95 Bonneville multi problems: oil, overheating, hesitating
I have a 95' Bonneville SLE. It'* been an excellent car for the past 4 years, however, recently many problems all seem to be arising at the same time.
I can't sit at a red light for long because the oil pressure drops dangerously low, but if I put the car in park, it'* ok for a bit longer. However, if I sit in park for too long, the temperature rises to a nearly dangerous level according to the gauges. My car has not actually started overheating, but it'* not good. On top of this, I have severe hesitation and it actually kinda make a "put put" noise when I have to slow down or stop. These are the problems that are worrying me, however, my thermostat also claims that it'* 193 degrees Fahrenheit and the heat won't work.
I also would like to say that my dad recently changed all the liquid in the car (antifreeze and oil). I also have a brake fluid leak, so that'* constantly updated too. I know this is a lot of information, but if anybody has anything, I would greatly appreciate it.