Vaccum hose popping off when i give the car gas

SOURCE: 2000 expedition heat problem

first of all I would make sure the car has proper amount of coolant and you are right it is very possible you have an air pocket in the system also ask your self did you change the thermastat after you did the heater core when the car is cold make sure there is coolant at the cold mark on the reservior bottle because you might not have enough coolant then start the car and get it up to temp and if the coolant goes not go up to the hot mark when the car gets to temp you do not have enought coolant just keep adding coolant and you will see the bubble after the thermastat opens

SOURCE: code was P1443. I put

you need to have the computer reset to get the check engine light to shut off there is a list of error codes that has to be cleared from the computer so the check engin light will shut off but it wont hurt to drive with the light on for a while as long as you fixed the problem

SOURCE: car making loud humming noise from the air intake

the idle air bypass valve is making noise and resonating through the air inlet the valve needs to be replaced there is also a revised hose to the valve to reduce noise if it hasn't already been replaced

SOURCE: Engine makes a loud humming noise-Ford Mustang GT 2000

Need to check for any loose belts first .

SOURCE: Intake manifold cracked and leacking coolant (External)

You can clean the area really good with degreaser and apply JB Weld but that is only a temporary fix it will leak again