I've had two radiator hoses burst on me in the last three weeks. I don't know if my water pump is going bad and over pressurizing or what. The first time it was the upper radiator hose and I was just going about 60mph down the highway, not accelerating or anything. The second time it was the lower hose and I was just driving through a parking lot. It has been about 110 degrees here but that shouldn't make them blow like this. Any help? Thanks in advance...