So, there are no current faults at all? If so, then do a tune up, at least replace the spark plugs and the air filter. I can't see any real live data on your scan tool, so I have no way of knowing how it's really running. There are some better apps to try with that Bluetooth ELM 327. Some App that will show live data of the engine running. Torque is not a very good app, having an app that can provide live data such as, Long and Short Fuel Trim, Oxygen sensor data, Mass Air Flow sensor, etc. Would help to see the overall health of the vehicle. Maybe try MotorData OBD ELM car scanner. It provides a lot of really good live data. I've actually used that in the past.
I wouldn't spray anything into the Purge valve, it might fail if you do that.
In a shop we would do a lot more testing with equipment you don't have, to test for leaks and monitor components with higher-end scan tools. Thats why without a lot of data, and no codes right now, it's hard to tell you exactly what is going on with the vehicle. Everything is computer controlled, you can check the purge valve and make sure it's not stuck open, but don't spray any chemicals into it.
Toyota's are good vehicles, I'd say the best on the market, The vehicle was running rich for a while so that's why I would check the spark plugs for carbon build up.
Monday, June 13th, 2022 AT 2:18 PM