Fuel trim data at idle/coast positive LTFT.

Hello,

currently trying to figure out the AFR inbalance issue on a 2016 Tacoma v6. It seems to only be an issue at idle or coast.
With my scanner hooked up, The fuel trim data is showing positive +20% fuel trims for both LTFT on both banks. Once again it will Only do this at idle and when coasting at any speed with the foot off the gas. I’m pretty sure it’s either the TPS or the MAF.
I cleaned the MAF and checked the intake. All the hoses and clamps were tight. After hooking everything up again the STFT for both banks went -7% while the LtFt were still around +20%. Did a battery reset and took it for a drive and now the LTFT for bank 1 is +10.5% and bank 2 +16.4%.
When pressing gas pedal all the fuel trims go back close to zero with sometimes showing -18% STFT and +18% LTFt for a split second.
Seems to me something with this sensor is causing it to send the wrong Fuel trim data to the ECM.
Cleaning made the fuel trims better so it must be the sensor.

 

check MAF performance based on this (without light, air, ac, etc)

 

It’s reporting 0.302 lb/min which is converted to 2.3 g/s at 606rpm. Seems like it’s underreporting then. 9.2g/s at 2000rpm which is fine. And 15.12g/s at 3000rpm.

 

Appreciate the help!

 

It was the MAF sensor. Replaced a while back. Posting for the update.
Smoothed out the takeoff also.