Hi everyone, first time poster here. My car is a 2000 Nissan Sentra 1.8 liter. It has 130,000 miles on it and has been a very reliable car. It has however, started acting strange recently. A few days ago I drove the car to work after it sat for a week. Upon starting the car the first time it immediately killed, I didnt think much about it and simply restarted the car. On my way to work the RPMs dropped and I heard a buzz noise coming out of the passenger side dash, than the O/D light flashed and everything went back to normal. On my way home from work it did this several times and the O/D light even flashed a code like sequence a few times. I figured some kind of sensor was messed up and I would take the car somewhere and try to get the codes read, so I parked the car until I had time to take it in. The car sat for 2 days and this morning I was going to take it in and when I went to start the car it did the same thing it did a few days ago, it died and made a buzz noise, it also made this buzzing from the dash when the RPMs would drop and the O/D light flashed. I restarted the car and it did the same exact thing except now the farker wont start. Anyone have this happen before? Any ideas on what to check/ replace to get the car back running? Thanks in advance for any ideas/ help.