2000 Regal temp sensor prob.

On my mom's 2000 regal, the tempature sensor (both inside and out) is off by about 100 degrees, eg. it was 35 yesterday, and the outside tempature read 145. I have already changed the fuse, and it didn't fix it. Any help is appreciated.

thanks
Ryan

Change the outside temp sensor that is mounted on the rad support, then drive the car on the highway for 8 miles till the system relearns itself.