Is there something I can run thru the fuel system to clean the O2 sensors?

 

Other than takin a soft wire brush to 'em?

Try a can of Seafoam. $10 or less anywhere.

 

KdF, I was thinking the same thing. So I bought 2 cans, 1that sprays and the other for the tank.
No good deed goes unpunished. I was trying to change the oil in a Procharger and wiped off 1 impler blade in a contamination check. Must have dislodged enough to contaminate 1 sensor on each bank.