When the brake pedal is depressed it does not return to the original position without pulling up with your foot which could cause major problems. This usually only happens when it is warm out though so it is a little weird. And it seems like most mechanics are equally as unsure as to what it is so I constantly am asked to give out large amounts of money that "may" fix the problem.

Anyone know what this issue is and can help? I have had brake lines flushed and from my research it sounds like it could be a failing master cylinder? But most mechanics don't think that. It would just be nice to be able to drive somewhere in the summer and do things without having to worry if my brakes are just going to suddenly not work.