I have a 97 Oldsmobile 88, 139,056 miles just changed the oil like 3 days ago and the air filter but that's besides the point... The fuel pump is making a high pitched whine sound but only when I've been driving awhile constantly is it bad or about to go bad or something... Also when Im idling the car starts to run hot and when I pull off it goes down to normal I was wondering what those issues could be.