Air fuel sensor, upstream passenger side. Bolt torques.

I got CEL 0031 and learned that it was the upstream, passenger side. I did a pre-order check to ensure that I could easily remove the flange bolts and electronic connector. It was a success, except that the exhaust stud came out along with the bolt. I am ordering new bolts and 1 stud. I am also ordering the Air Fuel Sensor from rockauto, since it was the correct OEM Denso product (V6, automatic, upstream) at the best price.

I cleaned the AF Sensor to see if that would clear the CEL. It did for about a minute, so I am pretty sure that the sensor is bad. 2004 Tacoma V6, automatic.

Does anyone know the tightening torques for the exhaust stud and bolt?

Thanks.

 

Depends just what studs and nuts you get.

The higher strength materials will allow a higher torque . Like ARB studs and nuts

You should be fine at 22 foot pounds.

 

I replaced the O2 sensor, cap nuts and the one stud that originally came loose. I cleared the CEL and it has not come back.

 

Glad you were able to get things repaired!