I keep having to add water to. Doesn't do anything when it's sitting up. But after you drive it straight for about 25 minutes. Time to add some more water. I figure it's the water pump. It's not leaking anywhere so it has to be a failing water pump. Oil still looks good, no smoking. AC and heater blows fine. Just runs hot after a while. I need another opinion. Its the 4 cylinder also. And yes it does be steaming. Tired of having to add water everyday.
The water pump seal will go bad if it isn't already because you are adding plain water to the cooling system! Antifreeze has a rust inhibitor and a lubricant in it and if you don't have the correct strength mix the inside of the block rusts and then the heater core and the radiator get plugged up resulting in hundreds of dollars in repairs. The water pump if leaking will drip on the passenger side from under the timing belt cover if you let the motor idle for 5 to 10 minutes. Look for the drips on the inside of the RF tire. If the water pump is leaking the timing belt will jump and bend all the valves.
Because it doesn't drip when it's just sitting shows you that it doesn't leak untill it's hot pressurized. So, drive it until the temp is 'normal', then stop but leave the engine running see if you can find the drip with the engine hot. Also, the water pump is not a 'normal' source for lost coolant - More likely a lose hose clamp....
Forget the check this and try that stuff. You need a RADIATOR SHOP the radiator is plugged and you can do nothing to clean it. Don't waste time on flushing as it is a waste. Water pumps have mechanical seals and require no lubrication and anti freeze contains no lubrication material. Plain water will not affect the pump. Never replace any part 'till you KNOW the problem
