nobody ever put straight water into the radiator. It causes corrosion, and lots of related problems.
SOURCE: 2006 kia optima overheating, no
I would be looking at the radiator fans themselves, especially if the fans are open
framed motors. I had the same problem with an intermittent fan on a PT cruiser,
If your A/C doesn't seem to be working right at stop lights then the fans are
most likely not operating correctly since they assist the condensing coil when idling.
Second thing I would suspect is a thermostat which is stuck closed. (This will cause overheat).
Hope this is helpful.
2
Inspect
Belt
Incorrectly routed, adjusted, tensioned, missing, or worn water pump belt(s).
3
Inspect
Oil Pan Gasket - Performance
Ruptured, cracked or leaking radiator hose.
4
Inspect
Radiator Cap
Worn or damaged radiator cap
5
Inspect
Thermostat
Thermostat stuck closed
6
Inspect
Fan Blade
Broken, missing, or defective fan blade(s).
8
Inspect
Water Pump
Damaged, worn or leaking water pump.
9
Inspect
Intake Manifold Plenum - Perform
Leaking water pump gasket.
10
Inspect
Cooling Fan Control
Faulty cooling fan control or circuit.
11
Inspect
Cooling Fan Switch - Radiator
Faulty radiator cooling fan switch or circuit.
12
Inspect
Engine Temperature Sensor
Faulty engine temperature sensor or circuit.
13
Inspect
Temperature Switch
Damaged or faulty temperature switch or temperature switch circuit.
14
Inspect
Fan Clutch
Worn, loose or faulty fan clutch.
15
Inspect
Ported Vacuum Switch
Damaged, leaking, or faulty ported vacuum switch.
16
Inspect
Radiator
Obstructed radiator core or radiator cooling fins.
17
Inspect
Head Gasket - Performance
Head gasket leaking coolant into cylinders
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