Strange temperature problem (2000 Lincoln LS V8)
I have a 2001 Lincoln LS V8 and haven't driven it in a couple days. I drove it today for about 5 minutes to a drive through and all of a sudden, it says "check engine temperature" in the display. I look at the temp gauge and it's 3 quarters of the way up. I'm stuck in the drive through for about another 3 minutes and it shoots up again very rapidly and I get another alert saying "engine power reduced". Now, I'm like "shit!", I need to get out of this drive through and a couple minutes later, I finally get my food and parked it immediately. I pop the hood and there's no smoke whatsoever, look underneath and nothing is leaking. I sit there for a half hour eating and waiting. I start it up and the temperature is normal but the check engine light is on. I cautiously drive it for the 10 minute ride home. The whole way home, the temperature never rose past the middle of hot and cold, it stayed in the middle the whole time and the car seemed to run fine (other than the check engine light). What could this be? ...maybe a bad temp sensor?
what should I check first?
Thanks in advance
1995 Toyota Supra twin turbo
2000 Lincoln LS V8