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In systems that do not have a radiator cap, the coolant is drained by the radiator drain plug. It is filled by adding coolant to the system through the overflow bottle.
If the radiator is cracked then the vehicle has ran dry on coolant. This would cause the radiator to crack if there wasn't any coolant.
there is no real radiator cap. On the left side of engine compartment there is a coolant jug. This where you would add coolant to radiator.
broken radiator
It would be on the coolant reservoir.
You would remove it from underneath. There is a cross member which holds the bottom of the radiator and you remove this, after unhooking all the lines (trans coolant and engine coolant) and draining the radiator.
you would lose all your coolant
An overflow container prevents coolant loss. As coolant heats it expands. Without the tank, excess coolant would be forced from the radiator and be dumped on the ground. As coolant cools it is drawn back into the radiator so it always stays full.
I assume you want to change out the water pump and would like to know if you can do it without draining the radiator. You will lose approximately all the coolant in the radiator reservoir when you remove the radiator hose from the water pump. If the coolant is in good, clean condition, it might be wise to drain the radiator into a container and re-use the coolant.
The coolant level sensor is faulty.
Np, because most of your coolant is contained in the engine block. So when you drain your coolant from your radiator, most of the coolant will *remain* in the block.
Air flow through radiator restricted with debris. Coolant flow through inside of radiator restricted with debris. Low on coolant. Faulty thermostat. Coolant fans inop.