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I made a small amount of progress this morning, I pulled the upstream bank 2 sensor and put in one I got from a salvage yard for testing purposes, the key on engine off voltage now showed 0.0 like the other 3 sensors. I started it up and now at idle the fuel trim on bank 2 is showing 10.4% - 19%...

The O2 sensors are connected correctly made sure to check that because that was also something I thought of, as far as the valves I thought of that also since the original reason for replacing the timing kit was the guide breaking on the drive home and it jumped time so I took the heads off sent...

Yes I was able to get the new exhaust system all back into the factory aligned position and held by the hangers and insulators like it was from the factory The bank 1 sensor will show switching from 0.2 to 0.4 to 0.6 steady switching doesn't seem fast at all the bank 2 sensor on the other hand...

It's interesting you say that, last night I was doing some more digging and for the first time I noticed that the bank 2 upstream sensor shows a constant 0.1 volts with key on engine off while all the other 3 show 0.0 then once I start the motor that sensor switches faster than the other...

I have a 2005 Ford Ranger XLT 4.0L automatic, recently replaced timing and head gaskets due to the timing guide breaking on bank 1 on the drive home. I used a Cloyes timing kit replaced all gears guides chains and tensioners, I used the proper tool to hold the cam in place to time the motor and...