91 O2 sensor quick Q.

[ballinjefe22]

91 3.0 5spd. My exhaust guy told me that he has a template for headers that he made for one of these a while back, but doesnt really remember how he set it all up. He told me to ask around and see if anyone knew about the O2 location...the headers he can make dont do the crossover, and just wanted to make sure that the o2 can be set on just one bank/pipe or if it has to be crossed over farther down the system, and lengthen the harness for the sensor. thanks in advance

 

[KLF]

Pretty sure it's just forward of the cat, below the driver. Maybe crawl under and take a look?

 

[WristPin]

Since the Ecu does not use adaptive fuel trim for opposite banks, there is only one O2 sensor. It is an engine management sensor, so it will always be uptream of the catalyst and does not matter what bank it reads from

 

[ballinjefe22]

yeah, i know where it is currently and had to replace it about a month ago when i got the truck...just wanted to make sure it didnt need readings from both banks, so we dont need to make it cross over somewhere down there. bein new to the toyota thing, i just wanted to check. first post was a success. thanks guys