The thermostat has not opened yet.
there should be a pitcock on bottom of radiator to drain it. or take the bottom radiator hose with motor cold of course .
If both the top and bottom radiator hoses are cold, it is likely that the thermostat is stuck closed, preventing coolant from flowing through the radiator. This can result in poor engine cooling. Additionally, air trapped in the cooling system can also cause both hoses to remain cold. Purging the air and checking the thermostat would be recommended in this situation.
That means that the radiator is stoped up with trash and engine coolant is not flowing through the radiator.
Engines return hot coolant to the radiator through top hose, and cooled coolant goes back to the engine through the bottom hose, so a difference in temperature between the two would not be unusual. Assuming you have allowed the engine to come up to temperature and the bottom hose is stone cold, either the radiator or bottom hose is blocked, the water pump has failed or there is an air lock. A seized viscous coupling on a cooling fan or a permanently running electric fan can also make the radiator over-cool, but the bottom hose would feel slightly cooler than the top hose, not cold.
what if my top radiator hose is very hot and the bottom hose is cold,would that be a bad water pump?
I would suspect a clog in the radiator.
* With the engine cold remove the radiator cap * Move a large container under to catch the coolant as you drain it * Drain the radiator by opening the drain plug at the bottom on the left side
there may not be one if there is is it on the bottom side and if it is not you candrain it by removing the bottom rad hose The 1999 Pontiac Grand Am does not have a radiator drain valve. To drain the radiator, remove the lower radiator hose. The engine should be cold and the water fill cap removed for venting. I have a 2000 Pontiac Grand AM and radiator drain cock is located at the lower/front (not bottom) at the curbside of the radiator, you will need a hex key to back out petcock. .
On the bottom corner of the radiator is drain plug. With the engine cold. remove the top radiator cap and remove the bottom drain plug. Be sure to put a large pan underneath to collect the old fluid.
I can't say for sure where it is in your particular vehicle, but usually the are on the bottom right or bottom left side of the radiator. Some are hard to see and you have to feel it out. Just be sure to do it when the engine is cold.
It has not had time to go through the whole radiator
maybe the waters in a flask or has been next to radiator or maybe it came out of a cold tap