Leaking antifreeze buick century 1998

Is it leaking out the weep hole or around the mounting area from the gasket between the block and the pump

Water pump , when they start going bad there is a weep hole on the back side of the pump that leaks .

Whenever I see a system which is leaking from more than one or two places, I do a head gasket check because that tells me that the system is experiencing above normal pressures. the wet floor is a heater core. whether it's a water pump or some other thing near it only you can tell. Actually it rarely happens, but the wet floor could be the hose where it meets the heater core at the firewall; again, only you will be able to tell the difference. if the hose connection looks dry, assume that it is the core itself.

Best way and safe to check coolant leak. Use or you can rent one from
auto part store. "Radiator pump presure tester"
Let the engine cold down and hook it to radiator filler neck make sure it's good tight then pum untill you feel some presure, then it time to check for leak. You'll be able to see water comes out.

Mai

if you have the cooling system pressure tested this will show where the leak is coming from as there are frost pulgs and intake/headgaskets and other things that could be leaking.but pressure testing is the way to find what is leaking for sure.the rad may be full as it will draw water from the overflow bottle until its empty.if you didn`t have this problem until after the plugs were changed then it could be a hose that is leaking that was leaned on or moved to much.again pressure testing the system will show were its leaking.the whining noise could be antifreeze that has gotten on something causing the noise.

flow the hose from your ratater to your water pump undo 2 bolts clean and remove the old gasket replace with now one put new thermostat in rebolt not to tight that you will crake it and check flluids and make sure it not leaking ...

it could be a loos hose clip or the water pump, there is a gasket behind the water pump this could be leaking as well there is a quick fix you could try if its a clip or gasket leaking it should stop the leak,but it wont stop a water pump leaking ,,,,,,,,,,,
get some "rad seal" and tip it into the rad,,,not the header tank it go's right into the rad then top it up with water and run up the engine itll its hot after a short time the leak should stop,,fords put it in all there new cars and vans that come out there fatctorise,, so if its good for them to use it,, it must work?

you should check the water pump polly u can rotate it back an forth if it easly goes change it , or you can hear a nois sound comming from the water pump

try adding it via the reservoir. make sure you have a 50/50 mix of water and antifreeze. If you want to cheat, cheat on the side of more antifreeze than water. Look for a leak in the hoses and water pump to find out if she has a larger problem that is causing the loss of coolant. look for drips under the car.

Since the fan is electrically operated it is not the problem.it seems like more of a waterflow problem:the faster the engine turns-the more the water pump turns.i am only guessing but it seems like it could be low on antifreeze or your water pump is failing..good luck