For the past few months I've been driving my girlfriend's 2000 Sephia to school and back everyday (900+ miles/week). In early February the CEL came on, so I had it scanned. The scan indicated the coolant temperature sensor and apparently it does absolutely nothing because I just said "If it blows up....oops!". 10,000 miles later, nada? I've tried to reset the computer by unhooking the battery but that only clears the CEL code for a few hours, that damn CEL is annoying as HELL. I've also tried to get the coolant temperature sensor, but no one has it in stock, nor can they get it. What gives? Anyhow if any of you can help let me know, this car is really starting to piss me off. Thanks.