Yesterday, the engine warning light went on my 2000 Taurus. I checked oil level and coolant level. They are OK. There are no leaks or smoke. Car has 180,000 miles. I spent $1,000.00 on this car in last 3 months on suspension and tires. Car is only worth $1,000.00, so I don't want to spend any more money. Do you have any ideas why light is on? I am guessing a loose wire or short circuit or failed sensor. Any and all help is appreciated. Thanks.