I keep getting my add coolant light constantly going off, but now the light went out but the buzzing got real loud like the little buzzer speaker was going to blow. I was having a problem with coolant loss but i put a new water pump and radiator cap in it doesn't seem to be overheating but i don't trust my stock gauge. I am not seeing any visual leaks and the coolant is in the neck but sometimes i have to add like a pint to fill it back up could i have an air bubble. Could it be a sensor, a thermostat, a radiator could you please help thanks greatly appreciated.

 

Have you properly bled the cooling system of air? Fill it up until you can see coolant in the filler neck and run the engine with the heater fully open and filler cap removed. Let it warm right up until the thermostat opens (the upper radiator will get hot) and there are no more bubbles appearing, then top it up and replace the cap.

 

check for shorts on the coolant sensor wire if you're not low on coolant..

 

well what is your radiator overflow bottle doing. if it is filing up, and almost starting to overfill, you may have a leak in the hose to the overflow bottle, if there is a lil hole in it, it will allow the coolant to travel to the bottle but not back into the radiator, also check for a blown coolant seal in the motor. take the radator cap off and crank the engine over, if you see coolant coming out of the radiator you have a poped coolant seal.