Alright guys, I have a big problem. So I was out of town for about a month and my brother was house/car sitting. When I got home yesterday my brother told me there was a problem with my mustang. He said that about a week ago the oil pressure gauge started to go up and down. There would be no pressure for a little bit while driving then it would go back up and then go back down and finally after driving for a little while it would read normal. Today I went out to start it up it wouldn’t start. I tried to start it about 4 times then finally it started. I drove it down the road to see what it was doing and sure enough no pressure then it would go up then read no pressure then go back up again. On the way back to my house the car started to cut out. It died out then tried a couple times to start got it close to home then started to cut out again. What could be the problem??? Oil pump, Vacuum lines??? It is a 1992 2.3l Lx any help would be great.