4.0 problems!

[midtnranger]

I have a 93 Ranger, just this morning after getting up to 55mph, she started hesitating and sputtering, check engine light came on. I get her home noticed a loose O2 sensor and plug. Fixed both of them, ran fine at 1st but then started doing it all over again. She is idling really rough. Any ideas?

 

[adsm08]

unhook the battery for 15 minutes and try again.

 

[midtnranger]

Thanks, she is running a lot better now, but check engine light still comes on. I am getting code 137. I am worried that the O2 sensor that was loose got damaged. I took her wheeling the day before and cleaned it up. Could I have got some water in the sensor and damaged it?