This may not be the answer you are looking for. This will help you change the thermostat. If you want to change the thermostatic fan sensor some of the steps are the same but I do not know where it is located on the engine. 1: Go to an auto parts store and buy a new thermostat and gasket for your car. 2: Bring these things home or to a place you can work on the car safely for at least 90 minutes. 3: Stop the engine, and let it cool down. ( I found this out the hard way ) 4: Open the hood of the car. 5: Remove the radiator cap. 6: The top radiator hose, should be on the right side, leads to the thermostat housing. 7: On the bottom of the radiator is a drain cock, open this, using a flat container that will hold at least 3 quarts and drain the anti freeze into the container. 8: There are two clamps holding the hose in place,one at the radiator one at the housing undo these clamps enough to be able to remove the hose. 9: There are two bolts holding the thermostat housing in place, undo these with a wrench or socket 1/2 inch or 9/16 I think. 10: Carefully remove the housing, it may be stuck to the engine and be a little difficult to remove. 11: The old thermostat my come up with the housing, just remember how it looks as the new one has to go back in the same way. 12: Clean the housing and engine of any old gasket parts, scraper and or sandpaper will do. 13: Install the new thermostat and gasket,put a film of oil or grease on the gasket so it doesn't stick. 14: Replace the thermostat housing and bolts, try to tighten the bolts evenly, do not use too much force or the housing will break ( hard way ) 15: With the clamps on the hose, put the hose back in place and tighten the clamps. 16: Tighten the drain cock on the bottom of the radiator. 17. If possible pour anti freeze back into your radiator, you may have to top up fluid anyway.
A bubble sounds from the engine usually indicates that the engine is seriously overheating. It is best to turn off the engine and call a mechanic. Adding antifreeze may help, but it is likely leaking somewhere.
Bubbling antifreeze in the coolant reservoir of a 1996 Dodge Neon can indicate overheating or the presence of air in the cooling system. It may also suggest a potential head gasket leak, allowing combustion gases to enter the cooling system. Additionally, a malfunctioning thermostat or water pump could be causing improper circulation, leading to localized boiling. It's important to address these issues promptly to prevent engine damage.
Wrong mixture make sure you have pre diluted/mixed coolant/antifreeze.
Sounds like a blown head gasket
Overheating or air trapped in cooling system.
Overheating. Have the cooling system checked.
You need to have a shop check your radiator cap, water pump, cooling fan and thermostat for proper function...the most common cause for over heating is a thermostat that has gone bad and is stuck closed not allowing the coolant to circulate and cool the engine.
For one, you probably have a leak, and also you probably have a clogged heater core.
It is probable that you have a blown cylinder head gasket. It's possible you need a new thermostat. Depends on where it is bubbling from. From the top of the engine? Cylinder head gasket. From the overflow on the coolant reservoir, thermostat.
Bubbling coolant in your 2000 Ford Expedition could indicate several issues, such as overheating, a blown head gasket, or air trapped in the cooling system. Overheating can cause coolant to boil and create bubbles, while a blown head gasket may allow combustion gases to enter the cooling system, leading to bubbling. Additionally, insufficient coolant levels or a malfunctioning thermostat can contribute to this problem. It's important to diagnose the issue promptly to prevent further engine damage.
1) Your engine is overheating and the coolant is boiling. Or 2) Exhaust is leaking into the coolant, probably through a bad head gasket or cracked head.
If it is coming from the radiator or the hoses this would mean your antifreeze is boiling in the lines. I would recommend first changing the thermostat and bleeding the air from the rad lines.