There is a possibility the serpentine belt tensioner bearing has gone bad causing it squeal. If it looks like it has any deformation, melted or displaced rubber, DO NOT run the engine any more. The top side or smooth side of the belt should be smooth with wear lines in it. You need to remove the upper plastic timing belt covers and inspect your timing belt. The water pump impeller is known to come loose on the shaft, causing it to either not spin or spin at such a low RPM that it can't pump enough coolant to keep the engine at normal temperature. If indeed this is the case, your timing belt will snap and you'll have a whole crate full of issues to deal with.īased on your post, it my estimated guess that the water pump has failed. There is a roller tensioner on the timing belt that sometimes are known to seize up. The squealing might be coming from timing belt, and that is serious business. After starting the car, does the mechanical fan turn? I'm guessing it does. This something you don't want to play around with and waste anytime diagnosing. If you get squealing on one of the belts, something is wrong. The other belt, (the timing belt) is underneath the plastic covers behind the serpentine belt. That drives the alternator, power steering pump, a/c, and the mechanical fan (fan on the drivers side of the radiator). The belt that is visible is the serpentine belt. This could be a serious malfunction where coolant is no longer circulating the engine (faulty coolant pump) or it could be an electrical wiring (check connections) or sensor fault (temperature sensor or level sensor) causing the coolant warning light to flash.Ok, The V6 has two belts on it. Flashing: If the engine coolant light is flashing, it means there’s a fault with the cooling system.An audible alert may also be heard depending on your vehicle. Illuminate steady: This means the engine coolant is too hot and the engine is overheating.The engine coolant light may illuminate steady on or it may flash: There’s a fault with the cooling system.The engine coolant fluid level is too low.The outside temperature is high and the air passing through the radiator is warm and not cooling the system sufficiently.This could be that the vehicle is towing or carrying a heavy load or that the vehicle is being driven fast with high engine speeds (RPM). This could be due to or a combination of: The red engine coolant warning light means that the coolant fluid is too hot and that the engine is overheating. If the vehicle is stationary, a radiator cooling fan comes on, pushing air through the radiator. When the vehicle is moving, air passes through the radiator fins that in turn, cools the coolant passing through the radiator. The engine coolant itself is kept cool due to passing through a radiator. Engine coolant does however begin to boil at around 106☌. This prevents the coolant from from freezing in most cold climates, therefore preventing engine damage.Īnother benefit of antifreeze is that is raises the boiling point to help prevent the fluid from evaporating it also means that the fluid will not boil at 100☌. Normal water freezes at 0☌, engine coolant freezes at -35☌. The benefits of using coolant over plain water this is that it lowers the freezing point of the liquid. When you pour 50 / 50 ration of antifreeze and water (or a pre-made solution) into your coolant reservoir, this mixture forms the coolant. The antifreeze solution itself is made up of Ethylene glycol or propylene glycol and distilled water. This water (or ‘coolant’) consists of a mixture of antifreeze and water. Car engines are kept cool by use of water that constantly circulates around the hot engine components.
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