Couple weeks ago low coolant light came on, unscrewed the cap and the cap was very hard to get off and the portion that goes down inside reservoir broke away from cap and had to pull out with pliers. I added coolant and put the piece that broke and cap back on right as I could and figured I should look into new cap at some point. Fast forward to last couple days and coolant low keeps coming on and coolant is coming out from somewhere which I believe is the overflow hose. Could a bad cap cause these issues? I have one ordered and should be here by Friday. I don't believe there are any cracks in the seams of reservoir. So cap or possibly the sensor that attaches to bottom maybe? Any input would be appreciated. There is definitely coolant coming out so it's not a bad or corroded sensor that I am reading about.