Well the other day the check engine light came on when my wife was driving. Its a 96 Explorer 2 wheel drive with a V-6. I was in it a few days ago and thought the temperature guage was reading low. I got a code reader and got code "PO125" that reads that the coolant temperature was too low for the closed fuel loop, or something close to that. I thought it must be a thermastat was stuck open or maybe the fan clutch isn't disengaging. I'll be looking at those things tonight. Have you dealt with this situation or have any other ideas? THANKS!!!