This was an ok running 2006 ranger 4 cyl auto tranny salvage truck. After I bought it, drove it to and had it checked at the BMV I put about 200 miles on the trip and parked it for a couple days. It did not want to start back up after a week, so I shot some starter fluid in the air filter and it started. I let it warm up for about 5 minutes it ran rough but ran. It has been two more days and I go to start it it acts like it is out of gas, so I shoot some starter fluid and it starts, runs rough and dies and the temp gauge light flashes and the temp gauge goes all the way to hot and back to cold back and forth. I was told the temp sensor or thermostat has gone bad, and I have an overheat condition reading preventing the truck from starting. Has anyone had an issue like this? Where is the temp sensor? Where is the thermostat. any thoughts?