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It could be low, it could be not circulating due to a faulty coolant pump, it could be a bad pressure cap, it could be a head gasket allowing coolant into the combustion or oil chambers, it could be a bad temperature sensor. If you have an analog gauge at the instrument cluster does it aso indicate hot/
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Obviously it's temperature gauge light. Check for coolant level first. Then check for coolant leak. If coolant is leaking out of your car, the lower coolant levels in your engine will cause it to overheat. If you have your heater on and it starts blowing hot air instead of cool, your engine is low on coolant. This will cause to flash a warning light on your car's dashboard.
If the coolant level is the problem, the engine would be getting hot. If it is getting hot, add coolant and check for leaks. Use your owners manual maintenance chapter.
if the engine is not getting hot, the thermostat is stuck open. If your husband cannot find the thermostat by himself, I recommend you go to a shop. You have to be a good mechanic to replace a thermostat properly.
First, you need to check your engine coolant level. If the level is low, the first thing to quit working is the heater. And of course if the engine is low on coolant it will overheat.
If the coolant is low then you need to check for the source of the leak, like a bad water pump, leaking hose or clamp, thermostat gasket, or just about any other gasket that seal off the cooling system.
Don't operate the vihicle if it is low on coolant, this can cause hot-spots inside the engine and can cause damage. Top it off with coolant, start it up and check for leaks.
Let us know what you find so we can be of further assistance.
You may have a faulty radiator blower motor. If the blower blows weak it will surely be not enough to make the engine cooled down. One good reason the water boils on the bottle. Another issue can be a clogged radiator and a faulty water pump. These can make the engine hot too when faulty. Please give enough attention on the possible causes to prevent severe damage to the truck.
Hope this helps and thank you for using FixYa! Have a good one!
The gauge on the dash is not accurate at all, you can get a obd live data monitor or you can test the coolant with the engine running and use a reliable thermometer, ( you take the cap off the radiator and run the engine till it gets hot. You also need to check and see if the thermostat is stuck closed.
250 DEGREES ENGINE GETTING TOO HOT.SOUND LIKE CLUTCH FAN FREEWHEEL.IF CLUTCH FAN DONT LOCK IN OR HAVE RESISTANCE TURNING BY HAND WHEN ENGINE HOT.FAN CLUTCH IS BAD.IF FAN CLUTCH OKAY COOLANT LEVEL CORRECT.I WOULD CHANGE THERMOSTAT FLUSH OUT ENGINE AND RADIATOR.IF ENGINE TEMPERATURE STILL READS 250 DEGREES OVER FLOW JUG OR RESERVOIR NOT BOILING OVER THE COOLANT TEMPERATURE SENSOR FAULTY.
Add Coolant to spherical reservoir at right rear of engine compartment as viewed from front. If it is low the coolant gauge flashing light will warn you of a low condition.
Is the radiator clean and flowing coolant? Why was the water pump replaced? What was the condition of the old coolant? If the engine is HOT the air coming through the radiator should also be HOT, if its not, the radiator has blockage and will need to be removed and cleaned.
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