Replace both upper O2 sensors anyway, reset the computer, and start over with any new codes that then occur.

"Testing the O2 sensors" may or may not be a valid step depending on what they actually did. Who knows? I do know that removing them and testing them with a torch is, at best, inconclusive unless they are completely dead.

With both upper sensors new, you will likely then discover vacuum leaks and a possibility of defective post-cat O2 sensor(s) problem(s).

Steve

98 Contour SE Sport 2.5 Duratec ATX The wifey's car 89 Taurus SHO - 246K miles 94 SHO ATX - 190K 1997 F-150 5.4L ATX - The Workhorse 150K. ANY THREAD WITH "OMG" or "WTF" ETC IN THE TITLE WILL BE IGNORED!