Got to run the car today with the chrome box. No change, car ran fine for 45 minutes then it will stall if it stays at idle for any extended period. My driveway is a bit of a hill and in order to back it in today after the 45 minutes I had to hold the gas and the brake in order to keep it from stalling out. Coil next I guess??? Not really sure how to put in the fuel line pressure gauge on my own.

Here is what the temp gauge said when it started acting up.