My 1999 chevy malibu water pump leaks what should i do

Look for a broken heater hose.

If its not from the water pump or hose it is most likely from a rusted out welch plug , This happens if the coolant is not replaced when needed . To do a good repair replace them all . For a bit extra money find brass plugs, end of problem . replace with good coolant.

there are lines that go to your transmission to the side of the radiator maybe one of the are bad

You have a blockage somewhere in the system not allowing the coolant to circulate. Also the water pump could be bad. Could be a bad water pump

Their is no radiator cap that goes directly into radiator. if you do plan on putting barr's leak in it just put it in the coolent tank on the passenger side that is the only way.

Probably a blown head gasket. Not an easy fix and not for the faint of heart.

Sounds like you need to disconnect the Radiators' electric fans and have them tested. You absolutely must have them working, or your car will overheat. Check to see if the Temperature guage is working.

You need to go to a good autoparts store and have them test the fans and charge and test your battery. You may need some sensors to activate the Radiator fans, but you could be running the battery down with shorted cooling fans.

There are also Relays which work with the Radiator fans. The overflow will stabilize once the water gets into where it belongs. Make sure your Thermostat is not clogged with the sealer.

if you dont have a hole in your radiator hose then you have a bad water pump. when they go bad fluid leaks out the front of your motor. best of luck to you.

Check the lower radiator hoses for a leak and the lower part of the radiator itself for a leak. Also, check your engine oil level and make sure you don't have water in your engine oil. If you do, you have most likely lost one of the timing chain guides and the chain has worn a hole in the front cover of the engine or the block has cracked. Another possible problem location could be the water pump leaking at the forward seal.

Due to the complexity of the newer cars on the raod today!! what you are experiencing is Normal!!! since the coolant systems on the newer cars run at such a higher pressure and a high Rpm the reserve tank which has it's on drain hose for excessive overflow from the radiator allows the extra high pressure release from the radiator to back flow to the reserve tank and then out the reserve tank overflow hose on to the raod