1997 Ford Taurus GL mileage: 121,000. The check engine light came on and a local mechanic told me it was a faulty crank sensor. I bought the part and sure enough, my old sensor was broken inside. After cleaning out the broken pieces, I put in a new sensor. However, the check engine light is still on. I gather from reading your site that I may need to have the computer rescanned and/or cleared. Is this so? Is there a reset button I can push? Or do I need someone with a device to clear the computer?