Great info. I will check my obd, and look it over. I did yesterday but it was hot. So I didn't reach in to much. I also plan to check the o2 sensor today.Check the fuel trims on banks 1 and 2 after the engine is at operating temp. They should be about +/- 10% or less. If the fuel trims are pegged high + you have a vacuum leak and the PCM can’t add enough fuel to compensate for the leak. A vacuum leak means any air entering the engine downstream of the MAF so check the intake hose for a leak. Since you mentioned an evap system failure, double check to make sure you reconnected any vacuum hoses disconnected, especially the vacuum hose to the evap purge valve. Sensor 1 is used by the PCM to regulate the air/ fuel ratio. Sensor 2 is used to monitor the catalytic converter performance. If the fuel trims are normal then most likely there’s a faulty sensor 2 or wiring problem in the circuit.
I will eat my spinach and muscle up. Does the plug hook up to the same spot that the bank 2 sensor 1 does? Right next to the pcv?The takeaway is that both banks are in closed loop control via the upstream sensors , and therefore the pegged lean Bank 2 Senor 2 is likely an issue directly with that sensor; wiring, connector, contamination, bad exhaust gasket letting air into exhaust pipe.
If you have dielectric grease, consider putting some on the electrical contacts.So I pulled it all apart, both side of the plugs and boy were they gooped. I either made it better or made it worst. It's all clean now, but in pulling both apart, I hope I didn't fowl the other sensor.
I left the plugs unconnected to dry out until tomorrow. I used degreaser first on the wires, and the maf cleaner inside. All looks clean. Hope for the best. I guess I could have spilled the atfluid in other bad areas, but maybe this is an argument for fill port over dipstick. Either way, I would have made the same mistake with the funnel.
At this point I know the o2 sensor isn't working. My clean up didn't work. In rerunning my scanner I found p0157, I think, which shows the low voltage on the 2 2 o2. Either way, I think the first step is a new sensor, and I will chase it down from there. I also ordered the ac actuator and a new pcv. Next would be the evap if the check cap comes back. I am sure there will be nothing from there.My guess goes to valves adjusted too tight.