New o2 sensor

[heyhar]

I recently bit the bullet and installed a new O2 sensor in my '92 Cherokee 4.0. Is there anything that I need to do for the PCM to recognize it? There was no "check engine" light on, but after 140k miles and deteriorating MPG's, I figure it's about time. It's hard to tell if it feels any different, as it was running fine, but should I 'reboot' the computer by disconnecting the battery, perform another task, or just be patient and hope it 'discovers' the new addition? Thanks.

[Ed in North Ga.]

shouldnt have to do anything- the reading go`s into the brain- it may take a few hot runs for it to read absolutely correct, but reseting shouldnt be necessary.